feat: add default value support to string, number, and integer schemas#686

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Merged
alexhancock merged 1 commit into from
Feb 26, 2026
Merged

feat: add default value support to string, number, and integer schemas #686

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33 changes: 33 additions & 0 deletions crates/rmcp/src/model/elicitation_schema.rs
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -113,6 +113,10 @@ pub struct StringSchema {
/// String format - limited to: "email", "uri", "date", "date-time"
#[serde(skip_serializing_if = "Option::is_none")]
pub format: Option<StringFormat>,

/// Default value
#[serde(skip_serializing_if = "Option::is_none")]
pub default: Option<String>,
}

impl Default for StringSchema {
Expand All@@ -124,6 +128,7 @@ impl Default for StringSchema {
min_length: None,
max_length: None,
format: None,
default: None,
}
}
}
Expand DownExpand Up@@ -213,6 +218,12 @@ impl StringSchema {
self.format = Some(format);
self
}

/// Set default value
pub fn with_default(mut self, default: impl Into<String>) -> Self {
self.default = Some(default.into());
self
}
}

// =============================================================================
Expand DownExpand Up@@ -246,6 +257,10 @@ pub struct NumberSchema {
/// Maximum value (inclusive)
#[serde(skip_serializing_if = "Option::is_none")]
pub maximum: Option<f64>,

/// Default value
#[serde(skip_serializing_if = "Option::is_none")]
pub default: Option<f64>,
}

impl Default for NumberSchema {
Expand All@@ -256,6 +271,7 @@ impl Default for NumberSchema {
description: None,
minimum: None,
maximum: None,
default: None,
}
}
}
Expand DownExpand Up@@ -307,6 +323,12 @@ impl NumberSchema {
self.description = Some(description.into());
self
}

/// Set default value
pub fn with_default(mut self, default: f64) -> Self {
self.default = Some(default);
self
}
}

// =============================================================================
Expand DownExpand Up@@ -340,6 +362,10 @@ pub struct IntegerSchema {
/// Maximum value (inclusive)
#[serde(skip_serializing_if = "Option::is_none")]
pub maximum: Option<i64>,

/// Default value
#[serde(skip_serializing_if = "Option::is_none")]
pub default: Option<i64>,
}

impl Default for IntegerSchema {
Expand All@@ -350,6 +376,7 @@ impl Default for IntegerSchema {
description: None,
minimum: None,
maximum: None,
default: None,
}
}
}
Expand DownExpand Up@@ -401,6 +428,12 @@ impl IntegerSchema {
self.description = Some(description.into());
self
}

/// Set default value
pub fn with_default(mut self, default: i64) -> Self {
self.default = Some(default);
self
}
}

// =============================================================================
Expand Down
23 changes: 23 additions & 0 deletions crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema.json
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
"description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
"type": "object",
"properties": {
"default": {
"description": "Default value",
"type": [
"integer",
"null"
],
"format": "int64"
},
"description": {
"description": "Human-readable description",
"type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
"description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
"type": "object",
"properties": {
"default": {
"description": "Default value",
"type": [
"number",
"null"
],
"format": "double"
},
"description": {
"description": "Human-readable description",
"type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
"description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
"type": "object",
"properties": {
"default": {
"description": "Default value",
"type": [
"string",
"null"
]
},
"description": {
"description": "Human-readable description",
"type": [
Expand Down
23 changes: 23 additions & 0 deletions crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema_current.json
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
"description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
"type": "object",
"properties": {
"default": {
"description": "Default value",
"type": [
"integer",
"null"
],
"format": "int64"
},
"description": {
"description": "Human-readable description",
"type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
"description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
"type": "object",
"properties": {
"default": {
"description": "Default value",
"type": [
"number",
"null"
],
"format": "double"
},
"description": {
"description": "Human-readable description",
"type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
"description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
"type": "object",
"properties": {
"default": {
"description": "Default value",
"type": [
"string",
"null"
]
},
"description": {
"description": "Human-readable description",
"type": [
Expand Down
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
feat: add default value support to string, number, and integer schemas#686

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to your account

 Merged

alexhancock
merged 1 commit into

from

Feb 26, 2026
 Merged


feat: add default value support to string, number, and integer schemas
#686
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33 changes: 33 additions & 0 deletions
crates/rmcp/src/model/elicitation_schema.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -113,6 +113,10 @@ pub struct StringSchema {
 /// String format - limited to: "email", "uri", "date", "date-time"
 #[serde(skip_serializing_if = "Option::is_none")]
 pub format: Option<StringFormat>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<String>,
}

impl Default for StringSchema {
Expand All@@ -124,6 +128,7 @@ impl Default for StringSchema {
 min_length: None,
 max_length: None,
 format: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -213,6 +218,12 @@ impl StringSchema {
 self.format = Some(format);
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: impl Into<String>) -> Self {
 self.default = Some(default.into());
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -246,6 +257,10 @@ pub struct NumberSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<f64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<f64>,
}

impl Default for NumberSchema {
Expand All@@ -256,6 +271,7 @@ impl Default for NumberSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -307,6 +323,12 @@ impl NumberSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: f64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -340,6 +362,10 @@ pub struct IntegerSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<i64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<i64>,
}

impl Default for IntegerSchema {
Expand All@@ -350,6 +376,7 @@ impl Default for IntegerSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -401,6 +428,12 @@ impl IntegerSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: i64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema_current.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
feat: add default value support to string, number, and integer schemas#686

