sdk updates for capturing tool calls#9

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Merged
ozudev merged 7 commits into from
Mar 16, 2026
Merged

sdk updates for capturing tool calls #9

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44b8c03
sdk updates for capturing tool calls
ozudev Mar 11, 2026
e78fa55
fixed tests
ozudev Mar 11, 2026
50cfeff
another update for middleware
ozudev Mar 11, 2026
fb01128
more middleware related updates
ozudev Mar 12, 2026
809bd5b
sdk updates
ozudev Mar 12, 2026
953b59b
formatting fixes
ozudev Mar 13, 2026
b1fd3c7
move ToolCall into its own file. remove unused context
slezakattack Mar 13, 2026
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64 changes: 63 additions & 1 deletion README.md
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -26,7 +26,7 @@ async function main() {
const client = new LLPClient('my-agent', process.env.LLP_API_KEY ?? '');

// Define a callback handler for processing messages
client.onMessage(async (msg) => {
client.onMessage(async (_session, msg) => {
// Process the prompt with your agent.
// Replace this with your own processing logic.
const response = msg.prompt;
Expand All@@ -43,6 +43,68 @@ async function main() {
main();
```

## LangChain Tool Call Capture

If your LangChain agent uses tools, the SDK can automatically annotate those
tool calls back to LLP.

```typescript
import { LLPClient } from 'llpsdk';
import { createLLPToolMiddleware } from 'llpsdk/langchain';
import { createAgent, tool } from 'langchain';
import * as z from 'zod';

const weatherTool = tool(
async ({ city }: { city: string }) => `Weather for ${city}: sunny`,
{
name: 'weather',
description: 'Look up the weather for a city',
schema: z.object({ city: z.string() }),
},
);

const client = new LLPClient<ReturnType<typeof createAgent>>('my-agent', process.env.LLP_API_KEY ?? '');

client.onStart((session, presence) => {
if (presence.status === 'available') {
return createAgent({
model,
tools: [weatherTool],
middleware: [createLLPToolMiddleware()],
});
}
});

client.onMessage(async (session, msg) => {
const agent = session.data;
if (!agent) {
throw new Error(`No agent initialized for session ${session.id}`);
}

const result = await agent.invoke(
{
messages: [{ role: 'user', content: msg.prompt }],
},
{
context: {
llpMessage: msg,
llpClient: session,
},
},
);

return msg.reply(String(result.messages.at(-1)?.content ?? ''));
});
```

The middleware requires LLP runtime context with:

- `llpMessage`: the inbound `TextMessage`
- `llpClient`: the session or client object used to send tool-call annotations

`onStart()` can return a typed session value that the SDK stores on `session.data`.
`onPresence()` remains available as a compatibility alias, but `onStart()` is the preferred API.

## Development

```bash
Expand Down
2 changes: 1 addition & 1 deletion examples/simple-agent.ts
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -6,7 +6,7 @@ async function main() {
const client = new LLPClient('simple-agent', process.env.LLP_API_KEY || '');

// Register handlers
client.onMessage(async (msg) => {
client.onMessage(async (_session, msg) => {
// process msg.prompt with your agent
return msg.reply('hello from TypeScript!');
});
Expand Down
Loading
Loading
, '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" + '

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sdk updates for capturing tool calls#9

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 Merged

ozudev
merged 7 commits into

from

Mar 16, 2026
 Merged


sdk updates for capturing tool calls
#9
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44b8c03

sdk updates for capturing tool calls


ozudev Mar 11, 2026
e78fa55

fixed tests


ozudev Mar 11, 2026
50cfeff

another update for middleware


ozudev Mar 11, 2026
fb01128

more middleware related updates


ozudev Mar 12, 2026
809bd5b

sdk updates


ozudev Mar 12, 2026
953b59b

formatting fixes


ozudev Mar 13, 2026
b1fd3c7

move ToolCall into its own file. remove unused context


slezakattack Mar 13, 2026

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64 changes: 63 additions & 1 deletion
README.md

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -26,7 +26,7 @@ async function main() {
	const client = new LLPClient('my-agent', process.env.LLP_API_KEY ?? '');

	// Define a callback handler for processing messages
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // Process the prompt with your agent.
 // Replace this with your own processing logic.
 const response = msg.prompt;
Expand All@@ -43,6 +43,68 @@ async function main() {
main();
```

## LangChain Tool Call Capture

If your LangChain agent uses tools, the SDK can automatically annotate those
tool calls back to LLP.

