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Inherit environment variables deemed safe by default - #36

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jspahrsummers merged 2 commits into
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Nov 5, 2024
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Inherit environment variables deemed safe by default#36
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@jspahrsummersjspahrsummers commented Nov 5, 2024

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Will need to make the same changes in the Python SDK, but let's review this for correctness first.

To do

After merging

Comment threadsrc/client/stdio.ts
* Environment variables to inherit by default, if an environment is not explicitly given.
*/
export const DEFAULT_INHERITED_ENV_VARS =
process.platform === "win32"

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Some of these are unnecessary, I'd nuke:

ALLUSERSPROFILE, NUMBER_OF_PROCESSORS, OS, PATHEXT, TMP, WINDIR

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Will definitely defer to you, but here was my reasoning:

  • NUMBER_OF_PROCESSORS: Maybe needed to set reasonable concurrency defaults (e.g., for thread pools)?
  • OS: Maybe needed for compatibility checks?
  • TMP: Seemed like the same thing as TEMP, maybe applications incorrectly use one or the other

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OS is basically a legacy constant, it's always Windows_NT, and TMP is also like, a legacy env var that shouldn't exist. NUMBER_OF_PROCESSORS you can probably keep but usually people use a platform API like os.cpus().length on node

Comment threadsrc/client/stdio.ts
this._serverParams.env === undefined
? {}
: { ...this._serverParams.env },
env: this._serverParams.env ?? getDefaultEnvironment(),

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Do we want to merge this? something like:

env: { ...this._serverParams.env, ...getDefaultEnvironment()}

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No, because then there's no way to clobber the default environment. Even if we flipped the order, it'd be very annoying to unset the default keys.

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I figure it's easy enough for callers to build their env on getDefaultEnvironment() if they want to.

@jspahrsummers
jspahrsummers merged commit 844d69d into mainNov 5, 2024
@jspahrsummers
jspahrsummers deleted the justin/env-var-inheritance branch November 5, 2024 16:05
felixweinberger added a commit that referenced this pull request Jun 22, 2026
… path
classifyEntryRequest grows a needsForward flag (default true) that gates the
body-preserving request.clone() it tees off for the legacy leg. isLegacyRequest
passes false: it already classifies a clone of the caller's request and never
reads forwardRequest, so the second clone buffered one extra body copy per
routed POST for nothing. The entry handler call site is unchanged (default
true) and the body-readability contract test stays.
Follow-up from the #2316 review (r3435103544); closes#36.
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(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
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;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Inherit environment variables deemed safe by default by jspahrsummers · Pull Request #36 · modelcontextprotocol/typescript-sdk · GitHub
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Inherit environment variables deemed safe by default - #36

Merged
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance
Nov 5, 2024
Merged

Inherit environment variables deemed safe by default#36
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance

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@jspahrsummers

@jspahrsummersjspahrsummers commented Nov 5, 2024

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Will need to make the same changes in the Python SDK, but let's review this for correctness first.

To do

After merging

Comment threadsrc/client/stdio.ts
* Environment variables to inherit by default, if an environment is not explicitly given.
*/
export const DEFAULT_INHERITED_ENV_VARS =
process.platform === "win32"

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Some of these are unnecessary, I'd nuke:

ALLUSERSPROFILE, NUMBER_OF_PROCESSORS, OS, PATHEXT, TMP, WINDIR

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Will definitely defer to you, but here was my reasoning:

  • NUMBER_OF_PROCESSORS: Maybe needed to set reasonable concurrency defaults (e.g., for thread pools)?
  • OS: Maybe needed for compatibility checks?
  • TMP: Seemed like the same thing as TEMP, maybe applications incorrectly use one or the other

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OS is basically a legacy constant, it's always Windows_NT, and TMP is also like, a legacy env var that shouldn't exist. NUMBER_OF_PROCESSORS you can probably keep but usually people use a platform API like os.cpus().length on node

Comment threadsrc/client/stdio.ts
this._serverParams.env === undefined
? {}
: { ...this._serverParams.env },
env: this._serverParams.env ?? getDefaultEnvironment(),

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Do we want to merge this? something like:

env: { ...this._serverParams.env, ...getDefaultEnvironment()}

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No, because then there's no way to clobber the default environment. Even if we flipped the order, it'd be very annoying to unset the default keys.