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 Merged

alexhancock
merged 1 commit into

from

Feb 26, 2026
 Merged


feat: add default value support to string, number, and integer schemas
#686
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33 changes: 33 additions & 0 deletions
crates/rmcp/src/model/elicitation_schema.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -113,6 +113,10 @@ pub struct StringSchema {
 /// String format - limited to: "email", "uri", "date", "date-time"
 #[serde(skip_serializing_if = "Option::is_none")]
 pub format: Option<StringFormat>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<String>,
}

impl Default for StringSchema {
Expand All@@ -124,6 +128,7 @@ impl Default for StringSchema {
 min_length: None,
 max_length: None,
 format: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -213,6 +218,12 @@ impl StringSchema {
 self.format = Some(format);
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: impl Into<String>) -> Self {
 self.default = Some(default.into());
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -246,6 +257,10 @@ pub struct NumberSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<f64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<f64>,
}

impl Default for NumberSchema {
Expand All@@ -256,6 +271,7 @@ impl Default for NumberSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -307,6 +323,12 @@ impl NumberSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: f64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -340,6 +362,10 @@ pub struct IntegerSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<i64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<i64>,
}

impl Default for IntegerSchema {
Expand All@@ -350,6 +376,7 @@ impl Default for IntegerSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -401,6 +428,12 @@ impl IntegerSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: i64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema_current.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
feat: add default value support to string, number, and integer schemas#686

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

 Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
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to your account

 Merged

alexhancock
merged 1 commit into

from

Feb 26, 2026
 Merged


feat: add default value support to string, number, and integer schemas
#686
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33 changes: 33 additions & 0 deletions
crates/rmcp/src/model/elicitation_schema.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -113,6 +113,10 @@ pub struct StringSchema {
 /// String format - limited to: "email", "uri", "date", "date-time"
 #[serde(skip_serializing_if = "Option::is_none")]
 pub format: Option<StringFormat>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<String>,
}

impl Default for StringSchema {
Expand All@@ -124,6 +128,7 @@ impl Default for StringSchema {
 min_length: None,
 max_length: None,
 format: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -213,6 +218,12 @@ impl StringSchema {
 self.format = Some(format);
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: impl Into<String>) -> Self {
 self.default = Some(default.into());
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -246,6 +257,10 @@ pub struct NumberSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<f64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<f64>,
}

impl Default for NumberSchema {
Expand All@@ -256,6 +271,7 @@ impl Default for NumberSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -307,6 +323,12 @@ impl NumberSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: f64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -340,6 +362,10 @@ pub struct IntegerSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<i64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<i64>,
}

impl Default for IntegerSchema {
Expand All@@ -350,6 +376,7 @@ impl Default for IntegerSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -401,6 +428,12 @@ impl IntegerSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: i64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema_current.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
feat: add default value support to string, number, and integer schemas#686

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to your account

 Merged

alexhancock
merged 1 commit into

from

Feb 26, 2026
 Merged


feat: add default value support to string, number, and integer schemas
#686
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33 changes: 33 additions & 0 deletions
crates/rmcp/src/model/elicitation_schema.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -113,6 +113,10 @@ pub struct StringSchema {
 /// String format - limited to: "email", "uri", "date", "date-time"
 #[serde(skip_serializing_if = "Option::is_none")]
 pub format: Option<StringFormat>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<String>,
}

impl Default for StringSchema {
Expand All@@ -124,6 +128,7 @@ impl Default for StringSchema {
 min_length: None,
 max_length: None,
 format: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -213,6 +218,12 @@ impl StringSchema {
 self.format = Some(format);
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: impl Into<String>) -> Self {
 self.default = Some(default.into());
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -246,6 +257,10 @@ pub struct NumberSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<f64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<f64>,
}

impl Default for NumberSchema {
Expand All@@ -256,6 +271,7 @@ impl Default for NumberSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -307,6 +323,12 @@ impl NumberSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: f64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -340,6 +362,10 @@ pub struct IntegerSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<i64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<i64>,
}

impl Default for IntegerSchema {
Expand All@@ -350,6 +376,7 @@ impl Default for IntegerSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -401,6 +428,12 @@ impl IntegerSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: i64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema_current.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
feat: add default value support to string, number, and integer schemas#686

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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Already on GitHub?
Sign in
to your account

