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

7868 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
operant-mcp

Read-only MCP server for the OPERANT AI operating-agent calibration benchmark.

Developer ToolsCode & DevOps

Outdated check78 ms14 / 22
com.day1work/day1work

Human-and-agent marketplace: find work, post tasks, bid, chat, request payments.

Finance & CryptoPayments & trading

Responded79 ms14 / 22
Date Math

Date/time math for agents: business days, holidays, time zones, cron, RRULE. 25 free calls/day.

Developer ToolsCode & DevOps

Outdated check79 ms14 / 22
BenchLeader

Daily LLM leaderboard from independent benchmarks: ranks, scores, prices, speed and comparisons.

OtherAI / LLM tooling

Responded80 ms14 / 22
io.github.f-tiger/agiscorecard-web3-route

Plan LLM fallback sequences from supplied cost, quality and latency assumptions; no live execution.

Developer ToolsCode & DevOps

Responded80 ms14 / 22
Open Components

Guidelines for UI components with a perfect UX, DX and AX, whether humans or AI agents write them.

Developer ToolsCode & DevOps

Outdated check80 ms14 / 22
THIRI Chord Intelligence

Deterministic music theory for agents: analyze, voice, reharmonize, conduct — computed, not guessed

MediaAI / LLM tooling

Outdated check80 ms14 / 22
Domain & Company Intel MCP

Domain intel for AI agents: RDAP registration, DNS, email deliverability, tech stack.

ProductivityCommunication & messaging

Responded81 ms14 / 22
agent-audit + page-read (x402)

Pay-per-call page reader, quote check, link check and x402 seller audit. USDC on Base via x402.

Finance & CryptoPayments & trading

Outdated check81 ms14 / 22
Tamer Prompt Marketplace

Prompt marketplace for AI agents: browse and buy prompts with x402 (USDC on Base).

Finance & CryptoPayments & trading

Outdated check82 ms14 / 22
Package Intel MCP

Package intelligence for AI agents across npm, PyPI, crates.io and deps.dev. No API keys.

Developer ToolsCode & DevOps

Responded83 ms14 / 22
UNPKG

Live npm and UNPKG data for AI agents: resolution, audits, import maps, malware/CVE checks.

SecurityCode & DevOps

Responded83 ms14 / 22
Knowledge for Agents

Search real problems, solutions, failed approaches and observed outcomes shared by AI agents.

Developer ToolsData access / search

Outdated check83 ms14 / 22
Economy Intel MCP

Macro data for AI agents: GDP, inflation, unemployment and more (World Bank, US BLS). No keys.

Finance & CryptoPayments & trading

Responded84 ms14 / 22
Smallfire Lab public-records checks

Free read-only lookups of Oregon contractor licenses and FDA food recalls for AI agents. No key.

GovernmentData access / search

Responded85 ms14 / 22
ClaraConverts

Install Clara, an AI agent website visitors talk to by voice or text. Free trial, no card.

Developer ToolsCode & DevOps

Responded85 ms14 / 22
Agent Standings check

Live status and 30-day reliability of public MCP servers, from independent hourly probes.

Developer ToolsCode & DevOps

Responded85 ms14 / 22
io.github.f-tiger/agiscorecard-web3-evidence

Review agent task evidence with sample deduplication, version filters and uncertainty intervals.

Developer ToolsCode & DevOps

Responded85 ms14 / 22
AETHER by ANGELS

Points AI agents to Agentify (free agent search engine) and AgentDNA (company catalogs for agents).

Developer ToolsData access / search

Responded86 ms14 / 22
zRev AI

Grade any llms.txt, cold-read a homepage, run a B2B GTM ROI model, get a GTM diligence checklist.

OtherOther

Responded86 ms14 / 22
Pixel Agent

Convert images to PNG, JPEG, WebP, or AVIF through one public remote MCP tool.

MediaCode & DevOps

Outdated check86 ms14 / 22
ANIME INTELLIGENCE / AI PURCHASE INTELLIGENCE

AI commerce intelligence for anime, industrial parts, replacements, sourcing and agent buying.

MediaCode & DevOps

Outdated check87 ms14 / 22
agent-web — URL to LLM-ready markdown: a polite, robots-respecting web page reader (free)

URL to clean markdown for LLMs: a polite, robots.txt-respecting web reader. Free, no API key

Developer ToolsFile & docs

Outdated check87 ms14 / 22
Ophis MCP

Gasless, MEV-protected onchain token swaps for AI agents on 14 EVM chains, built on CoW Protocol.

Finance & CryptoPayments & trading

Outdated check87 ms14 / 22

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