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

7916 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
Needhave

Needs and haves for agents. No signup, no key. Agents post and reply over MCP.

Developer ToolsCode & DevOps

Outdated check123 ms14 / 22
RigBase

Measured local-LLM tok/s on home AI rigs. Search builds, can-it-run, best GPU; sourced + linked.

Developer ToolsData access / search

Outdated check182 ms14 / 22
AnswerRail AEO, Schema.org & /llms.txt Audit MCP

6-category AI readiness, Schema.org, robots.txt, /llms.txt & 25k-token audit + auto-fix MCP server

Developer ToolsCode & DevOps

Outdated check214 ms14 / 22
Diogenes Agent Guardrails & Sandbox MCP

Autonomous agent guardrails, bash sandboxing, MCP rugpull diffing & prompt firewalls.

Developer ToolsCode & DevOps

Outdated check219 ms14 / 22
MasaDeals

Verified promo codes for shopping agents — ranked by checkout success only.

Finance & CryptoPayments & trading

Outdated check240 ms14 / 22
Agent Index — GRC & Compliance

GRC & compliance directory for AI assistants: audit firms and GRC/security AI agents. Read-only.

Developer ToolsCode & DevOps

Responded243 ms14 / 22
Tseha

Serves your design system and coding standards to coding agents, so they stop guessing.

Developer ToolsCode & DevOps

Responded267 ms14 / 22
Etuki FinOps & LLM Pricing Oracle

Cryptographic 563-leaf LLM rate oracle, context-cliff auditor, and prompt cache optimizer.

Developer ToolsCode & DevOps

Responded269 ms14 / 22
369 Meter — pay-per-call APIs for agents (x402)

Pay-per-call APIs for agents: text analysis, game facts, translation QA, hook scoring via x402.

Developer ToolsCode & DevOps

Outdated check388 ms14 / 22
APEX on Arc

Arc for agents: token prices, rug checks (holders, dev pulls), launch exits, free USDC, paid APIs.

Finance & CryptoPayments & trading

Responded399 ms14 / 22
WhiteMagic — governed local memory for agent continuity

Governed local-first memory and continuity for AI agents — signed receipts, optional hosted lane.

Developer ToolsCode & DevOps

Outdated check540 ms14 / 22
GrantSonar

Search verified-open US grants (federal, state, foundation). Read-only MCP for AI agents.

GovernmentCode & DevOps

Responded647 ms14 / 22
Mycel Agent Hire MCP

Mycel: hire AI agents over MCP. Keyless discovery, self-service agent keys, pay per hire.

Developer ToolsCode & DevOps

Outdated check655 ms14 / 22
PabandiOS

Trust and settlement for AI agents: portable attestations, escrow, x402/USDC payments on Solana.

Finance & CryptoPayments & trading

Responded663 ms14 / 22
dfwmetro.net directory

Verified DFW home-services directory. AI agents submit listings and find bookable pros.

Developer ToolsCode & DevOps

Outdated check726 ms14 / 22
AisleNode Local Commerce (Meta Muse & Claude MCP)

Connect Meta Muse and Claude agents to live local retail store shelves and direct checkout.

Finance & CryptoPayments & trading

Responded972 ms14 / 22
Agent Kiosk — 23-in-1 B2A Intelligence, Action & x402 API

23-in-1 MCP server: EVM tx simulator, funding rate arb, macro radar, swap calldata & security.

Developer ToolsPayments & trading

Outdated check1058 ms14 / 22
Actora — Agent Identity, Subscriptions & A2A

ERC-8004 agent identity, on-chain subscriptions, reputation, A2A tasks and chat over 53 tools.

Finance & CryptoPayments & trading

Outdated check1124 ms14 / 22
Actora Platform — Agent Publishing, Subscriptions & A2A

Actora developer tools: ERC-8004 identity, subscriptions, listings, A2A, reputation.

Developer ToolsPayments & trading

Outdated check1173 ms14 / 22
Fara

FARA (Foreign Agents Registration Act) MCP.

Developer ToolsCode & DevOps

Outdated check6284 ms14 / 22
Muhu island dialect of Estonian — dictionary and RAG

Muhu island dialect of Estonian, Estonia. RAG, dictionary, newspaper, book and audio references.

MediaAI / LLM tooling

Responded41 ms13 / 22
Swapper - XMR to USDC swaps

Swap Monero (XMR) <-> native USDC on Arbitrum One. No account or API key required. For AI agents.

Finance & CryptoPayments & trading

Responded45 ms13 / 22
com.openwakeword/wake-word-training

Train custom wake words from your agent: estimator, GPU training, benchmarks. Card or crypto.

Finance & CryptoPayments & trading

Responded53 ms13 / 22
SuperSkill Registry

Find, inspect and install reviewed reusable AI-agent capabilities from superskill.sh.

Developer ToolsCode & DevOps

Outdated check54 ms13 / 22

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