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.

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5073 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
VibeScale

Pre-launch checks for AI-built apps: leaked keys, Supabase RLS gaps, browser-exposed env vars.

Developer ToolsDatabase

Responded472 ms12 / 22
BidProwl

US government surplus auctions: search live lots by ZIP radius, sold prices and Flip Scores.

GovernmentData access / search

Responded474 ms12 / 22
Clinical Trial Tracker

Search and monitor ClinicalTrials.gov and EU trial registry records, with trial change tracking and

HealthcareCode & DevOps

Responded477 ms12 / 22
Garage Sales Search

Find garage sales and publish seller-verified listings directly from AI assistants.

OtherData access / search

Responded491 ms12 / 22
Forage Shopping

AI shopping comparison — search 50M+ products, compare prices, find deals

E-commerceCode & DevOps

Responded494 ms12 / 22
LabTestSuperstore

Read-only U.S. lab-test catalog, collection-site search, and reference-range context.

Developer ToolsCode & DevOps

Responded494 ms12 / 22
Vikenda — what's on in Niagara-on-the-Lake

Accuracy-first what's-on guide for Niagara-on-the-Lake: verified events, venues, search, planning.

OtherData access / search

Responded502 ms12 / 22
SpecProof

SpecProof: Search standards specs with MCP-ready precision.

Developer ToolsData access / search

Responded502 ms12 / 22
AI Architectures

Search ~500 free house plans and have AI-drafted CAD floor plans (DXF, DWG, PDF) drawn and changed.

Developer ToolsData access / search

Responded504 ms12 / 22
SourceToMe

Search and cite passages from a vetted, rights-cleared reference library.

Developer ToolsCode & DevOps

Responded507 ms12 / 22
Dom Kozak: pDOOH and Built for MENA

Search Dom Kozak's Built for MENA podcast and pDOOH 101/201 lessons, with quotes and source links.

EducationData access / search

Responded508 ms12 / 22
AI Search Kit

Audits AI-crawler access, structured data and llms.txt on a site, and drafts the fixes.

OtherBrowser & web scraping

Responded512 ms12 / 22
HostVeritas Hosting Research

Search and compare public hosting-provider facts with sources and explicit unknowns.

OtherData access / search

Responded519 ms12 / 22
Ask Bob: Moneytalk Archive

Search reviewed Moneytalk topic and date metadata through September 30, 2018.

Developer ToolsCode & DevOps

Responded521 ms12 / 22
Applysent

Search jobs, preview each application and apply with your OK on Workday, Greenhouse, Ashby and more.

OtherData access / search

Responded522 ms12 / 22
LossHQ Directory

Search certified insurance appraisers and umpires by state, city, role and specialty.

OtherData access / search

Responded527 ms12 / 22
Yeow business index

Search 6.2M US businesses and nonprofits (SBA PPP, IRS Pub 78). Sourced fields. No personal data.

OtherData access / search

Responded527 ms12 / 22
Yarrow

Shared fix library for coding agents: search fixes other agents found, report what worked.

Developer ToolsCode & DevOps

Responded531 ms12 / 22
AGORA

Q&A forum where AI agents ask each other for help: search, read, post, reply, inbox.

ProductivityCommunication & messaging

Responded533 ms12 / 22
ScholarFetch

Multi-engine scholarly research server for search, traversal, full text, and reading lists.

Developer ToolsCode & DevOps

Responded534 ms12 / 22
Cubbie Club Offers

Baby & kids brand discount codes from Cubbie Club. Search by brand or keyword for a deal link.

OtherData access / search

Responded537 ms12 / 22
BrinkerAdvisor Reading Guide

Search factual investing-book metadata and browse BrinkerAdvisor reading paths.

Developer ToolsCode & DevOps

Responded537 ms12 / 22
cn.pianam/hot-trending-mcp

MCP server for real-time Chinese internet hot-search and trending boards across major platforms.

Developer ToolsData access / search

Responded539 ms12 / 22
Tangy Limes

Funny singing video ecards from a photo: search cards, get prices, buy card packs, request cards.

MediaCode & DevOps

Responded539 ms12 / 22

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