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

41819 servers

Ordered by checks passed
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
io.github.kody-w/rapp-domains

Check and price up to 20 domain names at once; agents can register them, paying per request.

Developer ToolsCode & DevOps

Responded556 ms15 / 22
NotWorking

Downdetector for AI agents: stop paying for retries that can't succeed. Check once, then report.

Developer ToolsCode & DevOps

Responded556 ms15 / 22
Supericons

Multilingual semantic SVG icon search with previews for AI coding agents. 20,000+ icons.

Developer ToolsCode & DevOps

Responded557 ms15 / 22
XipFax

Fax a form from your AI assistant. XipFax finds the right IRS fax number and shows the price first.

OtherOther

Responded557 ms15 / 22
com.aiengineerprofessional/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Responded557 ms15 / 22
AI Trainer Jobs

Find remote AI trainer jobs and compare the companies that hire for them.

OtherOther

Responded558 ms15 / 22
aloha.fyi Hawaii

Read-only Hawaii MCP: 2,500+ tours, 600+ restaurants, events, weather, day itineraries, 4 islands.

Developer ToolsCode & DevOps

Responded559 ms15 / 22
PepBank Peptide Research MCP: BPC-157, Retatrutide and Tirzepatide Studies and Trials

Studies and clinical trials for BPC-157, retatrutide, tirzepatide and 160+ peptides, with sources.

HealthcareData access / search

Responded559 ms15 / 22
Tariff Monitor: US Import Duty & HTS Lookup

US import tariffs: classify to HTS code, stacked rate (MFN+301+232+forced-labor), compare origins.

Developer ToolsCode & DevOps

Responded561 ms15 / 22
Mazza Group AI APIs

23 pay-per-call AI APIs for agents: x402, USDC on Base, no API keys.

Finance & CryptoPayments & trading

Responded561 ms15 / 22
Cron Translator

Explain cron expressions in English, list next run times, and catch scheduling gotchas.

OtherAutomation & workflows

Responded561 ms15 / 22
AX Audit MCP Server

Scan any website for AI-agent readiness: 0-100 score, grade, and agent-simulation audit.

Developer ToolsCode & DevOps

Responded561 ms15 / 22
com.boothcheck/boothcheck

What a stock price is betting on: implied growth, duration, and margin, read from SEC filings.

Finance & CryptoPayments & trading

Responded562 ms15 / 22
Bezal — Local Business Intelligence for AI Agents

Search 7,000+ local service businesses across America by category, location, or keyword.

Data & AnalyticsData access / search

Responded563 ms15 / 22
io.github.itsryanarmani/creditunions

Which credit union can you join? Compare eligibility.

Developer ToolsCode & DevOps

Responded563 ms15 / 22
ai.upgradeagent/upgrade-agent

Quote, bid and confirm travel upgrades: eligibility, bid range, place/modify/cancel, instant buy.

TravelData access / search

Responded563 ms15 / 22
Say It Again

AI UGC videos of your store's products: read a product, write 3 scripts, make the video.

MediaAI / LLM tooling

Responded564 ms15 / 22
io.github.cyanheads/gutenberg-mcp-server

MCP server for Project Gutenberg: 78,000+ public-domain ebooks with full plain-text retrieval.

Developer ToolsCode & DevOps

Responded564 ms15 / 22
io.github.HappyMealSteak/apizone

Real-time status & uptime monitoring for 294 popular APIs — is it down, and how reliable?

Developer ToolsMonitoring & observability

Responded564 ms15 / 22
Tektolo

Deterministic, source-cited rental property tools: turnover estimates and deposit rules by US state.

Real Estate & PropertyData access / search

Responded565 ms15 / 22
GribStream Weather MCP

NOAA and ECMWF weather forecast MCP for discovery, validation, and GribStream OAuth queries.

Data & AnalyticsData access / search

Responded565 ms15 / 22
Nutrition MCP

USDA FoodData Central nutrition data: search foods, compare macros, and analyze meals.

Developer ToolsCode & DevOps

Responded566 ms15 / 22
Conduit Agentic Commerce

Search multi-merchant supply, checkout, and track orders via MCP.

Finance & CryptoPayments & trading

Responded566 ms15 / 22
io.github.kody-w/raptr-names

Name a business or project; check which domains and GitHub names are free, with prices.

Developer ToolsCode & DevOps

Responded566 ms15 / 22

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