 Merged

alexhancock
merged 1 commit into

from

Feb 26, 2026
 Merged


feat: add default value support to string, number, and integer schemas
#686
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33 changes: 33 additions & 0 deletions
crates/rmcp/src/model/elicitation_schema.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -113,6 +113,10 @@ pub struct StringSchema {
 /// String format - limited to: "email", "uri", "date", "date-time"
 #[serde(skip_serializing_if = "Option::is_none")]
 pub format: Option<StringFormat>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<String>,
}

impl Default for StringSchema {
Expand All@@ -124,6 +128,7 @@ impl Default for StringSchema {
 min_length: None,
 max_length: None,
 format: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -213,6 +218,12 @@ impl StringSchema {
 self.format = Some(format);
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: impl Into<String>) -> Self {
 self.default = Some(default.into());
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -246,6 +257,10 @@ pub struct NumberSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<f64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<f64>,
}

impl Default for NumberSchema {
Expand All@@ -256,6 +271,7 @@ impl Default for NumberSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -307,6 +323,12 @@ impl NumberSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: f64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -340,6 +362,10 @@ pub struct IntegerSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<i64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<i64>,
}

impl Default for IntegerSchema {
Expand All@@ -350,6 +376,7 @@ impl Default for IntegerSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -401,6 +428,12 @@ impl IntegerSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: i64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema_current.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
feat: add default value support to string, number, and integer schemas#686

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

alexhancock
merged 1 commit into

from

Feb 26, 2026
 Merged


feat: add default value support to string, number, and integer schemas
#686
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33 changes: 33 additions & 0 deletions
crates/rmcp/src/model/elicitation_schema.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -113,6 +113,10 @@ pub struct StringSchema {
 /// String format - limited to: "email", "uri", "date", "date-time"
 #[serde(skip_serializing_if = "Option::is_none")]
 pub format: Option<StringFormat>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<String>,
}

impl Default for StringSchema {
Expand All@@ -124,6 +128,7 @@ impl Default for StringSchema {
 min_length: None,
 max_length: None,
 format: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -213,6 +218,12 @@ impl StringSchema {
 self.format = Some(format);
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: impl Into<String>) -> Self {
 self.default = Some(default.into());
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -246,6 +257,10 @@ pub struct NumberSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<f64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<f64>,
}

impl Default for NumberSchema {
Expand All@@ -256,6 +271,7 @@ impl Default for NumberSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -307,6 +323,12 @@ impl NumberSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: f64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -340,6 +362,10 @@ pub struct IntegerSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<i64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<i64>,
}

impl Default for IntegerSchema {
Expand All@@ -350,6 +376,7 @@ impl Default for IntegerSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -401,6 +428,12 @@ impl IntegerSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: i64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema_current.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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feat: add default value support to string, number, and integer schemas#686

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 Merged

alexhancock
merged 1 commit into

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Feb 26, 2026
 Merged


feat: add default value support to string, number, and integer schemas
#686
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33 changes: 33 additions & 0 deletions
crates/rmcp/src/model/elicitation_schema.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -113,6 +113,10 @@ pub struct StringSchema {
 /// String format - limited to: "email", "uri", "date", "date-time"
 #[serde(skip_serializing_if = "Option::is_none")]
 pub format: Option<StringFormat>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<String>,
}

impl Default for StringSchema {
Expand All@@ -124,6 +128,7 @@ impl Default for StringSchema {
 min_length: None,
 max_length: None,
 format: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -213,6 +218,12 @@ impl StringSchema {
 self.format = Some(format);
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: impl Into<String>) -> Self {
 self.default = Some(default.into());
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -246,6 +257,10 @@ pub struct NumberSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<f64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<f64>,
}

impl Default for NumberSchema {
Expand All@@ -256,6 +271,7 @@ impl Default for NumberSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -307,6 +323,12 @@ impl NumberSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: f64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand DownExpand Up@@ -340,6 +362,10 @@ pub struct IntegerSchema {
 /// Maximum value (inclusive)
 #[serde(skip_serializing_if = "Option::is_none")]
 pub maximum: Option<i64>,

 /// Default value
 #[serde(skip_serializing_if = "Option::is_none")]
 pub default: Option<i64>,
}

impl Default for IntegerSchema {
Expand All@@ -350,6 +376,7 @@ impl Default for IntegerSchema {
 description: None,
 minimum: None,
 maximum: None,
 default: None,
 }
 }
}
Expand DownExpand Up@@ -401,6 +428,12 @@ impl IntegerSchema {
 self.description = Some(description.into());
 self
 }

 /// Set default value
 pub fn with_default(mut self, default: i64) -> Self {
 self.default = Some(default);
 self
 }
}

// =============================================================================
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down

23 changes: 23 additions & 0 deletions
crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema_current.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1186,6 +1186,14 @@
 "description": "Schema definition for integer properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "integer",
 "null"
 ],
 "format": "int64"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -1763,6 +1771,14 @@
 "description": "Schema definition for number properties (floating-point).\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec.",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "number",
 "null"
 ],
 "format": "double"
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand DownExpand Up@@ -2869,6 +2885,13 @@
 "description": "Schema definition for string properties.\n\nCompliant with MCP 2025-06-18 specification for elicitation schemas.\nSupports only the fields allowed by the MCP spec:\n- format limited to: \"email\", \"uri\", \"date\", \"date-time\"",
 "type": "object",
 "properties": {
 "default": {
 "description": "Default value",
 "type": [
 "string",
 "null"
 ]
 },
 "description": {
 "description": "Human-readable description",
 "type": [
Expand Down