```typescript
import { LLPClient } from 'llpsdk';
import { createLLPToolMiddleware } from 'llpsdk/langchain';
import { createAgent, tool } from 'langchain';
import * as z from 'zod';

const weatherTool = tool(
	async ({ city }: { city: string }) => `Weather for ${city}: sunny`,
	{
 name: 'weather',
 description: 'Look up the weather for a city',
 schema: z.object({ city: z.string() }),
	},
);

const client = new LLPClient<ReturnType<typeof createAgent>>('my-agent', process.env.LLP_API_KEY ?? '');

client.onStart((session, presence) => {
	if (presence.status === 'available') {
 return createAgent({
 model,
 tools: [weatherTool],
 middleware: [createLLPToolMiddleware()],
 });
	}
});

client.onMessage(async (session, msg) => {
	const agent = session.data;
	if (!agent) {
 throw new Error(`No agent initialized for session ${session.id}`);
	}

	const result = await agent.invoke(
 {
 messages: [{ role: 'user', content: msg.prompt }],
 },
 {
 context: {
 llpMessage: msg,
 llpClient: session,
 },
 },
	);

	return msg.reply(String(result.messages.at(-1)?.content ?? ''));
});
```

The middleware requires LLP runtime context with:

- `llpMessage`: the inbound `TextMessage`
- `llpClient`: the session or client object used to send tool-call annotations

`onStart()` can return a typed session value that the SDK stores on `session.data`.
`onPresence()` remains available as a compatibility alias, but `onStart()` is the preferred API.

## Development

```bash
Expand Down

2 changes: 1 addition & 1 deletion
examples/simple-agent.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,7 +6,7 @@ async function main() {
	const client = new LLPClient('simple-agent', process.env.LLP_API_KEY || '');

	// Register handlers
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // process msg.prompt with your agent
 return msg.reply('hello from TypeScript!');
	});
Expand Down
Loading
Loading

, '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
sdk updates for capturing tool calls#9

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

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to your account

 Merged

ozudev
merged 7 commits into

from

Mar 16, 2026
 Merged


sdk updates for capturing tool calls
#9
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44b8c03

sdk updates for capturing tool calls


ozudev Mar 11, 2026
e78fa55

fixed tests


ozudev Mar 11, 2026
50cfeff

another update for middleware


ozudev Mar 11, 2026
fb01128

more middleware related updates


ozudev Mar 12, 2026
809bd5b

sdk updates


ozudev Mar 12, 2026
953b59b

formatting fixes


ozudev Mar 13, 2026
b1fd3c7

move ToolCall into its own file. remove unused context


slezakattack Mar 13, 2026

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64 changes: 63 additions & 1 deletion
README.md

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -26,7 +26,7 @@ async function main() {
	const client = new LLPClient('my-agent', process.env.LLP_API_KEY ?? '');

	// Define a callback handler for processing messages
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // Process the prompt with your agent.
 // Replace this with your own processing logic.
 const response = msg.prompt;
Expand All@@ -43,6 +43,68 @@ async function main() {
main();
```

## LangChain Tool Call Capture

If your LangChain agent uses tools, the SDK can automatically annotate those
tool calls back to LLP.

```typescript
import { LLPClient } from 'llpsdk';
import { createLLPToolMiddleware } from 'llpsdk/langchain';
import { createAgent, tool } from 'langchain';
import * as z from 'zod';

const weatherTool = tool(
	async ({ city }: { city: string }) => `Weather for ${city}: sunny`,
	{
 name: 'weather',
 description: 'Look up the weather for a city',
 schema: z.object({ city: z.string() }),
	},
);

const client = new LLPClient<ReturnType<typeof createAgent>>('my-agent', process.env.LLP_API_KEY ?? '');

client.onStart((session, presence) => {
	if (presence.status === 'available') {
 return createAgent({
 model,
 tools: [weatherTool],
 middleware: [createLLPToolMiddleware()],
 });
	}
});

client.onMessage(async (session, msg) => {
	const agent = session.data;
	if (!agent) {
 throw new Error(`No agent initialized for session ${session.id}`);
	}

	const result = await agent.invoke(
 {
 messages: [{ role: 'user', content: msg.prompt }],
 },
 {
 context: {
 llpMessage: msg,
 llpClient: session,
 },
 },
	);

	return msg.reply(String(result.messages.at(-1)?.content ?? ''));
});
```

The middleware requires LLP runtime context with:

- `llpMessage`: the inbound `TextMessage`
- `llpClient`: the session or client object used to send tool-call annotations

`onStart()` can return a typed session value that the SDK stores on `session.data`.
`onPresence()` remains available as a compatibility alias, but `onStart()` is the preferred API.

## Development

