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

5042 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
Agora — forum for AI agents

Public forum where AI agents ask each other for help and share fixes. Read, search, post. No key.

Developer ToolsData access / search

Responded110 ms13 / 22
Ferienhausmiete.de – Ferienwohnungen & Ferienhäuser suchen

Search 18,000+ privately owned holiday homes on Ferienhausmiete.de: exact stay prices, availability

OtherData access / search

Responded110 ms13 / 22
TidyTools Free Web Data

45 free keyless web tools: AI extract, OCR, transcribe, SEO, DNS, contacts. Strict daily limits.

Developer ToolsAI / LLM tooling

Responded111 ms13 / 22
Crawler IP Verifier - real Googlebot or fake

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

OtherBrowser & web scraping

Responded111 ms13 / 22
Sunset Website MCP

Search and read public Sunset pages with source URLs.

Developer ToolsData access / search

Responded111 ms13 / 22
Reliance Trenchless Catalogue

Search and compare Reliance Trenchless pipe-repair products and prepare technical enquiries.

OtherData access / search

Responded111 ms13 / 22
FridgeBase (US)

Search, filter and compare fridges on FridgeBase, with DOE and ENERGY STAR data where certified.

OtherData access / search

Responded111 ms13 / 22
Watermelon UI

Search free React, Tailwind, and shadcn components, blocks, and dashboards; get installable source.

Data & AnalyticsData access / search

Responded111 ms13 / 22
HeavenPC (France)

French server rack comparison: search, filter and compare the models in HeavenPC's catalogue.

OtherData access / search

Responded114 ms13 / 22
voidjet empty legs

Search empty-leg private jet offers; prepare inquiries and alerts the user confirms by email.

ProductivityCommunication & messaging

Responded115 ms13 / 22
SkillAgent

Search and fetch AI agent skills, rules files and MCP servers indexed from GitHub.

Developer ToolsCode & DevOps

Responded115 ms13 / 22
TaxCompass — Italian tax tools

Sourced Italian tax tools for AI agents: cited primary-source search + a deterministic tax engine.

Finance & CryptoData access / search

Responded116 ms13 / 22
ToolNav AI

Search AI tools, browse categories and read tool details with source links. Free, read-only access.

OtherData access / search

Responded116 ms13 / 22
dieAnalysten Adressshop – German B2B company addresses

German B2B company addresses: search industries, count target groups, get EUR prices, order.

OtherData access / search

Responded117 ms13 / 22
entityindex.ai

Verified hotels in Andorra for AI agents: search by area, spa, pets, ski-in, family; official links.

TravelData access / search

Responded118 ms13 / 22
World Resolver

Resolve real-world capability gaps: validate native MCPs, search the web, and record unmet demand.

Developer ToolsCode & DevOps

Responded120 ms13 / 22
WoodRoar (US)

Search, filter and compare chainsaws in WoodRoar's catalogue, each with a link to its page.

OtherData access / search

Responded121 ms13 / 22
PPN Hub — public APIs over MCP

One MCP endpoint over 69 public PPN APIs: search_apis to discover, execute_api to call. Free tier.

Developer ToolsData access / search

Responded121 ms13 / 22
AlertaSubastas

Search Spain's public auctions (BOE, Social Security, tax agency, notaries) with full asset records.

Finance & CryptoData access / search

Responded121 ms13 / 22
Agentify — search engine for AI agents

Search engine for AI agents: seller-published products, verified companies, live MCP servers.

Developer ToolsData access / search

Responded121 ms13 / 22
TV Music Store

Search royalty-free cinematic and production music for videos, films, trailers, ads and games.

MediaData access / search

Responded122 ms13 / 22
Remotejobify

Search remote jobs by the country you live in, each with the line that proves you can apply.

OtherData access / search

Responded123 ms13 / 22
Outdated check123 ms13 / 22
Foundry44

Search the Foundry44 library and install animated UI components for any stack.

OtherData access / search

Responded124 ms13 / 22

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