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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40893 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
Agent Tools MCP

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

Developer ToolsCode & DevOps

Responded142 ms15 / 22
SCVD General Store

Evidence observatory: x402/MPP inspection, signed receipt checks and settlement attestations.

Finance & CryptoPayments & trading

Responded143 ms15 / 22
JobNimbus MCP by usefulapi

Manage JobNimbus contacts, jobs, tasks, estimates and invoices from chat.

Finance & CryptoPayments & trading

Responded143 ms15 / 22
Briox MCP by usefulapi

Read invoices, journals and accounts; create customers, items and unposted invoices in Briox.

Finance & CryptoPayments & trading

Responded143 ms15 / 22
SimplyUtils

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

Developer ToolsCode & DevOps

Outdated check143 ms15 / 22
Nifra docs

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

Developer ToolsCode & DevOps

Outdated check143 ms15 / 22
Digital Gemology: gemstone and diamond cut library

Gemstone and diamond cuts: ray-traced brilliance, fire and sparkle in 26 gems, 3D and faceting files

OtherOther

Outdated check143 ms15 / 22
publicdata.au

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

GovernmentData access / search

Outdated check143 ms15 / 22
Cellarion Wine Registry

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

OtherData access / search

Outdated check144 ms15 / 22
Eventee MCP by usefulapi

Read an Eventee event's program, participants and reviews; create sessions, speakers; invite.

Developer ToolsCode & DevOps

Responded145 ms15 / 22
Bind ERP MCP by usefulapi

Read Bind ERP clients, products, inventory, invoices, orders; create prospects, clients, orders.

Finance & CryptoPayments & trading

Responded145 ms15 / 22
Frankfurter

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

Developer ToolsCode & DevOps

Outdated check145 ms15 / 22
NBA Prop Lab

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

Developer ToolsCode & DevOps

Outdated check145 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

Outdated check145 ms15 / 22
FPV-DB

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

Developer ToolsCode & DevOps

Outdated check145 ms15 / 22
pretix MCP by usefulapi

Read pretix events, tickets and orders; check attendees in or out with your own account.

Developer ToolsCode & DevOps

Responded146 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

Outdated check146 ms15 / 22
AgentGate

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

Developer ToolsCode & DevOps

Outdated check146 ms15 / 22
MusedIn

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

Developer ToolsCode & DevOps

Outdated check146 ms15 / 22
Ecommerce Leads

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

E-commerceData access / search

Outdated check146 ms15 / 22
FindA.Sale

Find yard sales, garage sales, auctions, flea markets and resale shops, and search items for sale.

E-commerceData access / search

Responded147 ms15 / 22
NEMO x402 Micro-Services

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

Finance & CryptoPayments & trading

Outdated check147 ms15 / 22
Bonafido: Business Domain Verification API

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

Developer ToolsCode & DevOps

Outdated check147 ms15 / 22

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