```bash
Expand Down

2 changes: 1 addition & 1 deletion
examples/simple-agent.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,7 +6,7 @@ async function main() {
	const client = new LLPClient('simple-agent', process.env.LLP_API_KEY || '');

	// Register handlers
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // process msg.prompt with your agent
 return msg.reply('hello from TypeScript!');
	});
Expand Down
Loading
Loading

, '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
sdk updates for capturing tool calls#9

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 Merged

ozudev
merged 7 commits into

from

Mar 16, 2026
 Merged


sdk updates for capturing tool calls
#9
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7 commits


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44b8c03

sdk updates for capturing tool calls


ozudev Mar 11, 2026
e78fa55

fixed tests


ozudev Mar 11, 2026
50cfeff

another update for middleware


ozudev Mar 11, 2026
fb01128

more middleware related updates


ozudev Mar 12, 2026
809bd5b

sdk updates


ozudev Mar 12, 2026
953b59b

formatting fixes


ozudev Mar 13, 2026
b1fd3c7

move ToolCall into its own file. remove unused context


slezakattack Mar 13, 2026

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64 changes: 63 additions & 1 deletion
README.md

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -26,7 +26,7 @@ async function main() {
	const client = new LLPClient('my-agent', process.env.LLP_API_KEY ?? '');

	// Define a callback handler for processing messages
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // Process the prompt with your agent.
 // Replace this with your own processing logic.
 const response = msg.prompt;
Expand All@@ -43,6 +43,68 @@ async function main() {
main();
```

## LangChain Tool Call Capture

If your LangChain agent uses tools, the SDK can automatically annotate those
tool calls back to LLP.

```typescript
import { LLPClient } from 'llpsdk';
import { createLLPToolMiddleware } from 'llpsdk/langchain';
import { createAgent, tool } from 'langchain';
import * as z from 'zod';

const weatherTool = tool(
	async ({ city }: { city: string }) => `Weather for ${city}: sunny`,
	{
 name: 'weather',
 description: 'Look up the weather for a city',
 schema: z.object({ city: z.string() }),
	},
);

const client = new LLPClient<ReturnType<typeof createAgent>>('my-agent', process.env.LLP_API_KEY ?? '');

client.onStart((session, presence) => {
	if (presence.status === 'available') {
 return createAgent({
 model,
 tools: [weatherTool],
 middleware: [createLLPToolMiddleware()],
 });
	}
});

client.onMessage(async (session, msg) => {
	const agent = session.data;
	if (!agent) {
 throw new Error(`No agent initialized for session ${session.id}`);
	}

	const result = await agent.invoke(
 {
 messages: [{ role: 'user', content: msg.prompt }],
 },
 {
 context: {
 llpMessage: msg,
 llpClient: session,
 },
 },
	);

	return msg.reply(String(result.messages.at(-1)?.content ?? ''));
});
```

The middleware requires LLP runtime context with:

- `llpMessage`: the inbound `TextMessage`
- `llpClient`: the session or client object used to send tool-call annotations

`onStart()` can return a typed session value that the SDK stores on `session.data`.
`onPresence()` remains available as a compatibility alias, but `onStart()` is the preferred API.

## Development

```bash
Expand Down

2 changes: 1 addition & 1 deletion
examples/simple-agent.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,7 +6,7 @@ async function main() {
	const client = new LLPClient('simple-agent', process.env.LLP_API_KEY || '');

	// Register handlers
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // process msg.prompt with your agent
 return msg.reply('hello from TypeScript!');
	});
Expand Down
Loading
Loading

, '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
sdk updates for capturing tool calls#9

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?
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to your account

 Merged

ozudev
merged 7 commits into

from

Mar 16, 2026
 Merged


sdk updates for capturing tool calls
#9
Show file tree
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Commits

