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.

Connect your agent

40680 servers

Ordered by checks passed
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
FDA import alert red lists

Is a foreign supplier on an FDA import alert red list, detained at the US border? 14,000+ listings.

Developer ToolsCode & DevOps

Responded139 ms15 / 22
Perigee

Positions, distances, mission facts and 3D views of objects orbiting the Earth, Moon, Mars and Sun.

Developer ToolsCode & DevOps

Responded140 ms15 / 22
Financial Modeling Prep MCP Server

MCP server for Financial Modeling Prep API with 250+ financial data tools

Developer ToolsCode & DevOps

Responded141 ms15 / 22
yieldhunter

Risk-adjusted stablecoin yield ranks for other agents. Research only. Never holds keys or executes.

Finance & CryptoPayments & trading

Responded141 ms15 / 22
InjectScan

Prompt-injection scanner for agents: risk score, categories and spans for text, pages, MCP tools

Developer ToolsCode & DevOps

Responded141 ms15 / 22
Digital Gemology: gem identification and gemstone properties

Identify gemstones by refractive index, birefringence, SG, pleochroism and spectrum. Compare 7 gems

OtherOther

Responded141 ms15 / 22
Agent Tools MCP

32 free MCP tools for data validation, text optimization, and synthetic test data.

Developer ToolsCode & DevOps

Responded142 ms15 / 22
SimplyUtils

Developer and text tools: JSON, QR codes, units, passwords, UUIDs, hashes, Base64, regex and more.

Developer ToolsCode & DevOps

Responded143 ms15 / 22
Nifra docs

Nifra docs, runnable examples, and API types as an MCP server for any AI assistant.

Developer ToolsCode & DevOps

Responded143 ms15 / 22
Digital Gemology: gemstone and diamond cut library

Gemstone and diamond cuts: ray-traced brilliance, fire and sparkle in 7 gems, 3D and faceting files

OtherOther

Responded143 ms15 / 22
publicdata.au

Search, filter, count and sum Australian government open data, with every version kept.

GovernmentData access / search

Responded143 ms15 / 22
Cellarion Wine Registry

Public wine registry and guides: search wines, grapes, regions, appellations. No account.

OtherData access / search

Responded144 ms15 / 22
Frankfurter

Convert currencies and fetch blended FX rates from 50+ institutional sources.

Developer ToolsCode & DevOps

Responded145 ms15 / 22
NBA Prop Lab

NBA and WNBA player-prop analytics: daily board, graded track record, matchup and referee data.

Developer ToolsCode & DevOps

Responded145 ms15 / 22
JobsPipe

Live job postings from 30+ ATS feeds and job boards, one schema. Sign in with OAuth, or use a key.

Developer ToolsCode & DevOps

Responded145 ms15 / 22
FPV-DB

Specs of FPV drone parts and every Betaflight/INAV CLI setting by release; checks a pasted diff

Developer ToolsCode & DevOps

Responded145 ms15 / 22
MoltNode by Chord

Read 31 blockchains over JSON-RPC and swap via Chord: best route, unsigned tx, simulation. No key.

Finance & CryptoPayments & trading

Responded146 ms15 / 22
referencesource.org

Verified reference data; each record carries its source URL and quote. verify_quote checks claims.

Developer ToolsCode & DevOps

Responded146 ms15 / 22
AgentGate

Check if an AI agent is registered, Active and Verified in the Concordium Agent Registry (CIS-8004).

Developer ToolsCode & DevOps

Responded146 ms15 / 22
MusedIn

Job network for AI agents: join, apply to jobs, post jobs, check work records. OAuth for writes.

Developer ToolsCode & DevOps

Responded146 ms15 / 22
Ecommerce Leads

Ecommerce store metrics by domain: revenue, ad spend, traffic. Log in to search 600k+ stores.

E-commerceData access / search

Responded146 ms15 / 22
NEMO x402 Micro-Services

34 paid tools: site/SEO, weather, crypto+markets, podcasts, YouTube, Polymarket. x402/MPP/Stripe.

Finance & CryptoPayments & trading

Responded147 ms15 / 22
Bonafido: Business Domain Verification API

Bonafido: is a domain a real business site? Verdict, trust score, risk flags.

Developer ToolsCode & DevOps

Responded147 ms15 / 22
RecallChecker — Vehicle Safety Recalls

Check U.S. NHTSA vehicle safety recall campaigns by make, model, and year. Live official data.

Marketing & SalesData access / search

Responded147 ms15 / 22

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