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.

Connect your agent

1497 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
Excession Labs: site search and security test requests

Search excessionlabs.ai, the site of Excession Labs, a security lab, and request a security test.

OtherData access / search

Responded71 ms16 / 22
Feldspar free repository security scan

Free deterministic security scan of public git repos: OSV.dev vulnerable deps, secrets, config lint.

Developer ToolsCode & DevOps

Responded35 ms15 / 22
sigelo

One identity an AI agent owns: proves who it is offline, keeps its reputation, pays, messages agents

Developer ToolsCode & DevOps

Responded58 ms15 / 22
pkgxray

Pre-install security scans for npm packages, MCP servers, and AI agents with cited verdict evidence.

Developer ToolsCode & DevOps

Responded66 ms15 / 22
CheckChinaTransit — China 24/240-Hour Visa-Free Transit Compliance Engine

Verify China 240-hour (formerly 144h) visa-free transit eligibility, ports & third-country routes.

Developer ToolsCode & DevOps

Responded66 ms15 / 22
Electronic Compliance Objects (49 markets)

Each market's disclosure regime as one sourced, signed object, with the issuer's ACM-68000 signal.

Developer ToolsCode & DevOps

Responded68 ms15 / 22
ACM-68000 signals for listed issuers

The ACM-68000 signal of a listed security in its home market: trading, not listed, read the filing.

Finance & CryptoPayments & trading

Responded79 ms15 / 22
AI application security research and assessments

Read AI security guides and lab research, and request an LLM or AI agent security assessment.

Developer ToolsAI / LLM tooling

Responded88 ms15 / 22
Shared Forest

Plant or sponsor trees in a shared forest that grows from its traffic. Sponsoring uses OAuth.

Developer ToolsCode & DevOps

Responded89 ms15 / 22
AgentEconomy Compliance API

Paid KYC, AML, and regulatory risk assessment over MCP via x402 USDC micropayments on Base.

Finance & CryptoPayments & trading

Responded93 ms15 / 22
Pentest requests, security headers checker, guides

Request a penetration test, grade a website's HTTP security headers, and search pentest guides.

SecurityData access / search

Responded96 ms15 / 22
Stackhal

Outside-in DNS, email security, SEO, GEO and app-link checks plus developer utilities.

Developer ToolsCommunication & messaging

Responded115 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

Responded145 ms15 / 22
MusedIn

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

Developer ToolsCode & DevOps

Responded146 ms15 / 22
IntoDNS.ai DNS & Email Security Scanner

DNS and email security: check SPF, DKIM, DMARC, DNSSEC, DANE and build the records. 45 tools.

ProductivityCommunication & messaging

Responded156 ms15 / 22
Gnosis Memory

Persistent memory and vector search for AI agents. Hosted, OAuth-protected via Google sign-in.

Developer ToolsAI / LLM tooling

Responded166 ms15 / 22
run.zero

Deploy apps, APIs and Postgres from your AI agent. EU PaaS hosted in Germany, OAuth sign-in.

Developer ToolsDatabase

Responded173 ms15 / 22
agenttool

Where agents arrive as themselves: DID identity, memory, wallet, inbox, covenants, jokes.

Finance & CryptoPayments & trading

Responded197 ms15 / 22
Agent Services (x402): compliance, company, procurement

27 pay-per-call agent tools (KYB, VAT, sanctions, tenders, data). Pays via x402; holds no funds.

Developer ToolsCode & DevOps

Responded203 ms15 / 22
VibeDeploy

Deploy AI-built sites and apps to EU hosting from your AI agent. OAuth sign-in, 14-day free trial.

Developer ToolsCode & DevOps

Responded212 ms15 / 22
VoiceLogPro

Construction daily-log generation, jurisdiction compliance requirements, construction FAQs.

LegalCode & DevOps

Responded312 ms15 / 22
Spala Public MCP

Discovery, OAuth, project operations, and exact project MCP handoff for Spala backend projects.

Developer ToolsCode & DevOps

Responded320 ms15 / 22
MCP security checks — WARDEN and HISTOR

Scan MCP tool definitions for poisoning, look up server history, count tool-list tokens. Free.

Developer ToolsData access / search

Responded327 ms15 / 22
VulKill Security

Autonomous AppSec & DAST scanner across 12 security domains (260+ controls) with 3-Layer Triage.

Developer ToolsCode & DevOps

Responded346 ms15 / 22

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