Copilot SDK
intellectronica/agent-skills
This skill helps with GitHub Copilot SDK work across Node.js/TypeScript, Python, Go, .NET, and Java.
Use before WebSearch to check if you already have the answer, when stuck on an error to find past fixes, or when entering a familiar project to recall past sessions and file changes.
Install Claude Historian
$ npx skills add Vvkmnn/claude-historian-mcp --skill claude-historian -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Vvkmnn/claude-historian-mcp claude-historian --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Vvkmnn/claude-historian-mcp.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/claude-historian .claude/skills/claude-historian && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "claude-historian" agent skill from https://github.com/Vvkmnn/claude-historian-mcp/tree/master/.claude/skills/claude-historian into .claude/skills/claude-historian/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-historian", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Vvkmnn/claude-historian-mcp/tree/master/.claude/skills/claude-historianType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Vvkmnn/claude-historian-mcp --skill claude-historian -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Vvkmnn/claude-historian-mcp claude-historian --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Vvkmnn/claude-historian-mcp.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/claude-historian .agents/skills/claude-historian && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "claude-historian" agent skill from https://github.com/Vvkmnn/claude-historian-mcp/tree/master/.claude/skills/claude-historian into .agents/skills/claude-historian/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-historian", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Vvkmnn/claude-historian-mcp --skill claude-historian -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Vvkmnn/claude-historian-mcp claude-historian --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Vvkmnn/claude-historian-mcp.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/claude-historian .cursor/skills/claude-historian && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "claude-historian" agent skill from https://github.com/Vvkmnn/claude-historian-mcp/tree/master/.claude/skills/claude-historian into .cursor/skills/claude-historian/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-historian", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Vvkmnn/claude-historian-mcp.git --path .claude/skills/claude-historian--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Vvkmnn/claude-historian-mcp --skill claude-historian -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Vvkmnn/claude-historian-mcp claude-historian --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Vvkmnn/claude-historian-mcp.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/claude-historian .gemini/skills/claude-historian && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "claude-historian" agent skill from https://github.com/Vvkmnn/claude-historian-mcp/tree/master/.claude/skills/claude-historian into .gemini/skills/claude-historian/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-historian", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Vvkmnn/claude-historian-mcp claude-historianInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Vvkmnn/claude-historian-mcp --skill claude-historian -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Vvkmnn/claude-historian-mcp.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/claude-historian .github/skills/claude-historian && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "claude-historian" agent skill from https://github.com/Vvkmnn/claude-historian-mcp/tree/master/.claude/skills/claude-historian into .github/skills/claude-historian/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-historian", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Vvkmnn/claude-historian-mcp --skill claude-historian -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Vvkmnn/claude-historian-mcp claude-historian --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Vvkmnn/claude-historian-mcp.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/claude-historian .opencode/skills/claude-historian && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "claude-historian" agent skill from https://github.com/Vvkmnn/claude-historian-mcp/tree/master/.claude/skills/claude-historian into .opencode/skills/claude-historian/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-historian", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
claude-historian- GitHub stars
- 179
- Token cost
- ~616 tokens
- SKILL.md length
- 242 words
- Files
- 1
- Skills in repo
- 1
- Repo updated
- First seen
- Licence
- MIT
At a glance
Use before WebSearch to check if you already have the answer, when stuck on an error to find past fixes, or when entering a familiar project to recall past sessions and file changes.
- Tasks that involve MCP servers
- SKILL.md covers When to Use, Quick Reference, Key Parameters and Common Mistakes
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Claude Historian is an agent skill from Vvkmnn/claude-historian-mcp. Use before WebSearch to check if you already have the answer, when stuck on an error to find past fixes, or when entering a familiar project to recall past sessions and file changes.
Its SKILL.md is about 620 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Agent Workflows, covering MCP servers. It works with Model Context Protocol, TypeScript and Node.js. The repository describes itself as: 📜 An MCP server for conversation history search and retrieval in Claude Code. The licence is MIT.
When your agent uses it
- Tasks that involve MCP servers
Example prompts
- “/claude-historian”
What it can do on your machine
Read from SKILL.md and the folder at commit b627cdf. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Claude Historian loads about 616 tokens when it runs. Until then it costs about 50 tokens; SKILL.md has 242 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from Vvkmnn/claude-historian-mcp at commit b627cdf, republished under its MIT licence (© Vvkmnn). 242 words, ~616 tokens.
Download SKILL.mdSave it as
.claude/skills/claude-historian/SKILL.md (or your agent's skills folder).- name
- claude-historian
- description
- Use before WebSearch to check if you already have the answer, when stuck on an error to find past fixes, or when entering a familiar project to recall past sessions and file changes.
Claude Historian
Search conversation history before starting fresh. You may already have the answer.
When to Use
Before WebSearch → search(query: "...", scope: "similar") or search(query: "...", scope: "conversations"). Past solutions beat web results.
Stuck on an error → search(query: "<error message>", scope: "errors"). Finds past fixes with code.
