MCP Checkup

npx add-mcp 'https://mcpcheckup.com/mcp'

What we have observed

[

3,772

](https://mcpcheckup.com/servers)Servers in the directoryPublic servers with at least one stored tool list.Browse the directory →

[

233,456

](https://mcpcheckup.com/methodology#frequency)Runs completedEvery probe run that finished since we began. Unsigned on-demand checks are not counted.How often we check →

[

135,536

](https://mcpcheckup.com/methodology#unsigned)Signed results issuedOne per run whose result carries a signed attestation, since we began. Counts results, not servers.What "observed, unsigned" means →

[

919

](https://mcpcheckup.com/servers/stats#toolsets)Servers whose tool set changed, last 30 daysTwo consecutive observations of the same server produced different tool set fingerprints. Each server is counted once.Tool set changes →

Protocol revisionRecorded in each server's latest result, among the 3,523 servers whose latest result is signed.

2025-11-251,770

2026-07-281,020

2025-06-18573

2024-11-0586

2025-03-2673

2025-11-051

What two numbers mean →

As of 2026-10-24 00:12 UTC · computed once a day · MCP servers in numbers →

For agents

Your agent can ask us before it connects to an MCP server.

MCP Checkup is listed in Claude's connector directory: in Claude, open Customize → Connectors → Browse and search for MCP Checkup.

See the listing →

Endpoint · Streamable HTTP · no key

https://mcpcheckup.com/mcp

Quickest way: Many agents can set this up themselves. Tell yours:

“Read https://mcpcheckup.com/agents and add the MCP Checkup server.”

Then ask your agent something like:

“Before we add acme/weather-mcp, check what MCP Checkup has observed about it.”

Six tools, limits and an example answer →

Claude Code

claude mcp add --transport http mcpcheckup https://mcpcheckup.com/mcp

Add --scope user to use it in every project.

Other clients: Cursor, VS Code, Muse Code, Claude, ChatGPT · dots, Grok, Hermes Agent, OpenClaw, Muse

Checked against each product's documentation on 2026-10-01.

Four states, never a score

There is no total, no grade, no health percentage. Every check lands in exactly one of four states, and a check that wasn't run is never confused with one that passed.

Verifiedthe assertion was checked and held.

Failedthe assertion was checked and did not hold.

Observed riska signal was observed; it isn't a pass/fail verdict.

Not checkednot checked this run — always with a stated reason.

Evidence you can check yourself

Each signed run is packaged as an attestation with a digest of the exact check-suite version — you don't have to take our word for a Verified or a Failed. The signature format is a public standard, and the public keys that verify the signatures are published at /keys.

Latest public results

• recoupaudit/recoup remote · today Provides 4 tools: get_recoup_overview, get_recoup_pricing, estimate_refund_exposure, list_supported_sources ↑ This one-line summary is machine-generated from observed tool names — never editorial copy. Executed10Verified10Not checked5Skipped5 View report → Observed todayFingerprint sha256:sha256:48972…Reachable on observed days (90d) 100% · 5/90 days observed
• zhamburger/forwanderingagents remote · today Provides 2 tools: get_experiment_status, list_guestbook_messages ↑ This one-line summary is machine-generated from observed tool names — never editorial copy. Executed10Verified10Not checked5Skipped5 View report → Observed todayFingerprint sha256:sha256:990d0…Reachable on observed days (90d) 100% · 5/90 days observed
• astranl/mcp remote · today Provides 30 tools: ask_astranl, check_counterparty_nl, record_counterparty_check, create_task, check_task… ↑ This one-line summary is machine-generated from observed tool names — never editorial copy. Executed10Verified9Observed risk1Not checked5Skipped5 View report → Observed todayFingerprint sha256:sha256:cbf80…Reachable on observed days (90d) 100% · 38/90 days observed
• cybermax-tools-8eb928/mailvett remote · today Provides 1 tool: validate_emails ↑ This one-line summary is machine-generated from observed tool names — never editorial copy. Executed10Verified10Not checked5Skipped5 View report → Observed todayFingerprint sha256:sha256:bf912…Reachable on observed days (90d) 100% · 13/90 days observed See all observed servers →

Built for people who maintain, not a team that scores you

It exists to give independent MCP maintainers — the people running one or a handful of servers, usually open source, usually without a dedicated budget — an honest, continuously-updated read on whether their server still does what it claims.