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I figure it's easy enough for callers to build their env on getDefaultEnvironment() if they want to.

@jspahrsummers
jspahrsummers merged commit 844d69d into mainNov 5, 2024
@jspahrsummers
jspahrsummers deleted the justin/env-var-inheritance branch November 5, 2024 16:05
felixweinberger added a commit that referenced this pull request Jun 22, 2026
… path
classifyEntryRequest grows a needsForward flag (default true) that gates the
body-preserving request.clone() it tees off for the legacy leg. isLegacyRequest
passes false: it already classifies a clone of the caller's request and never
reads forwardRequest, so the second clone buffered one extra body copy per
routed POST for nothing. The entry handler call site is unchanged (default
true) and the body-readability contract test stays.
Follow-up from the #2316 review (r3435103544); closes#36.
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Force GitHub README to respect dark mode (function() { var style = document.createElement('style'); style.textContent = ' .markdown-body { color-scheme: dark light; } .markdown-body pre { background: #161b22 !important; } .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; } .markdown-body table th, .markdown-body table td { border-color: #30363d !important; } .markdown-body img { background: #0d1117; } .markdown-body blockquote { border-left-color: #8b949e; } .markdown-body hr { border-color: #30363d; } '; document.head.appendChild(style); })(); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' Inherit environment variables deemed safe by default by jspahrsummers · Pull Request #36 · modelcontextprotocol/typescript-sdk · GitHub
Skip to content

Inherit environment variables deemed safe by default - #36

Merged
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance
Nov 5, 2024
Merged

Inherit environment variables deemed safe by default#36
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance

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@jspahrsummers

@jspahrsummersjspahrsummers commented Nov 5, 2024

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Will need to make the same changes in the Python SDK, but let's review this for correctness first.

To do

After merging

Comment threadsrc/client/stdio.ts
* Environment variables to inherit by default, if an environment is not explicitly given.
*/
export const DEFAULT_INHERITED_ENV_VARS =
process.platform === "win32"

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Some of these are unnecessary, I'd nuke:

ALLUSERSPROFILE, NUMBER_OF_PROCESSORS, OS, PATHEXT, TMP, WINDIR

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Will definitely defer to you, but here was my reasoning:

  • NUMBER_OF_PROCESSORS: Maybe needed to set reasonable concurrency defaults (e.g., for thread pools)?
  • OS: Maybe needed for compatibility checks?
  • TMP: Seemed like the same thing as TEMP, maybe applications incorrectly use one or the other

Copy link
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Choose a reason for hiding this comment

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OS is basically a legacy constant, it's always Windows_NT, and TMP is also like, a legacy env var that shouldn't exist. NUMBER_OF_PROCESSORS you can probably keep but usually people use a platform API like os.cpus().length on node

Comment threadsrc/client/stdio.ts
this._serverParams.env === undefined
? {}
: { ...this._serverParams.env },
env: this._serverParams.env ?? getDefaultEnvironment(),

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Do we want to merge this? something like:

env: { ...this._serverParams.env, ...getDefaultEnvironment()}

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No, because then there's no way to clobber the default environment. Even if we flipped the order, it'd be very annoying to unset the default keys.

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MemberAuthor

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I figure it's easy enough for callers to build their env on getDefaultEnvironment() if they want to.

