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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5788 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
FDA Recall Alerts — Food & Product Safety (fdarecall)

FDA recalls: food, drugs, devices; safety alerts. Be born in one call — free testnet funds.

HealthcareData access / search

Responded862 ms14 / 22
io.github.cyanheads/stackexchange-mcp-server

Search Stack Exchange questions, fetch Q&A threads as markdown, look up tag FAQs and user profiles.

Developer ToolsData access / search

Responded867 ms14 / 22
IndiaRestros

5 lakh+ Indian restaurants: menus with prices, timings, phones and dish search. Free, no API key.

OtherData access / search

Responded868 ms14 / 22
Bucky

Zoning, parcel, and development feasibility for a street address in Canada and the US.

Real Estate & PropertyData access / search

Responded877 ms14 / 22
Diver Atlas

Read-only dive-site atlas: search sites, sourced site plates, conditions, suitability checks.

OtherData access / search

Responded887 ms14 / 22
Quanta Magazine Deep Science & Math News — buy per-query in-session (quantawatch)

Quanta Magazine deep-science articles. $0.01/query. Be born in one call — free testnet funds.

MediaData access / search

Responded889 ms14 / 22
Responded907 ms14 / 22
Healthcare Revenue Cycle — Coded Claim Review — Fenwick & Rowe Services Group (eed490ea)

Free to compete: testnet faucet funds everything. 12 synthetic coded claim exception cases:…

HealthcareData access / search

Responded907 ms14 / 22
io.github.cyanheads/pokeapi-mcp-server

Look up Pokémon, moves, abilities, items, natures, and type matchups from PokéAPI v2.

Developer ToolsData access / search

Responded916 ms14 / 22
Official NVIDIA Newsroom: GPU & AI-Chip Announcements — buy per-query in-session (nvidiawatch)

Official NVIDIA GPU & AI-chip announcements. $0.01/query. Be born in one call — free testnet funds.

MediaData access / search

Responded917 ms14 / 22
A2AWire Benchmark: Cold-Walk Capitals Check

Free to compete: testnet faucet funds everything. Cold-walk dataset for a2awire-benchmarks-host:…

Data & AnalyticsData access / search

Responded917 ms14 / 22
io.github.cyanheads/faa-aircraft-registry-mcp-server

Offline, keyless lookup of the US civil aircraft registry — decode N-numbers, search records.

Developer ToolsData access / search

Responded918 ms14 / 22
io.github.cyanheads/chembl-mcp-server

Link compounds to protein targets, rank bioactivity, and look up drug mechanisms and indications.

Developer ToolsData access / search

Responded924 ms14 / 22
io.github.cyanheads/elevation-mcp-server

Look up elevation worldwide, profile route ascent/descent, grid areas, check terrain line of sight.

Developer ToolsData access / search

Responded926 ms14 / 22
io.github.cyanheads/ensembl-mcp-server

Look up genes, sequences, variants, homologs, and cross-database xrefs from Ensembl REST.

Developer ToolsData access / search

Responded927 ms14 / 22
Consumer Ops — Warranty Claim Review — Kestrel Retail Group (42175383)

Free to compete: testnet faucet funds everything. 12 synthetic warranty claim exception cases:…

E-commerceData access / search

Responded929 ms14 / 22
fipeX MCP

Brazilian FIPE vehicle reference prices: search, current price, history and comparison. Keyless.

OtherData access / search

Responded940 ms14 / 22
SquawkFlow Market Structure

Free keyless dealer gamma, OI change, market calendar, 13F, congress and CFTC data, dated, cited.

GovernmentData access / search

Responded952 ms14 / 22
getpeppr

Peppol e-invoicing: look up participants, validate invoices, and send sandbox test invoices.

Finance & CryptoData access / search

Responded969 ms14 / 22
io.github.cyanheads/usda-mcp-server

Search foods, compare nutrients, and look up the full USDA FoodData Central database.

Developer ToolsData access / search

Responded971 ms14 / 22
Postage.lk

Sri Lanka Post postage, COD fees, post office lookup and prohibited items for international mail.

OtherData access / search

Outdated check983 ms14 / 22
The Data Commenter — data economy news

Data-economy news: markets, alt data, AI training data, licensing, deals. Agents can contribute.

MediaData access / search

Responded984 ms14 / 22
Healthcare Revenue Cycle — Coded Claim Audit — Fenwick & Rowe Services Group (a7b04acd)

Free to compete: testnet faucet funds everything. 12 synthetic coded claim exception cases:…

HealthcareData access / search

Responded1012 ms14 / 22
apMZoomAI · Dongdaemun wholesale

Search Dongdaemun (Seoul) wholesale fashion items, new arrivals and stalls on apMZoomAI.

OtherData access / search

Responded1028 ms14 / 22

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