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7 commits


Select commit
Hold shift + click to select a range
44b8c03

sdk updates for capturing tool calls


ozudev Mar 11, 2026
e78fa55

fixed tests


ozudev Mar 11, 2026
50cfeff

another update for middleware


ozudev Mar 11, 2026
fb01128

more middleware related updates


ozudev Mar 12, 2026
809bd5b

sdk updates


ozudev Mar 12, 2026
953b59b

formatting fixes


ozudev Mar 13, 2026
b1fd3c7

move ToolCall into its own file. remove unused context


slezakattack Mar 13, 2026

File filter

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64 changes: 63 additions & 1 deletion
README.md

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -26,7 +26,7 @@ async function main() {
	const client = new LLPClient('my-agent', process.env.LLP_API_KEY ?? '');

	// Define a callback handler for processing messages
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // Process the prompt with your agent.
 // Replace this with your own processing logic.
 const response = msg.prompt;
Expand All@@ -43,6 +43,68 @@ async function main() {
main();
```

## LangChain Tool Call Capture

If your LangChain agent uses tools, the SDK can automatically annotate those
tool calls back to LLP.

```typescript
import { LLPClient } from 'llpsdk';
import { createLLPToolMiddleware } from 'llpsdk/langchain';
import { createAgent, tool } from 'langchain';
import * as z from 'zod';

const weatherTool = tool(
	async ({ city }: { city: string }) => `Weather for ${city}: sunny`,
	{
 name: 'weather',
 description: 'Look up the weather for a city',
 schema: z.object({ city: z.string() }),
	},
);

const client = new LLPClient<ReturnType<typeof createAgent>>('my-agent', process.env.LLP_API_KEY ?? '');

client.onStart((session, presence) => {
	if (presence.status === 'available') {
 return createAgent({
 model,
 tools: [weatherTool],
 middleware: [createLLPToolMiddleware()],
 });
	}
});

client.onMessage(async (session, msg) => {
	const agent = session.data;
	if (!agent) {
 throw new Error(`No agent initialized for session ${session.id}`);
	}

	const result = await agent.invoke(
 {
 messages: [{ role: 'user', content: msg.prompt }],
 },
 {
 context: {
 llpMessage: msg,
 llpClient: session,
 },
 },
	);

	return msg.reply(String(result.messages.at(-1)?.content ?? ''));
});
```

The middleware requires LLP runtime context with:

- `llpMessage`: the inbound `TextMessage`
- `llpClient`: the session or client object used to send tool-call annotations

`onStart()` can return a typed session value that the SDK stores on `session.data`.
`onPresence()` remains available as a compatibility alias, but `onStart()` is the preferred API.

## Development

```bash
Expand Down

2 changes: 1 addition & 1 deletion
examples/simple-agent.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,7 +6,7 @@ async function main() {
	const client = new LLPClient('simple-agent', process.env.LLP_API_KEY || '');

	// Register handlers
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // process msg.prompt with your agent
 return msg.reply('hello from TypeScript!');
	});
Expand Down
Loading
Loading

, '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('^' + ".*" + '

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sdk updates for capturing tool calls#9

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 Merged

ozudev
merged 7 commits into

from

Mar 16, 2026
 Merged


sdk updates for capturing tool calls
#9
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44b8c03

sdk updates for capturing tool calls


ozudev Mar 11, 2026
e78fa55

fixed tests


ozudev Mar 11, 2026
50cfeff

another update for middleware


ozudev Mar 11, 2026
fb01128

more middleware related updates


ozudev Mar 12, 2026
809bd5b

sdk updates


ozudev Mar 12, 2026
953b59b

formatting fixes


ozudev Mar 13, 2026
b1fd3c7

move ToolCall into its own file. remove unused context


slezakattack Mar 13, 2026

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64 changes: 63 additions & 1 deletion
README.md

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -26,7 +26,7 @@ async function main() {
	const client = new LLPClient('my-agent', process.env.LLP_API_KEY ?? '');

	// Define a callback handler for processing messages
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // Process the prompt with your agent.
 // Replace this with your own processing logic.
 const response = msg.prompt;
Expand All@@ -43,6 +43,68 @@ async function main() {
main();
```

## LangChain Tool Call Capture

If your LangChain agent uses tools, the SDK can automatically annotate those
tool calls back to LLP.

