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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17989 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
KaliCart Global (UCP Catalog)

UCP Catalog for independent WooCommerce stores: consented, federated, with live price checks.

E-commerceCode & DevOps

Outdated check93 ms14 / 22
Should I Live Here?

Rank and compare US counties on health, hazards, crime, rent, internet and air, from public data.

Developer ToolsCode & DevOps

Outdated check93 ms14 / 22
ENTIA Entity Verification

Verified business identity for AI agents: 11.3M entities, EU VAT (VIES), BORME, GLEIF. Free trial.

Developer ToolsCode & DevOps

Outdated check93 ms14 / 22
SF Bay Area Transit MCP

Plan San Francisco and Bay Area transit trips and check upcoming stop departures. Free, no API keys.

Developer ToolsCode & DevOps

Outdated check93 ms14 / 22
data-breach-detector

Read-only breach intel, full history 2007-today: reports THAT an org was breached, never the data.

Developer ToolsCode & DevOps

Outdated check93 ms14 / 22
Undertow market liquidity and exit-cost tools

Dated exit evidence, depth, tiers and gold cash scenarios. No executable quotes or trade authority.

Developer ToolsCode & DevOps

Outdated check94 ms14 / 22
Eldertongue

Old English dictionary over MCP: headwords, inflection tables, form ID, Beowulf citations.

Developer ToolsCode & DevOps

Outdated check94 ms14 / 22
ClinicMarketIQ Public Data

Read-only U.S. healthcare dataset metadata, schemas, immutable downloads, and checksums.

HealthcareCode & DevOps

Outdated check94 ms14 / 22
Diffusion Love Knowledge

Public knowledge and news search. Unmatched public queries may be retained for research.

Developer ToolsCode & DevOps

Outdated check95 ms14 / 22
getorderability: AIO orderability door

AIO orderability: may a capital product be ordered for a client category? Signed by the home node.

Developer ToolsCode & DevOps

Outdated check95 ms14 / 22
Business Agent OS

A free, read-only remote MCP server with templates for a file-based business operating system.

Developer ToolsCode & DevOps

Outdated check95 ms14 / 22
Awardia

EU public tenders for AI agents: open tenders, award history, competitors and bid intelligence.

Developer ToolsCode & DevOps

Responded96 ms14 / 22
Turniermeister — Tournament Engine

Turnier engine: AI prepares a real tournament (bracket, schedule) and returns a claim link.

Developer ToolsCode & DevOps

Outdated check96 ms14 / 22
Sendiment

Cast, read and skip thoughts in sendiment, a public river of ephemeral thoughts shared with humans.

Developer ToolsCode & DevOps

Outdated check96 ms14 / 22
RTBlint

Validate OpenRTB bid requests and responses against IAB specs. ARTF, Rust core.

Developer ToolsCode & DevOps

Outdated check96 ms14 / 22
io.github.Kotaro-Studio/curanz-sounds

生年月日から占いを計算して答える。星座・九星気学の本命星と年盤・四柱推命の日干と流年・天中殺・数秘術の個人年。出生時刻は不要。古典の暦法による計算。

Developer ToolsCode & DevOps

Responded97 ms14 / 22
Smart Rings Atlas

Smart ring research and regional buying links; affiliate links may earn commission.

Marketing & SalesCode & DevOps

Responded98 ms14 / 22
Contract Powers

Who can still change this EVM contract, and what can they do to holders?

LegalCode & DevOps

Outdated check98 ms14 / 22
Dataset Diff & Change Detector

Compare two versions of a JSON row list: what was added, removed or changed, field by field.

Developer ToolsCode & DevOps

Outdated check99 ms14 / 22
Mansa African Financial Reference Data

African bank & SWIFT codes, NUBAN resolution, mobile networks, holidays and ISO 4217 currencies.

Developer ToolsCode & DevOps

Outdated check99 ms14 / 22
bitfence Risk Oracle

Pre-transaction token risk checks for autonomous agents on six chains. Read-only; paid via x402.

Developer ToolsCode & DevOps

Outdated check99 ms14 / 22
life. scored.

Rebuilds the scores real systems run on you — credit, actuarial, lending — in the open, cited.

Developer ToolsCode & DevOps

Outdated check99 ms14 / 22
Probe V0

Experimental MCP server for current empirical verification of explicit public HTTPS endpoint claims.

Developer ToolsCode & DevOps

Outdated check99 ms14 / 22
io.github.machinegrade/validate

Deterministic validation for AI-generated artifacts: JSON Schema, OpenAPI response, SQL syntax.

Developer ToolsCode & DevOps

Responded101 ms14 / 22

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