@jspahrsummers
jspahrsummers merged commit 844d69d into mainNov 5, 2024
@jspahrsummers
jspahrsummers deleted the justin/env-var-inheritance branch November 5, 2024 16:05
felixweinberger added a commit that referenced this pull request Jun 22, 2026
… path
classifyEntryRequest grows a needsForward flag (default true) that gates the
body-preserving request.clone() it tees off for the legacy leg. isLegacyRequest
passes false: it already classifies a clone of the caller's request and never
reads forwardRequest, so the second clone buffered one extra body copy per
routed POST for nothing. The entry handler call site is unchanged (default
true) and the body-readability contract test stays.
Follow-up from the #2316 review (r3435103544); closes#36.
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Skip to content

Inherit environment variables deemed safe by default - #36

Merged
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance
Nov 5, 2024
Merged

Inherit environment variables deemed safe by default#36
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance

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@jspahrsummers

@jspahrsummersjspahrsummers commented Nov 5, 2024

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Will need to make the same changes in the Python SDK, but let's review this for correctness first.

To do

After merging

Comment threadsrc/client/stdio.ts
* Environment variables to inherit by default, if an environment is not explicitly given.
*/
export const DEFAULT_INHERITED_ENV_VARS =
process.platform === "win32"

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Some of these are unnecessary, I'd nuke:

ALLUSERSPROFILE, NUMBER_OF_PROCESSORS, OS, PATHEXT, TMP, WINDIR

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Will definitely defer to you, but here was my reasoning:

  • NUMBER_OF_PROCESSORS: Maybe needed to set reasonable concurrency defaults (e.g., for thread pools)?
  • OS: Maybe needed for compatibility checks?
  • TMP: Seemed like the same thing as TEMP, maybe applications incorrectly use one or the other

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Choose a reason for hiding this comment

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OS is basically a legacy constant, it's always Windows_NT, and TMP is also like, a legacy env var that shouldn't exist. NUMBER_OF_PROCESSORS you can probably keep but usually people use a platform API like os.cpus().length on node

Comment threadsrc/client/stdio.ts
this._serverParams.env === undefined
? {}
: { ...this._serverParams.env },
env: this._serverParams.env ?? getDefaultEnvironment(),

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Do we want to merge this? something like:

env: { ...this._serverParams.env, ...getDefaultEnvironment()}

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No, because then there's no way to clobber the default environment. Even if we flipped the order, it'd be very annoying to unset the default keys.

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MemberAuthor

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I figure it's easy enough for callers to build their env on getDefaultEnvironment() if they want to.

@jspahrsummers
jspahrsummers merged commit 844d69d into mainNov 5, 2024
@jspahrsummers
jspahrsummers deleted the justin/env-var-inheritance branch November 5, 2024 16:05
felixweinberger added a commit that referenced this pull request Jun 22, 2026
… path
classifyEntryRequest grows a needsForward flag (default true) that gates the
body-preserving request.clone() it tees off for the legacy leg. isLegacyRequest
passes false: it already classifies a clone of the caller's request and never
reads forwardRequest, so the second clone buffered one extra body copy per
routed POST for nothing. The entry handler call site is unchanged (default
true) and the body-readability contract test stays.
Follow-up from the #2316 review (r3435103544); closes#36.
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ' Inherit environment variables deemed safe by default by jspahrsummers · Pull Request #36 · modelcontextprotocol/typescript-sdk · GitHub
Skip to content

Inherit environment variables deemed safe by default - #36

Merged
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance
Nov 5, 2024
Merged

Inherit environment variables deemed safe by default#36
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance

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@jspahrsummers

@jspahrsummersjspahrsummers commented Nov 5, 2024

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Will need to make the same changes in the Python SDK, but let's review this for correctness first.

To do

After merging

Comment threadsrc/client/stdio.ts
* Environment variables to inherit by default, if an environment is not explicitly given.
*/
export const DEFAULT_INHERITED_ENV_VARS =
process.platform === "win32"

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Some of these are unnecessary, I'd nuke:

ALLUSERSPROFILE, NUMBER_OF_PROCESSORS, OS, PATHEXT, TMP, WINDIR

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Will definitely defer to you, but here was my reasoning:

  • NUMBER_OF_PROCESSORS: Maybe needed to set reasonable concurrency defaults (e.g., for thread pools)?
  • OS: Maybe needed for compatibility checks?
  • TMP: Seemed like the same thing as TEMP, maybe applications incorrectly use one or the other

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Choose a reason for hiding this comment