```typescript
import { LLPClient } from 'llpsdk';
import { createLLPToolMiddleware } from 'llpsdk/langchain';
import { createAgent, tool } from 'langchain';
import * as z from 'zod';

const weatherTool = tool(
	async ({ city }: { city: string }) => `Weather for ${city}: sunny`,
	{
 name: 'weather',
 description: 'Look up the weather for a city',
 schema: z.object({ city: z.string() }),
	},
);

const client = new LLPClient<ReturnType<typeof createAgent>>('my-agent', process.env.LLP_API_KEY ?? '');

client.onStart((session, presence) => {
	if (presence.status === 'available') {
 return createAgent({
 model,
 tools: [weatherTool],
 middleware: [createLLPToolMiddleware()],
 });
	}
});

client.onMessage(async (session, msg) => {
	const agent = session.data;
	if (!agent) {
 throw new Error(`No agent initialized for session ${session.id}`);
	}

	const result = await agent.invoke(
 {
 messages: [{ role: 'user', content: msg.prompt }],
 },
 {
 context: {
 llpMessage: msg,
 llpClient: session,
 },
 },
	);

	return msg.reply(String(result.messages.at(-1)?.content ?? ''));
});
```

The middleware requires LLP runtime context with:

- `llpMessage`: the inbound `TextMessage`
- `llpClient`: the session or client object used to send tool-call annotations

`onStart()` can return a typed session value that the SDK stores on `session.data`.
`onPresence()` remains available as a compatibility alias, but `onStart()` is the preferred API.

## Development

```bash
Expand Down

2 changes: 1 addition & 1 deletion
examples/simple-agent.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,7 +6,7 @@ async function main() {
	const client = new LLPClient('simple-agent', process.env.LLP_API_KEY || '');

	// Register handlers
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // process msg.prompt with your agent
 return msg.reply('hello from TypeScript!');
	});
Expand Down
Loading
Loading

, '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
sdk updates for capturing tool calls#9

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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.

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to your account

 Merged

ozudev
merged 7 commits into

from

Mar 16, 2026
 Merged


sdk updates for capturing tool calls
#9
Show file tree
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7 commits


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44b8c03

sdk updates for capturing tool calls


ozudev Mar 11, 2026
e78fa55

fixed tests


ozudev Mar 11, 2026
50cfeff

another update for middleware


ozudev Mar 11, 2026
fb01128

more middleware related updates


ozudev Mar 12, 2026
809bd5b

sdk updates


ozudev Mar 12, 2026
953b59b

formatting fixes


ozudev Mar 13, 2026
b1fd3c7

move ToolCall into its own file. remove unused context


slezakattack Mar 13, 2026

File filter

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Conversations

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64 changes: 63 additions & 1 deletion
README.md

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -26,7 +26,7 @@ async function main() {
	const client = new LLPClient('my-agent', process.env.LLP_API_KEY ?? '');

	// Define a callback handler for processing messages
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // Process the prompt with your agent.
 // Replace this with your own processing logic.
 const response = msg.prompt;
Expand All@@ -43,6 +43,68 @@ async function main() {
main();
```

## LangChain Tool Call Capture

If your LangChain agent uses tools, the SDK can automatically annotate those
tool calls back to LLP.

```typescript
import { LLPClient } from 'llpsdk';
import { createLLPToolMiddleware } from 'llpsdk/langchain';
import { createAgent, tool } from 'langchain';
import * as z from 'zod';

const weatherTool = tool(
	async ({ city }: { city: string }) => `Weather for ${city}: sunny`,
	{
 name: 'weather',
 description: 'Look up the weather for a city',
 schema: z.object({ city: z.string() }),
	},
);

const client = new LLPClient<ReturnType<typeof createAgent>>('my-agent', process.env.LLP_API_KEY ?? '');

client.onStart((session, presence) => {
	if (presence.status === 'available') {
 return createAgent({
 model,
 tools: [weatherTool],
 middleware: [createLLPToolMiddleware()],
 });
	}
});

client.onMessage(async (session, msg) => {
	const agent = session.data;
	if (!agent) {
 throw new Error(`No agent initialized for session ${session.id}`);
	}

	const result = await agent.invoke(
 {
 messages: [{ role: 'user', content: msg.prompt }],
 },
 {
 context: {
 llpMessage: msg,
 llpClient: session,
 },
 },
	);

	return msg.reply(String(result.messages.at(-1)?.content ?? ''));
});
```

The middleware requires LLP runtime context with:

- `llpMessage`: the inbound `TextMessage`
- `llpClient`: the session or client object used to send tool-call annotations

`onStart()` can return a typed session value that the SDK stores on `session.data`.
`onPresence()` remains available as a compatibility alias, but `onStart()` is the preferred API.

## Development

