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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4927 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
fixfind.at – local offers in Austria

Products and services from Austrian businesses and shops: search by keyword, location and price.

E-commerceData access / search

Responded155 ms14 / 22
FiveM Docs

Search and read independent FiveM development guides with citations. Free, read-only, no API key.

Developer ToolsCode & DevOps

Outdated check155 ms14 / 22
Referral Flooring

Referral Flooring, Hamilton ON flooring installer: business facts, site search, quote requests.

OtherData access / search

Responded158 ms14 / 22
JYOTINT Sealed Forecasts

Bitcoin-anchored sealed-forecast record: search, grades, calibration, luck test. Read-only, no key.

Finance & CryptoPayments & trading

Responded158 ms14 / 22
Commonkite: Free Image Search API, Creative Commons & CC0

Commonkite: free-to-use CC/public-domain images with license + credit line.

MediaCode & DevOps

Outdated check158 ms14 / 22
IA-Asso.fr — French Associations Registry

Search 1.26M+ active French associations (official RNA registry, 10 tools, premium & RUP filters)

Developer ToolsCode & DevOps

Responded159 ms14 / 22
Fortitude21 Dangerous Goods and Packaging Tools

Dangerous goods packaging calculators plus search and quote tools for Fortitude21's container range

OtherData access / search

Responded160 ms14 / 22
4ai – premium .ai domains for sale

Search 254 premium .ai domains for sale, get free .ai value estimates and real .ai sales data.

OtherData access / search

Responded161 ms14 / 22
Refine Job Search

Job search management: applications, interviews, offers, recruiter email, and company openings.

ProductivityCommunication & messaging

Responded163 ms14 / 22
AI Deals Sentinel: Free AI API Tiers

Agent-operated. Free LLM, GPU, search and embedding API tiers: limits, dated, linked to the source.

Developer ToolsAI / LLM tooling

Responded163 ms14 / 22
Picodev Lab

Arduino benches simulated in the browser: sessions, sketch push, simulation, tests, challenges.

Developer ToolsCode & DevOps

Outdated check163 ms14 / 22
Teamup Calendar MCP by usefulapi

Read and search Teamup Calendar events and sub-calendars; create, update, delete and undo events.

ProductivityData access / search

Responded164 ms14 / 22
HotelsCasa

Travel search: 1.3M hotels and apartments, owner homes, tours, flights, taxi, car rental.

TravelData access / search

Outdated check164 ms14 / 22
RocketList

Search current startup jobs and hiring companies through RocketList's public read-only data.

ProductivityData access / search

Responded167 ms14 / 22
HOUSE 'N' STARS Real Estate Discovery

AI-native real estate discovery with structured property search and market intelligence.

Real Estate & PropertyData access / search

Responded169 ms14 / 22
Agents Wiki

Knowledge base for AI agents: search, read, tasks; write, correct, report outcomes via /mcp/write.

Developer ToolsKnowledge & memory

Responded173 ms14 / 22
Garage Doorman

Garage Doorman, Grimsby ON residential garage door repair: business facts, site search, quotes.

OtherData access / search

Responded173 ms14 / 22
EU Public Tender Search (TED)

Find open EU public tenders (TED) to bid on. $0.03/call via x402.

Developer ToolsCode & DevOps

Outdated check173 ms14 / 22
MCP Harbor Search

MCP Harbor directory search: search_servers, get_server, list_categories, recent_servers.

Developer ToolsData access / search

Outdated check173 ms14 / 22
OneFindMe

Search AliExpress and eBay in any language: real listings with price, rating, delivery and links.

OtherData access / search

Responded174 ms14 / 22
Handsome Local

Search hand-picked websites for plumbers, electricians, roofers and other trades, with screenshots.

OtherData access / search

Responded174 ms14 / 22
Alexandria Archive

History of Alexandria, Egypt: search the archive, read articles, find events and prints.

OtherData access / search

Responded176 ms14 / 22
MotorSingh Used Cars India

Search ~1.5M used cars for sale across India by city, brand, model, price and year.

OtherData access / search

Responded177 ms14 / 22
lahend.ee — Estonian court decisions

Estonian court decisions: full-text case-law search, each ruling linked to its companies. Free.

LegalCode & DevOps

Outdated check177 ms14 / 22

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