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OS is basically a legacy constant, it's always Windows_NT, and TMP is also like, a legacy env var that shouldn't exist. NUMBER_OF_PROCESSORS you can probably keep but usually people use a platform API like os.cpus().length on node

Comment threadsrc/client/stdio.ts
this._serverParams.env === undefined
? {}
: { ...this._serverParams.env },
env: this._serverParams.env ?? getDefaultEnvironment(),

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Do we want to merge this? something like:

env: { ...this._serverParams.env, ...getDefaultEnvironment()}

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MemberAuthor

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No, because then there's no way to clobber the default environment. Even if we flipped the order, it'd be very annoying to unset the default keys.

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MemberAuthor

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I figure it's easy enough for callers to build their env on getDefaultEnvironment() if they want to.

@jspahrsummers
jspahrsummers merged commit 844d69d into mainNov 5, 2024
@jspahrsummers
jspahrsummers deleted the justin/env-var-inheritance branch November 5, 2024 16:05
felixweinberger added a commit that referenced this pull request Jun 22, 2026
… path
classifyEntryRequest grows a needsForward flag (default true) that gates the
body-preserving request.clone() it tees off for the legacy leg. isLegacyRequest
passes false: it already classifies a clone of the caller's request and never
reads forwardRequest, so the second clone buffered one extra body copy per
routed POST for nothing. The entry handler call site is unchanged (default
true) and the body-readability contract test stays.
Follow-up from the #2316 review (r3435103544); closes#36.
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' Inherit environment variables deemed safe by default by jspahrsummers · Pull Request #36 · modelcontextprotocol/typescript-sdk · GitHub
Skip to content

Inherit environment variables deemed safe by default - #36

Merged
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance
Nov 5, 2024
Merged

Inherit environment variables deemed safe by default#36
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance

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@jspahrsummers

@jspahrsummersjspahrsummers commented Nov 5, 2024

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Will need to make the same changes in the Python SDK, but let's review this for correctness first.

To do

After merging

Comment threadsrc/client/stdio.ts
* Environment variables to inherit by default, if an environment is not explicitly given.
*/
export const DEFAULT_INHERITED_ENV_VARS =
process.platform === "win32"

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Some of these are unnecessary, I'd nuke:

ALLUSERSPROFILE, NUMBER_OF_PROCESSORS, OS, PATHEXT, TMP, WINDIR

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MemberAuthor

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Will definitely defer to you, but here was my reasoning:

  • NUMBER_OF_PROCESSORS: Maybe needed to set reasonable concurrency defaults (e.g., for thread pools)?
  • OS: Maybe needed for compatibility checks?
  • TMP: Seemed like the same thing as TEMP, maybe applications incorrectly use one or the other

Copy link
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Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

OS is basically a legacy constant, it's always Windows_NT, and TMP is also like, a legacy env var that shouldn't exist. NUMBER_OF_PROCESSORS you can probably keep but usually people use a platform API like os.cpus().length on node

Comment threadsrc/client/stdio.ts
this._serverParams.env === undefined
? {}
: { ...this._serverParams.env },
env: this._serverParams.env ?? getDefaultEnvironment(),

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Do we want to merge this? something like:

env: { ...this._serverParams.env, ...getDefaultEnvironment()}

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No, because then there's no way to clobber the default environment. Even if we flipped the order, it'd be very annoying to unset the default keys.

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I figure it's easy enough for callers to build their env on getDefaultEnvironment() if they want to.

@jspahrsummers
jspahrsummers merged commit 844d69d into mainNov 5, 2024
@jspahrsummers
jspahrsummers deleted the justin/env-var-inheritance branch November 5, 2024 16:05
felixweinberger added a commit that referenced this pull request Jun 22, 2026
… path
classifyEntryRequest grows a needsForward flag (default true) that gates the
body-preserving request.clone() it tees off for the legacy leg. isLegacyRequest
passes false: it already classifies a clone of the caller's request and never
reads forwardRequest, so the second clone buffered one extra body copy per
routed POST for nothing. The entry handler call site is unchanged (default
true) and the body-readability contract test stays.
Follow-up from the #2316 review (r3435103544); closes#36.
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' Inherit environment variables deemed safe by default by jspahrsummers · Pull Request #36 · modelcontextprotocol/typescript-sdk · GitHub
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Inherit environment variables deemed safe by default - #36