```bash
Expand Down

2 changes: 1 addition & 1 deletion
examples/simple-agent.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,7 +6,7 @@ async function main() {
	const client = new LLPClient('simple-agent', process.env.LLP_API_KEY || '');

	// Register handlers
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // process msg.prompt with your agent
 return msg.reply('hello from TypeScript!');
	});
Expand Down
Loading
Loading

, '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); }
})();
})();

Skip to content
sdk updates for capturing tool calls#9

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.

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 Merged

ozudev
merged 7 commits into

from

Mar 16, 2026
 Merged


sdk updates for capturing tool calls
#9
Show file tree
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 Changes from all commits
Commits

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7 commits


Select commit
Hold shift + click to select a range
44b8c03

sdk updates for capturing tool calls


ozudev Mar 11, 2026
e78fa55

fixed tests


ozudev Mar 11, 2026
50cfeff

another update for middleware


ozudev Mar 11, 2026
fb01128

more middleware related updates


ozudev Mar 12, 2026
809bd5b

sdk updates


ozudev Mar 12, 2026
953b59b

formatting fixes


ozudev Mar 13, 2026
b1fd3c7

move ToolCall into its own file. remove unused context


slezakattack Mar 13, 2026

File filter

Filter by extension
Filter by extension
Conversations

Failed to load comments. 
Loading
Jump to

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Failed to load files. 
Loading
 Diff view

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64 changes: 63 additions & 1 deletion
README.md

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -26,7 +26,7 @@ async function main() {
	const client = new LLPClient('my-agent', process.env.LLP_API_KEY ?? '');

	// Define a callback handler for processing messages
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // Process the prompt with your agent.
 // Replace this with your own processing logic.
 const response = msg.prompt;
Expand All@@ -43,6 +43,68 @@ async function main() {
main();
```

## LangChain Tool Call Capture

If your LangChain agent uses tools, the SDK can automatically annotate those
tool calls back to LLP.

```typescript
import { LLPClient } from 'llpsdk';
import { createLLPToolMiddleware } from 'llpsdk/langchain';
import { createAgent, tool } from 'langchain';
import * as z from 'zod';

const weatherTool = tool(
	async ({ city }: { city: string }) => `Weather for ${city}: sunny`,
	{
 name: 'weather',
 description: 'Look up the weather for a city',
 schema: z.object({ city: z.string() }),
	},
);

const client = new LLPClient<ReturnType<typeof createAgent>>('my-agent', process.env.LLP_API_KEY ?? '');

client.onStart((session, presence) => {
	if (presence.status === 'available') {
 return createAgent({
 model,
 tools: [weatherTool],
 middleware: [createLLPToolMiddleware()],
 });
	}
});

client.onMessage(async (session, msg) => {
	const agent = session.data;
	if (!agent) {
 throw new Error(`No agent initialized for session ${session.id}`);
	}

	const result = await agent.invoke(
 {
 messages: [{ role: 'user', content: msg.prompt }],
 },
 {
 context: {
 llpMessage: msg,
 llpClient: session,
 },
 },
	);

	return msg.reply(String(result.messages.at(-1)?.content ?? ''));
});
```

The middleware requires LLP runtime context with:

- `llpMessage`: the inbound `TextMessage`
- `llpClient`: the session or client object used to send tool-call annotations

`onStart()` can return a typed session value that the SDK stores on `session.data`.
`onPresence()` remains available as a compatibility alias, but `onStart()` is the preferred API.

## Development

```bash
Expand Down

2 changes: 1 addition & 1 deletion
examples/simple-agent.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,7 +6,7 @@ async function main() {
	const client = new LLPClient('simple-agent', process.env.LLP_API_KEY || '');

	// Register handlers
	client.onMessage(async (msg) => {
	client.onMessage(async (_session, msg) => {
 // process msg.prompt with your agent
 return msg.reply('hello from TypeScript!');
	});
Expand Down
Loading
Loading