MCP HeartbeatTHE MCP OBSERVATORY
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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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1052 servers

Ordered by checks passedClear filters
Dated server measurements. The status describes the last probe or a listed authentication requirement. Checks that have not been measured are not failures. Open a server to inspect the evidence.
Server / capabilityLast probeMedian latencyChecks passedLast checked
ProfessionalHeadshot.io

LinkedIn, Slack and GitHub profile photo specs, headshot style guides and a free headshot audit.

MediaCommunication & messaging

Outdated check1114 ms13 / 22
io.github.BenAHammond/code-auditor-mcp

Enforces architectural invariants and code quality rules inside your AI agent's edit loop.

Developer ToolsCode & DevOps

Responded1146 ms13 / 22
RepoAlerts

Rising GitHub repos with fake stars filtered out: search, trending, repo pages, alternatives.

Developer ToolsCode & DevOps

Outdated check1252 ms13 / 22
Code Refactor

Refactor legacy code into modern, idiomatic code without changing its behavior.

Developer ToolsCode & DevOps

Outdated check1290 ms13 / 22
ihumane

Human know-how for AI agents: rules, reasons and checks for design, code, product and writing.

Developer ToolsCode & DevOps

Outdated check1382 ms13 / 22
SODAX Builders MCP

Cross-network DeFi API data, AMM analytics, and SDK docs for 17+ networks.

Developer ToolsCode & DevOps

Responded1452 ms13 / 22
IFC India Import Duty & Landed Cost

India import duty (BCD, SWS, AIDC, IGST) by HS code and China-to-India landed cost estimates.

OtherOther

Outdated check1536 ms13 / 22
GoCodebook — California Building Codes

Verbatim California Title 24 and local zoning code lookup by section number, with citations.

Real Estate & PropertyKnowledge & memory

Outdated check1779 ms13 / 22
pg.ddx.io: the PostgreSQL community's memory

Every PostgreSQL mailing list since 1991, linked to the commits, code, commitfest and docs.

Developer ToolsCommunication & messaging

Outdated check2228 ms13 / 22
Apex (smartapex.uk) AI Component Card Store

Run verified read-only code tools: quant diagnostics + agent-ops preflight, no source exposure.

Developer ToolsCode & DevOps

Responded2239 ms13 / 22
com.htagai/htag-docs

Public HTAG discovery for MCP tools, API endpoints, OpenAPI ops, and agents.

Developer ToolsCode & DevOps

Outdated check2602 ms13 / 22
Responded2806 ms13 / 22
Fiscalisto API docs

Docs for Fiscalisto's Mexican e-invoicing API (CFDI 4.0): search, operations, SDK code, errors.

Developer ToolsData access / search

Outdated check2905 ms13 / 22
Ziplore: US ZIP Code API (county, time zone, demographics, radius)

Ziplore: US ZIP to county, FIPS, time zone, Census demographics; radius and city ZIPs. Free, no key.

GovernmentCode & DevOps

Responded402 ms13 / 22
Mic

MIC — ISO 10383 Market Identifier Code decoder (fleet #3261)

Developer ToolsCode & DevOps

Outdated check63 ms13 / 22
New Mexico Code

New Mexico Statutes Annotated 1978 (NMSA 1978) — section lookup, chapter list, and catchline…

LegalCode & DevOps

Outdated check94 ms13 / 22
Mississippi Code

Mississippi Code of 1972 (Annotated) — state statutes by citation, and a chapter list by title.…

LegalCode & DevOps

Outdated check94 ms13 / 22
Northern Mariana Code

Commonwealth Code of the Northern Mariana Islands (CMC) — CNMI statutes by citation (e.g. '6 CMC §…

LegalCode & DevOps

Outdated check95 ms13 / 22
North Dakota Code

North Dakota Century Code — state statutes by citation and by topic. Fleet #2743.

LegalCode & DevOps

Outdated check96 ms13 / 22
New Hampshire Code

New Hampshire RSA (Revised Statutes Annotated) — state statutes by citation and by topic. Fleet…

LegalCode & DevOps

Outdated check96 ms13 / 22
Minnesota Code

Minnesota Statutes — state statutes by citation.

LegalCode & DevOps

Outdated check96 ms13 / 22
North Carolina Code

North Carolina General Statutes — state statutes by citation, plus topic search.

LegalCode & DevOps

Outdated check97 ms13 / 22
New Jersey Code

New Jersey Statutes (N.J.S.A.) — section by citation (with amendment history), plus topic search.

LegalCode & DevOps

Outdated check97 ms13 / 22
Michigan Code

Michigan Compiled Laws (statutes) and, since fleet #3957, the Michigan Administrative Code (agency…

LegalCode & DevOps

Outdated check97 ms13 / 22

Automated measurements. Not a rating. Unmeasured checks are not failures. How to read the evidence