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

7958 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
RegexForge

Deterministic regex synthesis from labeled examples. Zero LLM, proof matrix, backtracking audit.

Developer ToolsCode & DevOps

Responded59 ms11 / 22
aeX402 — Cross-Chain DeFi MCP: LINQ, AMM, Bridge, AI

Agent MCP for DeFi: cross-chain LINQ fan-out, AMM quotes/swaps, bridge, AI. Solana+EVM. Free+x402.

Finance & CryptoPayments & trading

Responded67 ms11 / 22
Agent Receipts

Issue & verify signed (ed25519), hash-chained, timestamped provenance receipts for agent actions.

Developer ToolsCode & DevOps

Responded68 ms11 / 22
OmniToolCalc LLM Token & Cloud FinOps Suite

Estimate 2026 enterprise LLM API token costs, prompt caching savings, and developer benchmarks.

Developer ToolsAI / LLM tooling

Responded71 ms11 / 22
net.brazilian-bikinis/mcp

Brazilian Bikinis swimwear catalog and orders via AI agents

Developer ToolsCode & DevOps

Responded81 ms11 / 22
io.github.raclarke1/hiveposts

Agent library of verified fixes under permanent URLs.

Developer ToolsCode & DevOps

Responded91 ms11 / 22
MERX - TRON Resource Exchange

TRON energy exchange for AI agents. 54 tools, 30 prompts, 21 resources. A2A + ACP.

Developer ToolsCode & DevOps

Responded136 ms11 / 22
Money-Engine x402 Research

Free agent discovery + paid x402 research (outline 0.01 / brief 0.02 USDC Base).

Finance & CryptoPayments & trading

Responded139 ms11 / 22
Forge Arena — Agent Wilds

Autonomous agents create, compete, converse, vote, and build reputation in a bounded public world.

Developer ToolsCode & DevOps

Responded142 ms11 / 22
Responded153 ms11 / 22
net.bigfloppy.page2md/page2md

Turn any webpage into clean Markdown for LLM/agent pipelines. Free tier; paid 1 USDC = 1000 req.

Finance & CryptoFile & docs

Responded171 ms11 / 22
Responded172 ms11 / 22
FairAgent

Live state and unsigned mint/claim tx builder for FairAgent AI-agent NFTs on BNB Chain.

Developer ToolsCode & DevOps

Responded177 ms11 / 22
Responded194 ms11 / 22
ZenVault

Wake-ups, webhook inboxes, TTL memory, watches and human approval for agents. Paid per call.

ProductivityCommunication & messaging

Responded210 ms11 / 22
io.github.f-tiger/verified-ai-free-tiers

Verified AI free tiers plus source-backed agent and MCP discovery monitoring.

Developer ToolsMonitoring & observability

Responded242 ms11 / 22
io.github.putput-io-dev/putput-mcp

File uploads for AI agents. Upload, list, and manage files. No signup required.

Developer ToolsCode & DevOps

Responded244 ms11 / 22
JSONShelf

Deterministic JSON repair, validate, example-gen, schema-coerce for agents. Zero LLM, sub-10ms.

Developer ToolsCode & DevOps

Responded256 ms11 / 22
Hookjar

Public webhook inboxes for agents. Receive OAuth redirects, payment callbacks and CI notifications.

Finance & CryptoCommunication & messaging

Responded277 ms11 / 22
Spotby Business Registry

Find local businesses with owner-verified hours, services, prices and contacts, for AI agents.

OtherOther

Responded302 ms11 / 22
com.factstable/factstable

Verified fact packs for agents: statutory rates, passenger rights, consumer law — cite-or-refuse.

LegalKnowledge & memory

Responded311 ms11 / 22
Evidence-granularity audit

Per-claim evidence-granularity verdicts for agent listings, before you transact.

Developer ToolsCode & DevOps

Responded315 ms11 / 22
Mass-Casualty Triage for Agent Fleets

Salvageability triage for agent fleets in a declared mass-failure mode.

Developer ToolsCode & DevOps

Responded325 ms11 / 22
The agent tool formulary: certified-equivalent substitution

Certified-equivalent tool substitution: probe-certified ratings, signed receipts, DAW, prior auth.

Developer ToolsCode & DevOps

Responded326 ms11 / 22

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