Find the best CLAUDE.md, AGENTS.md and Claude skills

MicrosoftSkill

sessions

microsoft/vscode/.github/skills/sessions/SKILL.md

Core principles and workflow router for changes to the Agents Window under src/vs/sessions.

Often used withtool-rename-deprecation·hygiene·fix-errors

MicrosoftSkill

setup-environment

microsoft/vscode/.github/skills/setup-environment/SKILL.md

First Time Setup

MicrosoftSkill

smoke-tests

microsoft/vscode/.github/skills/smoke-tests/SKILL.md

Use when running VS Code smoke tests or working on smoke-test CI steps. Covers pnpm run smoketest / smoketest-no-compile, grep filtering tests, and a temporary repeat-loop technique for tracking down flaky smoke tests in CI.

MicrosoftSkill

sweeper-implement

microsoft/vscode/.github/skills/sweeper-implement/SKILL.md

Implement a VS Code Sweeper agent-ready issue — fetch the sweeper's review record from its state repo, implement the change in the current vscode checkout from the review's brief (an implement-ready record) or from an approved sweeper-plan file, validate the diff against it, and — after the maintainer has reviewed the changes in their editor — open a draft PR. Use ONLY when the request explicitly asks for the sweeper — "sweeper-implement", "sweeper", "vscodesweeper", a sweeper record, an agent-ready issue, or a sweeper brief — or asks to implement a sweeper plan ("implement plan <n>", a `.sweeper/plans/issue-<n>.md` file). Do NOT use for a plain "fix this issue" request that doesn't mention the sweeper; fix those directly with your normal tools instead.

No other project uses it yet

MicrosoftSkill

sweeper-plan

microsoft/vscode/.github/skills/sweeper-plan/SKILL.md

Plan a VS Code Sweeper agent-ready issue with the maintainer — fetch the sweeper's review record from its state repo, put the review's open decisions to the maintainer, and write a plan file (.sweeper/plans/issue-<n>.md) for them to edit in their editor; it writes no code and ends there — the sweeper-implement skill implements the approved plan. Use ONLY when the request explicitly asks for the sweeper plan — "sweeper-plan", "plan … with the sweeper", a sweeper record or agent-ready issue to plan first. Do NOT use for a plain planning request that doesn't mention the sweeper.

MicrosoftSkill

symbolicate-crash-dump

microsoft/vscode/.github/skills/symbolicate-crash-dump/SKILL.md

Symbolicate a native VS Code crash dump (.dmp) using electron-minidump. Use when given a crash dump file, asked to symbolicate a crash, resolve missing method names in a native crash backtrace, or attach Electron/Insiders/Stable symbol files. VS Code team members only; requires macOS or Linux.

MicrosoftSkill

unit-tests

microsoft/vscode/.github/skills/unit-tests/SKILL.md

Use when running unit tests in the VS Code repo. Covers the runTests tool, scripts/test.sh (macOS/Linux) and scripts/test.bat (Windows), and their supported arguments for filtering, globbing, and debugging tests.

MicrosoftSkill

update-instructions

microsoft/vscode/.github/skills/update-instructions/SKILL.md

update-instructions

MicrosoftSkill

update-screenshots

microsoft/vscode/.github/skills/update-screenshots/SKILL.md

Update the committed blocks-ci screenshot hashes after the "Screenshots & Tests" check fails, or investigate a screenshot diff reported on a PR. Use when asked to update, accept, or refresh component screenshot baselines from CI. This skill should be run as a subagent.

MicrosoftSkill

ux-css-layout

microsoft/vscode/.github/skills/ux-css-layout/SKILL.md

VS Code CSS conventions, file organization, class naming, standard sizes, SplitView/Grid layout, scrollable content, responsive layout, and text overflow/ellipsis patterns. Use when writing CSS, building layouts, or fixing text truncation issues.

MicrosoftSkill

ux-theming

microsoft/vscode/.github/skills/ux-theming/SKILL.md

VS Code theming, color tokens, widget styles, focus indicators, and high-contrast theme support. Use when registering colors, styling widgets with theme tokens, or ensuring HC/focus compliance.

