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

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Remote MCP servers

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18500 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
Cfpb

CFPB MCP — Consumer Financial Protection Bureau complaint database (free, no auth)

Developer ToolsDatabase

Responded213 ms15 / 22
Moralis

Moralis MCP — wraps the Moralis Web3 Data API (moralis.com)

Developer ToolsCode & DevOps

Responded280 ms15 / 22
Actora Platform — Agent Publishing, Subscriptions & A2A

Actora developer tools: ERC-8004 identity, subscriptions, listings, A2A, reputation.

Developer ToolsPayments & trading

Responded1204 ms15 / 22
Amf Filings

France AMF Regulated Filings MCP — keyless, same-day-fresh.

Developer ToolsCode & DevOps

Responded63 ms15 / 22
Db Rail

DB Rail MCP — German + European rail and public transport, keyless.

Developer ToolsCode & DevOps

Responded74 ms15 / 22
Amtrak

Amtrak MCP — live Amtrak train tracking via the community Amtraker API (api-v3.amtraker.com, a…

Developer ToolsCode & DevOps

Responded79 ms15 / 22
Datos Co

datos.gov.co — Colombia's national open-data portal (Socrata platform).

Developer ToolsCode & DevOps

Responded80 ms15 / 22
Batchdata

BatchData MCP — wraps the BatchData property-data + skip-trace API (batchdata.com)

Developer ToolsCode & DevOps

Responded79 ms15 / 22
Base64

Encoding MCP — Base64 / Base64URL / Base32 / Hex.

Developer ToolsCode & DevOps

Responded80 ms15 / 22
Acled

ACLED MCP — Armed Conflict Location & Event Data Project

Developer ToolsCode & DevOps

Responded95 ms15 / 22
Data Fortworth

Fort Worth Open Data (data.fortworthtexas.gov) Socrata MCP.

Developer ToolsCode & DevOps

Responded84 ms15 / 22
Data Fcc

FCC Open Data (opendata.fcc.gov) Socrata MCP.

Developer ToolsCode & DevOps

Responded94 ms15 / 22
Arxiv

arXiv MCP — preprint server search (free, no auth)

Developer ToolsCode & DevOps

Responded99 ms15 / 22
Artsmia

Minneapolis Institute of Art (Mia) collection MCP.

Developer ToolsCode & DevOps

Responded103 ms15 / 22
China Disclosures

China Disclosures MCP — non-SEC Chinese biotech deals and HK/STAR IPO financing, read straight out…

Developer ToolsCode & DevOps

Responded119 ms15 / 22
Crawlgraph

CrawlGraph MCP — backlink intelligence on the public Common Crawl webgraph (4.4B edges, 120M…

Developer ToolsBrowser & web scraping

Responded79 ms15 / 22
Creative Constraints

creative-constraints — an original deck of 162 domain-neutral creative constraints, drawn by…

Developer ToolsCode & DevOps

Responded88 ms15 / 22
Committee Releases

Committee Releases — documents congressional committees publish on their OWN websites: press…

Developer ToolsFile & docs

Responded92 ms15 / 22
Carsxe

CarsXE MCP — wraps the CarsXE Vehicle Data API (carsxe.com)

Developer ToolsCode & DevOps

Responded92 ms15 / 22
Data Nj

New Jersey Open Data (data.nj.gov) Socrata MCP.

Developer ToolsCode & DevOps

Responded93 ms15 / 22
Commoncrawl

Common Crawl's public web archive — find every time a URL was crawled since 2008 and read the…

Developer ToolsBrowser & web scraping

Responded95 ms15 / 22
Data Toronto

DataToronto MCP — City of Toronto open data (open.toronto.ca, CKAN API).

Developer ToolsCode & DevOps

Responded96 ms15 / 22
Data Nl

Netherlands Open Data (data.overheid.nl/data) CKAN MCP.

Developer ToolsCode & DevOps

Responded99 ms15 / 22
Cataas

CATAAS MCP — Cat as a Service (free, no auth)

Developer ToolsCode & DevOps

Responded105 ms15 / 22

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