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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5030 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
Papers by Ouroboros Apps

Research paper search with real citations and reference formatting for AI assistants

Developer ToolsCode & DevOps

Outdated check517 ms14 / 22
WordsDesk

Play word search puzzles from 11 themes or make your own from your words, with a playable grid.

OtherData access / search

Responded518 ms14 / 22
genMC – AI Minecraft studio

Minecraft builds and skins made by your AI agent, live in your browser tab. Export .schem.

OtherAI / LLM tooling

Responded519 ms14 / 22
codercops

Search developers and remote developer jobs on codercops, a hiring marketplace.

ProductivityData access / search

Responded524 ms14 / 22
Callstay Hotels

Live hotel rates worldwide: search stays, property detail, all-in room prices, human phone desk.

TravelData access / search

Responded524 ms14 / 22
StockCake

Search millions of CC0 public-domain AI images: previews, dimensions, provenance, license.

MediaData access / search

Responded525 ms14 / 22
VaultVision Hyperliquid Vault Research

Read-only Hyperliquid vault search, risk, drawdown, rankings, TVL, alerts, and comparisons.

Developer ToolsCode & DevOps

Outdated check528 ms14 / 22
Tech.eu Funding Explorer

Search European tech funding rounds, companies, investors and exits — sourced, EUR-normalized.

OtherData access / search

Responded529 ms14 / 22
Exclusive Digits phone numbers

Search US local phone numbers for sale by city, area code, word, pattern or price.

OtherData access / search

Responded531 ms14 / 22
pigfox.ai AI search readiness

Check if a site is ready for AI search: AI crawler access, llms.txt, JSON-LD, scored out of 100.

OtherBrowser & web scraping

Responded531 ms14 / 22
HyperStore

Search and inspect 6,500+ curated AI apps from the HyperStore directory.

Developer ToolsCode & DevOps

Outdated check531 ms14 / 22
RoleWeek

Search developer jobs posted in the last 7 days in the US and Canada, with posted pay. No sign-in.

OtherData access / search

Responded532 ms14 / 22
BizValueDash

Estimate what a small business is worth and search plain-English valuation guides. Read-only.

OtherData access / search

Responded535 ms14 / 22
The Notetakers

Read-only search and Markdown for The Notetakers reviews of AI meeting notetakers.

ProductivityFile & docs

Responded536 ms14 / 22
Private Clubs

Search, look up and compare private membership clubs worldwide

OtherData access / search

Responded537 ms14 / 22
org.billcommons/bill-commons

Search 209k+ US state bills, all 50 states + DC: full text, sponsors, votes, status. Free.

OtherData access / search

Responded538 ms14 / 22
Shelfclub

Search a catalog of 1.7 million books and find books by mood, vibe, pace or genre. Read-only.

OtherData access / search

Responded540 ms14 / 22
Aigregator AI Tools

Search and compare 4,700+ AI tools: pricing, features, alternatives. Free, no API key.

OtherData access / search

Responded541 ms14 / 22
AgentDiet ArXiv AI/CS Paper Search & Structured Token-Diet Digest

Queries ArXiv for AI/CS/math papers and returns structured abstracts, authors, PDF links, and Bib.

OtherKnowledge & memory

Outdated check542 ms14 / 22
Charitology public research

Search published charity research, nonprofit benefits and sources with review states and rights.

Developer ToolsCode & DevOps

Responded544 ms14 / 22
searchnapply

1M+ jobs from company career sites. Search in your words, catch new ones daily, tailor your resume.

ProductivityData access / search

Responded548 ms14 / 22
AI Setups That Work

Search step-by-step AI setups for small business, work and home. Tested setups first.

OtherData access / search

Responded548 ms14 / 22
Supericons

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

Developer ToolsCode & DevOps

Outdated check549 ms14 / 22
CarChat Inventory

Search live US dealership inventory, get market prices, and send buyer inquiries. Free, no API key.

OtherData access / search

Outdated check550 ms14 / 22

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