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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18175 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
yieldsentinel

Policy check on a described yield position. Complement to yieldhunter. Research only.

Developer ToolsCode & DevOps

Responded133 ms15 / 22
l0g.fr Risk Intelligence

Read-only macro risk analysis, evidence, signals, and source-backed research from l0g.fr.

Developer ToolsCode & DevOps

Responded134 ms15 / 22
AI Footprint

Water and energy footprint of AI use: chat prompts, agent sessions, methodology and sources.

Developer ToolsCode & DevOps

Responded135 ms15 / 22
Fresh402 Agent Intelligence

Four web/API/Base workflows, 11 paid MCP/REST resources and free Register; x402/MPP/prepaid.

Developer ToolsCode & DevOps

Responded136 ms15 / 22
Passage Data — cited environmental limits

Cited US, Canadian, EU limits (discharge, drinking water, soil, air); species status; DwC archives

Developer ToolsCode & DevOps

Responded137 ms15 / 22
RegEvidenceHub Taxi

RegEvidenceHub Taxi: England taxi/PHV licensing preflight and council comparison.

Developer ToolsCode & DevOps

Responded137 ms15 / 22
WebRead

Read any public web page as clean Markdown for LLMs. Respects robots.txt. Free tier; x402 paid API.

Developer ToolsFile & docs

Responded137 ms15 / 22
FindAIforWork Directory

Search and compare AI tools for work from a curated, read-only directory.

Developer ToolsCode & DevOps

Responded138 ms15 / 22
apiwatch

Is this model or API still safe to call? Retirement and breaking change dates, with the fix.

Developer ToolsCode & DevOps

Responded139 ms15 / 22
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
InjectScan

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

Developer ToolsCode & DevOps

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
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
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
Bonafido: Business Domain Verification API

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

Developer ToolsCode & DevOps

Responded147 ms15 / 22

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