Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add eric861129/SKILLS_All-in-one --skill claude-mcp-expertgit clone --depth 1 https://github.com/eric861129/SKILLS_All-in-oneWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/eric861129/skills_all-in-one/claude-mcp-expert)<a href="https://agentmods.dev/skills/eric861129/skills_all-in-one/claude-mcp-expert"><img src="https://agentmods.dev/badge/skills/eric861129/skills_all-in-one/claude-mcp-expert/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/eric861129/skills_all-in-one/claude-mcp-expert"><img src="https://agentmods.dev/badge/skills/eric861129/skills_all-in-one/claude-mcp-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00080 | $0.02235 |
| Opus 5 | $0.00040 | $0.01118 |
| Sonnet 5 | $0.00016 | $0.00447 |
| Haiku 4.5 | $0.00008 | $0.00224 |
Grade A, and why
claude-mcp-expert scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 326 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Code MCP Expert
Connect Claude Code to external tools, databases, and services using Model Context Protocol (MCP).
When to Use
- User wants to connect external services (GitHub, Jira, Sentry)
- User needs database access (PostgreSQL, MongoDB)
- User asks about MCP configuration or
.mcp.json - User has MCP connection or authentication issues
What is MCP?
Model Context Protocol (MCP) is an open standard that connects AI agents to:
- External APIs (GitHub, Jira, Notion, Slack)
- Databases (PostgreSQL, MongoDB, MySQL)
- File systems (local, Google Drive)
- Custom integrations
Quick Start
# Add an HTTP server
claude mcp add --transport http sentry https://mcp.sentry.dev/mcp
# Add an SSE server
claude mcp add --transport sse atlassian https://mcp.atlassian.com/v1/sse
# Add a stdio server (npm package)
claude mcp add --transport stdio github -- npx -y @modelcontextprotocol/server-github
# Manage servers interactively
/mcp
Transport Types
HTTP (Most Common)
For cloud services with REST-like endpoints.
claude mcp add --transport http sentry https://mcp.sentry.dev/mcp
claude mcp add --transport http github https://api.github.com/mcp
claude mcp add --transport http notion https://mcp.notion.com/mcp
SSE (Server-Sent Events)
For streaming services.
claude mcp add --transport sse atlassian https://mcp.atlassian.com/v1/sse
claude mcp add --transport sse asana https://mcp.asana.com/sse
stdio (Local/NPM Packages)
For local tools or npm packages.
claude mcp add --transport stdio postgres \
--env POSTGRES_CONNECTION_STRING="postgresql://user:pass@localhost:5432/db" \
-- npx -y @modelcontextprotocol/server-postgres
claude mcp add --transport stdio filesystem \
--env ALLOWED_DIRECTORIES="/path/to/dir" \
-- npx -y @modelcontextprotocol/server-filesystem
Popular Integrations
Development Tools
| Service | Command |
|---|---|
| Sentry | claude mcp add --transport http sentry https://mcp.sentry.dev/mcp |
| GitHub | claude mcp add --transport http github https://api.github.com/mcp |
| Socket | claude mcp add --transport http socket https://mcp.socket.dev/ |
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 326 lines · 80 tokens per session scan A f6bdb8b037a5
claude-mcp-expert is a skill published in the GitHub repository eric861129/SKILLS_All-in-one (52 stars, last pushed 4mo ago), licensed MIT. It adds 80 tokens to every session and 2,235 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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