MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

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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.

Connect your agent

1504 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
Traceproof

Search security findings and contribute versioned, evidence-backed reproduction reports.

OtherData access / search

Outdated check120 ms12 / 22
Compliance Tools

Pay-per-call compliance lead scanners with free MCP discovery and x402 payments.

Finance & CryptoPayments & trading

Outdated check125 ms12 / 22
TrustLayer

Agent reputation scoring: trust scores, Sybil detection, cross-chain identity for 133K+ agents

Developer ToolsCode & DevOps

Outdated check137 ms12 / 22
ArcadeOps Public Discovery

Read-only ArcadeOps discovery for developer docs, OAuth, OpenAPI and synthetic sandbox.

Developer ToolsCode & DevOps

Outdated check141 ms12 / 22
dotsy

Build and publish static sites on dotsy with draft-first MCP tools, OAuth Connect, and API keys.

Developer ToolsCode & DevOps

Responded148 ms12 / 22
AIBITIOUS 404 LAB - Ten Free Agent Tools

Ten free agent tools for CVE evidence, JSON/CSV checks, invoice math, API/MCP lint and data drift.

Finance & CryptoPayments & trading

Outdated check148 ms12 / 22
Pasportoo Website Audit

Human-reviewed audit of a public website: bugs, passive security checks, UX. Order link for owners.

Developer ToolsCode & DevOps

Outdated check153 ms12 / 22
openfang-rail

Deterministic banking, LEI, VAT, SWIFT & compliance checks via MCP with signed XDR-1 receipts.

Finance & CryptoCode & DevOps

Outdated check153 ms12 / 22
net.bigfloppy.vibescan/vibescan

Free security scan for AI-written GitHub repos: leaked keys, .env, eval, SQLi, CORS.

Developer ToolsCode & DevOps

Outdated check155 ms12 / 22
Approval Link — Quotes and Proofs

Quote/proof approval drafts. Free; creator account + OAuth: https://kurodalab.com/en/approval-link/

OtherOther

Outdated check156 ms12 / 22
Patchwire

Hourly security advisories for JS, AI and web3 packages: ranges, fixes and exploit conditions.

OtherOther

Outdated check181 ms12 / 22
MCPFax Dev Package Intelligence

Is this dependency current, licensed, deprecated, or already carrying a CVE?

SecurityMonitoring & observability

Outdated check207 ms12 / 22
io.github.venomseven/nslookup

DNS lookups, health reports, SSL certs, security scans, GEO scoring, uptime checks

Developer ToolsMonitoring & observability

Outdated check219 ms12 / 22
Quality Island

QA and IT outsourcing, software, security and WCAG testing, QA trainings and QA talent from Poland.

Developer ToolsCode & DevOps

Outdated check261 ms12 / 22
io.github.ark-forge/mcp-eu-ai-act

EU AI Act + GDPR compliance scanner. One call, no arguments, 10 seconds. 22 AI frameworks detected.

Developer ToolsCode & DevOps

Outdated check292 ms12 / 22
com.obeliskgate/trust-tools

Website security ratings, token verification, and tamper-evident ledger heads from Obelisk Gate.

Finance & CryptoPayments & trading

Outdated check308 ms12 / 22
Utility Matrix

Free browser-based calculators and analyzers for cloud cost, DevOps, security, and data governance.

Developer ToolsCode & DevOps

Outdated check316 ms12 / 22
MagicON RF Design Engines

TX/RX/T-R chains, OTA link, radar, PCB filters, patch antennas, stackup, thermal, PDN, compliance.

Developer ToolsCode & DevOps

Outdated check385 ms12 / 22
FixedIn

Actively exploited? End of life? Which version fixes it? CVE verdicts for server software.

SecurityMonitoring & observability

Outdated check386 ms12 / 22
El Pujante — Subastas públicas de España

Spanish public property auctions (judicial, AEAT, Social Security): daily data and risk flags.

OtherOther

Outdated check397 ms12 / 22
io.github.robertoyanguas-ops/domain-osint-mcp

Inspects live IPv4/IPv6 DNS resolution, TLS certificate issuer/expiry, and HTTP security grade.

Developer ToolsCode & DevOps

Outdated check398 ms12 / 22
io.github.robertoyanguas-ops/assay

A2A & MCP Pre-Flight Security: SHA-256 tool schema rug-pull detection and liveness grades.

TravelCode & DevOps

Outdated check400 ms12 / 22
io.github.robertoyanguas-ops/github-audit-mcp

Evaluates any GitHub repository for license risk, maintenance velocity, stars/forks, and security.

Developer ToolsCode & DevOps

Outdated check402 ms12 / 22
API Change Feed

Breaking changes, deprecations and security fixes for 38 popular APIs/SDKs. Paid per call via x402.

Finance & CryptoPayments & trading

Outdated check403 ms12 / 22

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