Merged
jspahrsummers merged 2 commits into
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justin/env-var-inheritance
Nov 5, 2024
Merged

Inherit environment variables deemed safe by default#36
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance

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@jspahrsummers

@jspahrsummersjspahrsummers commented Nov 5, 2024

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Will need to make the same changes in the Python SDK, but let's review this for correctness first.

To do

After merging

Comment threadsrc/client/stdio.ts
* Environment variables to inherit by default, if an environment is not explicitly given.
*/
export const DEFAULT_INHERITED_ENV_VARS =
process.platform === "win32"

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Some of these are unnecessary, I'd nuke:

ALLUSERSPROFILE, NUMBER_OF_PROCESSORS, OS, PATHEXT, TMP, WINDIR

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Will definitely defer to you, but here was my reasoning:

  • NUMBER_OF_PROCESSORS: Maybe needed to set reasonable concurrency defaults (e.g., for thread pools)?
  • OS: Maybe needed for compatibility checks?
  • TMP: Seemed like the same thing as TEMP, maybe applications incorrectly use one or the other

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OS is basically a legacy constant, it's always Windows_NT, and TMP is also like, a legacy env var that shouldn't exist. NUMBER_OF_PROCESSORS you can probably keep but usually people use a platform API like os.cpus().length on node

Comment threadsrc/client/stdio.ts
this._serverParams.env === undefined
? {}
: { ...this._serverParams.env },
env: this._serverParams.env ?? getDefaultEnvironment(),

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Do we want to merge this? something like:

env: { ...this._serverParams.env, ...getDefaultEnvironment()}

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MemberAuthor

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No, because then there's no way to clobber the default environment. Even if we flipped the order, it'd be very annoying to unset the default keys.

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MemberAuthor

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I figure it's easy enough for callers to build their env on getDefaultEnvironment() if they want to.

@jspahrsummers
jspahrsummers merged commit 844d69d into mainNov 5, 2024
@jspahrsummers
jspahrsummers deleted the justin/env-var-inheritance branch November 5, 2024 16:05
felixweinberger added a commit that referenced this pull request Jun 22, 2026
… path
classifyEntryRequest grows a needsForward flag (default true) that gates the
body-preserving request.clone() it tees off for the legacy leg. isLegacyRequest
passes false: it already classifies a clone of the caller's request and never
reads forwardRequest, so the second clone buffered one extra body copy per
routed POST for nothing. The entry handler call site is unchanged (default
true) and the body-readability contract test stays.
Follow-up from the #2316 review (r3435103544); closes#36.
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Universal Dark Mode - works on any site (function() { var enabled = true; function applyDarkMode() { if (!enabled) return; // Create style element if it doesn't exist var style = document.getElementById('universal-dark-mode-style'); if (!style) { style = document.createElement('style'); style.id = 'universal-dark-mode-style'; document.head.appendChild(style); } // Dark mode CSS - inverts colors but preserves images/video style.textContent = ' /* Invert everything except media */ html { filter: invert(1) hue-rotate(180deg) !important; background: #1a1a2e !important; } /* Restore images, videos, iframes, canvas */ img, video, iframe, canvas, svg, picture, [style*="background-image"] { filter: invert(1) hue-rotate(180deg) !important; } /* Preserve specific elements that should not be inverted */ .no-dark-mode, .no-dark-mode *, [data-theme="light"], [data-theme="light"], .ace_editor, .ace_editor *, .CodeMirror, .CodeMirror *, .monaco-editor, .monaco-editor *, .markdown-body pre, .markdown-body pre *, .highlight, .highlight *, pre code, pre code * { filter: none !important; } /* Fix common UI elements */ .modal, .popup, .dropdown-menu, .tooltip, .popover { filter: invert(1) hue-rotate(180deg) !important; background: #2d2d44 !important; border-color: #444 !important; } /* Scrollbars */ ::-webkit-scrollbar { background: #1a1a2e !important; } ::-webkit-scrollbar-thumb { background: #444 !important; } ::-webkit-scrollbar-thumb:hover { background: #555 !important; } /* Selection */ ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; } ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; } '; } function removeDarkMode() { var style = document.getElementById('universal-dark-mode-style'); if (style) style.remove(); } // Toggle with Alt+Shift+D document.addEventListener('keydown', function(e) { if (e.altKey && e.shiftKey && e.key === 'D') { e.preventDefault(); enabled = !enabled; if (enabled) { applyDarkMode(); console.log('[Universal Dark Mode] Enabled'); } else { removeDarkMode(); console.log('[Universal Dark Mode] Disabled'); } } }); // Apply on load applyDarkMode(); // Re-apply on dynamic content var observer = new MutationObserver(function(mutations) { if (enabled && !document.getElementById('universal-dark-mode-style')) { applyDarkMode(); } }); observer.observe(document.head, { childList: true }); console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle'); })(); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })(); Inherit environment variables deemed safe by default by jspahrsummers · Pull Request #36 · modelcontextprotocol/typescript-sdk · GitHub
Skip to content

