MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

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

18179 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
io.github.pscale-commons/pscale-biome

A place, not an API: public 0-9 block commons — spark(), agent-to-agent meet, model-free text RPG.

Developer ToolsCode & DevOps

Responded185 ms14 / 22
gtm.help

Your go-to-market plan, plays and opportunities from gtm.help, inside any AI agent.

Developer ToolsCode & DevOps

Responded185 ms14 / 22
EU Funding Calls Search

Find open and upcoming EU grant calls by topic. $0.02/call via x402.

Developer ToolsCode & DevOps

Responded187 ms14 / 22
VirtualFlyBrain

MCP server for Drosophila neuroscience data from VirtualFlyBrain

Developer ToolsCode & DevOps

Responded187 ms14 / 22
EU Tender Award Winners (TED)

See who wins EU public contracts (TED award notices). $0.03/call via x402.

LegalCode & DevOps

Responded188 ms14 / 22
Prompt Injection Scanner

Check text before your agent reads it: hidden instructions, invisible text and links that leak data.

Developer ToolsCode & DevOps

Responded188 ms14 / 22
Fify

Turn grounded AI answers into trusted comparisons, plans, timelines, and decision views.

Developer ToolsCode & DevOps

Responded188 ms14 / 22
Cincopa MCP by usefulapi

List assets and galleries, edit their metadata, upload from URLs and delete media in Cincopa.

Developer ToolsCode & DevOps

Responded190 ms14 / 22
AgentFeed

Fetch any RSS/Atom feed as clean JSON or extract article text from any URL. Built for AI agents.

Developer ToolsCode & DevOps

Responded191 ms14 / 22
Firmaradar

Norwegian company intelligence: ownership, roles, financials, risk, KYC/AML/PEP (multi-source)

Developer ToolsCode & DevOps

Responded194 ms14 / 22
Batch Sanctions Screening

Screen up to 100 names vs sanctions and US export lists. $0.50/batch via x402.

Developer ToolsCode & DevOps

Responded197 ms14 / 22
EU Public Tender Search (TED)

Find open EU public tenders (TED) to bid on. $0.03/call via x402.

Developer ToolsCode & DevOps

Responded197 ms14 / 22
SEC EDGAR Company Lookup

Get a US company's SEC filings and headline financials from EDGAR. $0.002/call via x402.

Developer ToolsCode & DevOps

Responded198 ms14 / 22
Financial Evidence

Read-only public financial evidence from LiquiLens, Undertow, Seiche and Palimpsest.

Developer ToolsCode & DevOps

Responded198 ms14 / 22
Joinerycalc

Exact joinery layouts for agents. Dovetails: tail and pin widths, positions, angles, router template

Developer ToolsCode & DevOps

Responded199 ms14 / 22
Supplier Check (VAT, EORI, Company, Sanctions, Export)

Check a supplier in one call: VAT, EORI, registry, sanctions, export lists. $0.25/call via x402.

Developer ToolsCode & DevOps

Responded201 ms14 / 22
EU EORI Number Check

Verify EU EORI numbers in the official EC register before shipping. $0.01/call via x402.

Developer ToolsCode & DevOps

Responded201 ms14 / 22
Drug Label, Recall & Adverse Event Check (openFDA)

FDA label warnings, recalls and adverse event counts for a drug. $0.003/call via x402.

Developer ToolsCode & DevOps

Responded201 ms14 / 22
IronShard Object Storage Sandbox

Create a free sandbox object storage bucket; upload, download, list, inspect, and delete objects.

Developer ToolsCode & DevOps

Responded202 ms14 / 22
com.babyagecalculator/baby-age

Free hosted MCP server by Baby Age Calculator: exact baby age, zodiac, and milestone dates. No key.

Developer ToolsCode & DevOps

Responded204 ms14 / 22
Context Relay

Compact, citation-verifiable public web context for AI agents, paid per use with x402.

Developer ToolsCode & DevOps

Responded205 ms14 / 22
The JQ API

Free hosted jq MCP server for inline JSON, public HTTPS URLs, and reusable 15-minute uploads.

Developer ToolsCode & DevOps

Responded205 ms14 / 22
io.github.newspacemarket-com/mrd

Spacecraft component specs from vendor datasheets: search, digests, facts, gaps, budgets, bus design

Developer ToolsCode & DevOps

Responded205 ms14 / 22
A/B Test Sample Size Calculator MCP

Exact A/B test sample size, duration, z-test, chi-square, Fisher-Freeman-Halton and peeking risk.

Developer ToolsCode & DevOps

Responded205 ms14 / 22

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