MicrosoftSkill

validate-ui-scenario

microsoft/vscode/.github/skills/validate-ui-scenario/SKILL.md

Use when reproducing a UI bug or verifying a fix by driving a real VS Code window end to end and capturing evidence. Writes a scenario file, runs it against a dev build or installed Insiders, and produces a captioned video, per-step screenshots, a Playwright trace, and an HTML report to attach to an issue or pull request.

No other project uses it yet

MicrosoftSkill

vscode-dev-workbench

microsoft/vscode/.github/skills/vscode-dev-workbench/SKILL.md

Use when the user wants to run the vscode.dev server locally and exercise the VS Code workbench or Agents window in the integrated browser against the local `microsoft/vscode` sources. Covers starting the dev server, the `vscode-quality=dev` URL, browser-driven interaction patterns, and optionally wiring up a local mock agent host for the Agents window.

MicrosoftAGENTS.md

vscode / agentHost

microsoft/vscode/src/vs/platform/agentHost/AGENTS.md

Node runtime service construction is documented separately in node/serviceBootstrapping.md. Host startup timings, process-lifetime correlation, and session workload counts are documented in PERFORMANCE.md. Status: COMPLETE (2026-07-01) All waves A–D and gates G-B1, G-C1, G-C2, G-D1 are done. Codex, Claude, and Copilot all use the unified orchestrator path. Codex advertises multipleChats: { fork: true, sideChat: true }. Model-backed peer, fork, and side-chat parity scenarios run in deterministic replay. The operational chat surface (send/abort/model/agent/history) is fully chat-addressed and uniform across harnesses. Session ownership…

No other project uses it yet

MicrosoftAGENTS.md

vscode / state

microsoft/vscode/src/vs/platform/agentHost/common/state/AGENTS.md

This directory contains the VS Code-facing wrappers around the Agent Host Protocol (AHP) state model. Read this before modifying protocol types. The generated protocol includes the Changesets model: The generated copy intentionally carries the optional CreateChatParams.title on top of the .ahp-version source commit 6eec1b91. Until the recorded pin advances to an AHP commit containing this field, preserve or reapply this generated delta when syncing. Neither titles nor initial messages require an additional capability; source-based creation still uses the existing fork…

No other project uses it yet

MicrosoftAGENTS.md

vscode / prompts

microsoft/vscode/src/vs/platform/agentHost/node/copilot/prompts/AGENTS.md

This directory customizes the system prompt for Copilot CLI agent host (ahp+cli) sessions. Read this before changing how the system message is built or adding per-model / per-tool guidance. It mirrors the Copilot extension's extensions/copilot/.../prompts/node/agent/ (agentPrompts), but the agent host runs in its own process and cannot use prompt-tsx, so contributors return plain data the SDK accepts directly. Unless the matching chat.agentHost.copilot.modelCapabilityOverrides entry provides a YAML promptOverrideString or promptOverrideFile containing systemPrompt, resolveSystemMessageConfig(model, context) layers, in order: The per-model prompt override…

No other project uses it yet

MicrosoftAGENTS.md

vscode / node

microsoft/vscode/src/vs/platform/agentHost/test/node/AGENTS.md

For tests in this area that touch the SessionDatabase, they MUST use an in-memory database, not a real database file on disk. Use SessionDatabase.open(':memory:') and see the examples from existing tests.

No other project uses it yet

MicrosoftSkill

act-on-feedback

microsoft/vscode/src/vs/sessions/skills/act-on-feedback/SKILL.md

Act on user feedback attached to the current session. Use when the user submits feedback on the session's changes via the Submit Feedback button.

MicrosoftSkill

automate

microsoft/vscode/src/vs/sessions/skills/automate/SKILL.md

Propose an automation from a completed task or a new idea, then create it after approval. Use when the user asks to create an automation or wants scheduled local or cloud agent work.

MicrosoftSkill

code-review

microsoft/vscode/src/vs/sessions/skills/code-review/SKILL.md

Perform a code review of the current session's changes. Use when the user requests a code review via the Run Code Review button in the Changes toolbar.

Often used withclose-spec·add-new-model·compare-screenshots