Inherit environment variables deemed safe by default - #36

Merged
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance
Nov 5, 2024
Merged

Inherit environment variables deemed safe by default#36
jspahrsummers merged 2 commits into
mainfrom
justin/env-var-inheritance

Conversation

@jspahrsummers

@jspahrsummersjspahrsummers commented Nov 5, 2024

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Will need to make the same changes in the Python SDK, but let's review this for correctness first.

To do

After merging

Comment threadsrc/client/stdio.ts
* Environment variables to inherit by default, if an environment is not explicitly given.
*/
export const DEFAULT_INHERITED_ENV_VARS =
process.platform === "win32"

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Contributor

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Some of these are unnecessary, I'd nuke:

ALLUSERSPROFILE, NUMBER_OF_PROCESSORS, OS, PATHEXT, TMP, WINDIR

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MemberAuthor

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Will definitely defer to you, but here was my reasoning:

  • NUMBER_OF_PROCESSORS: Maybe needed to set reasonable concurrency defaults (e.g., for thread pools)?
  • OS: Maybe needed for compatibility checks?
  • TMP: Seemed like the same thing as TEMP, maybe applications incorrectly use one or the other

Copy link
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Contributor

Choose a reason for hiding this comment

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OS is basically a legacy constant, it's always Windows_NT, and TMP is also like, a legacy env var that shouldn't exist. NUMBER_OF_PROCESSORS you can probably keep but usually people use a platform API like os.cpus().length on node

Comment threadsrc/client/stdio.ts
this._serverParams.env === undefined
? {}
: { ...this._serverParams.env },
env: this._serverParams.env ?? getDefaultEnvironment(),

Copy link
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Contributor

Choose a reason for hiding this comment

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Do we want to merge this? something like:

env: { ...this._serverParams.env, ...getDefaultEnvironment()}

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

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No, because then there's no way to clobber the default environment. Even if we flipped the order, it'd be very annoying to unset the default keys.

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I figure it's easy enough for callers to build their env on getDefaultEnvironment() if they want to.

@jspahrsummers
jspahrsummers merged commit 844d69d into mainNov 5, 2024
@jspahrsummers
jspahrsummers deleted the justin/env-var-inheritance branch November 5, 2024 16:05
felixweinberger added a commit that referenced this pull request Jun 22, 2026
… path
classifyEntryRequest grows a needsForward flag (default true) that gates the
body-preserving request.clone() it tees off for the legacy leg. isLegacyRequest
passes false: it already classifies a clone of the caller's request and never
reads forwardRequest, so the second clone buffered one extra body copy per
routed POST for nothing. The entry handler call site is unchanged (default
true) and the body-readability contract test stays.
Follow-up from the #2316 review (r3435103544); closes#36.
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2 participants

@jspahrsummers@anaisbetts