Entering a familiar project → search(scope: "sessions") for recent work. search(query: "...", scope: "plans") for past decisions.
Working on a familiar file → search(scope: "files", filepath: "src/index.ts"). Shows past changes with context.
Quick Reference
| Situation | Tool Call |
|---|---|
| Error with no obvious cause | search(query: "<error>", scope: "errors") |
| "Have I done this before?" | search(query: "...", scope: "similar") |
| Working on familiar file | search(scope: "files", filepath: "...") |
| Need past design reasoning | search(query: "...", scope: "plans") |
| What did I do last session? | search(scope: "sessions") |
| Successful tool workflows | search(scope: "tools") |
| General search | search(query: "...", scope: "conversations") |
| Deep-dive into session | inspect(session_id: "...") |
| Rules, skills, CLAUDE.md | search(query: "...", scope: "config") |
| Task management history | search(query: "...", scope: "tasks") |
| Memories across sessions | search(query: "...", scope: "memories") |
Key Parameters
scope: Target your search —conversations,errors,files,plans,config,tasks,similar,sessions,tools,memories, orall(default)limit: Number of results (default 10)project: Filter by project name substring (works with conversations, sessions)timeframe:today,yesterday,week,month
Common Mistakes
| Mistake | Fix |
|---|---|
| Going straight to WebSearch | Check historian first — past solutions are more relevant |
| Vague queries | Use specific terms: error messages, file paths, tool names |
Using scope: "all" for errors | Use scope: "errors" — it has dedicated fix extraction |
| Long keyword-dump queries | Keep to 3-5 specific terms, not 10+ generic ones |
© Vvkmnn, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude/skills/claude-historian of Vvkmnn/claude-historian-mcp.
Open the folder on GitHubat commit b627cdf
Compare with similar skills
Claude Historian next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Claude Historian this skillVvkmnn/claude-historian-mcp | 179 | — | ~616 | Automated safety check: Pass | MIT | |
| Copilot SDKintellectronica/agent-skills | 295 | — | ~3.2k | Automated safety check: Pass | CC0-1.0 | |
| Copilot SDKmicrosoft/skills | 3.1k | — | ~7.1k | Automated safety check: Pass | MIT | |
| MCP Server Builderanthropics/skills | 180k | 63 repos | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| MCP Server BuildershareAI-lab/learn-claude-code | 78k | 4 repos | ~1.2k | Automated safety check: Pass | MIT | |
| agentmemory Setup and Diagnosticsrohitg00/agentmemory | 29k | — | ~1k | Automated safety check: Notes | Apache-2.0 |
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- Official
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- Official
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anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
MCP Server Builder
shareAI-lab/learn-claude-code
Walks through building MCP servers in Python or TypeScript that expose tools, resources and prompts to Claude, with templates, registration and testing.
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Related
Works with
Categories
Questions about Claude Historian
What does Claude Historian do?
Use before WebSearch to check if you already have the answer, when stuck on an error to find past fixes, or when entering a familiar project to recall past sessions and file changes. Claude Historian is an agent skill from Vvkmnn/claude-historian-mcp. Use before WebSearch to check if you already have the answer, when stuck on an error to find past fixes, or when entering a familiar project to recall past sessions and file changes.
When should I use Claude Historian?
Claude Historian fits situations like: tasks that involve MCP servers.
How do I install Claude Historian in Claude Code?
Run `npx skills add Vvkmnn/claude-historian-mcp --skill claude-historian -a claude-code`. Or copy the skill folder (.claude/skills/claude-historian in Vvkmnn/claude-historian-mcp) into .claude/skills/claude-historian in your project. Claude Code loads it when a task matches its description.
How do I install Claude Historian in Codex?
Run `npx skills add Vvkmnn/claude-historian-mcp --skill claude-historian -a codex`. Or copy the skill folder (.claude/skills/claude-historian in Vvkmnn/claude-historian-mcp) into .agents/skills/claude-historian in your project. Codex loads it when a task matches its description.
Can I use Claude Historian in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Vvkmnn/claude-historian-mcp --skill claude-historian -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/claude-historian, .gemini/skills/claude-historian, .github/skills/claude-historian and .opencode/skills/claude-historian in your project.
What does Claude Historian need to run?
SKILL.md names no scripts, command-line tools or credentials: Claude Historian is instructions for the agent only.
Does Claude Historian access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Claude Historian safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Claude Historian use?
Claude Historian is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Claude Historian use?
About 616 tokens (SKILL.md is roughly 2.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Claude Historian?
Skills that share tags, products or a category with Claude Historian: Copilot SDK (intellectronica/agent-skills, 295 stars), Copilot SDK (microsoft/skills, 3.1k stars), MCP Server Builder (anthropics/skills, 180k stars) and MCP Server Builder (shareAI-lab/learn-claude-code, 78k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Claude Historian?
Vvkmnn (a GitHub user) maintains it in Vvkmnn/claude-historian-mcp, which has 179 GitHub stars. The repository was last updated on June 15, 2026.
Source: Vvkmnn/claude-historian-mcp on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.