A read-only check and discovery tool for MCP servers, which connect an agent to outside services and data. It checks whether available connections are working and helps find one for a stated need.

Use it to verify connected MCP servers, diagnose unavailable connections, and look for an MCP server that supports a particular task.

It helps catch missing or unauthorized connections before integration work begins. It also avoids unsafe checks that could disrupt some services.

mcp — Skill for Claude Code by tonydzi: A read-only check and discovery tool for MCP servers…

Install

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.

agentmods

npx agentmods add skills/tonydzi/second-brain-starter-kit/mcp

Any agent

npx skills add tonydzi/second-brain-starter-kit --skill mcp

Clone the repo

git clone --depth 1 https://github.com/tonydzi/second-brain-starter-kit

Made for: Claude Code.

Or install second-brain-skills, the plugin that ships this one along with the rest of its 57 skills.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/tonydzi/second-brain-starter-kit/mcp.svg)](https://agentmods.dev/skills/tonydzi/second-brain-starter-kit/mcp)

Your own site

<a href="https://agentmods.dev/skills/tonydzi/second-brain-starter-kit/mcp"><img src="https://agentmods.dev/badge/skills/tonydzi/second-brain-starter-kit/mcp.svg" alt="Measured on agentmods" height="20"></a>

Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 934 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00069	$0.00934
Opus 5	$0.00034	$0.00467
Sonnet 5	$0.00014	$0.00187
Haiku 4.5	$0.00007	$0.00093

Measured 5d ago against content hash 39de8b048a58, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

mcp 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 5d 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.

skills/mcp/SKILL.md · 47 lines

How it starts

The opening of the file, as written. The whole thing — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/mcp — connector health-check & discovery

🧒 When reporting to Anton end with a child-simple "In plain words" recap. (memory eli5-always)

Two jobs: (1) health — is each MCP server alive & authorized? (2) discover — is there an MCP for a need Anton has? Full rules + the Telegram landmine = memory [[mcp-health-check]].

health (READ-ONLY, safe order)

In-session tool check FIRST (zero-risk) — if a server's tools are present in the session, call ONE cheap read tool to confirm auth + liveness:
- Telegram → mcp__telegram__get_me (expect Tony / @work_acct_a).
- WhatsApp → mcp__whatsapp__get_my_profile. n8n → mcp__n8n__n8n_health_check. Google Drive/Calendar → a list call. MongoDB → list-databases. This uses the ALREADY-RUNNING server — no second client.
Only if a server's tools are ABSENT → it didn't load. Diagnose registration ($USERPROFILE/.claude.json mcpServers) + processes, then reconnect.
⚠️ TELEGRAM LANDMINE: do NOT run claude mcp list or spawn a Telethon client as a casual check — a 2nd client on the same StringSession triggers AUTH_KEY_DUPLICATED and logs the account out. Prefer in-session get_me. Use claude mcp list only when the server clearly isn't loaded.
Zombie/leak watch (Windows): stdio MCPs launched via uv run/npx can orphan → prefer the direct interpreter as command; the "Telegram MCP Janitor" task (every 15 min) kills true orphans (no live claude.exe ancestor). Don't guess a hung process — verify with facts (alive? progress mtime? elapsed?).

discover

Use the registry tools: mcp__mcp-registry__suggest_connectors (for a stated need), mcp__mcp-registry__search_mcp_registry, mcp__mcp-registry__list_connectors (what's already available). Rank by: does it solve a REAL recurring need? subscription/local (free) over paid ([[prefer-included-limits-before-paid-api]])? does a stdio server risk Windows orphaning? Propose, don't auto-install — wiring a new server = Anton's call.

Read the full file on GitHub · 47 lines

Changes

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.

5d ago First seen · 47 lines · 69 tokens per session scan A 39de8b048a58

Subscribe to this mod's changes

mcp is a skill published in the GitHub repository tonydzi/second-brain-starter-kit (5 stars, last pushed 6d ago), licensed MIT. It adds 69 tokens to every session and 934 once invoked, about $0.0003 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 2026-08-31.

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