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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5039 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
ASRM (AI Search Rank Monitor)

Check a website's AI readiness and answer AI visibility and GEO questions from ASRM's guides.

OtherData access / search

Responded602 ms14 / 22
Al Jazeera 360

Browse, search & watch Al Jazeera 360's Arabic shows, documentaries and podcasts inside the chat.

MediaCode & DevOps

Outdated check602 ms14 / 22
Mode VC: Seed Stage Venture Capital Firms & Check Size Atlas

Search institutional seed venture capital firms, partner profiles, and valuation benchmarks on.

OtherData access / search

Responded604 ms14 / 22
Dreamwork

Job search, application materials, and application tracking for AI assistants.

Developer ToolsCode & DevOps

Outdated check604 ms14 / 22
MRR Ledger

Free, no key: sourced, dated revenue of real AI-agent businesses. Start with search_businesses.

Finance & CryptoData access / search

Responded605 ms14 / 22
Rank by Ouroboros Apps

SEO rankings and traffic from Google Search Console for AI assistants, read-only

Developer ToolsCode & DevOps

Outdated check605 ms14 / 22
The GTM Directory

Search and compare GTM tools and their vendor-verified MCP, API and pricing facts. Keyless.

Developer ToolsData access / search

Responded607 ms14 / 22
Hacé Cuentas — Free Calculators

Free calculators as MCP tools: finance, taxes, health, units, dates. Search, fetch & compute.

Developer ToolsCode & DevOps

Outdated check610 ms14 / 22
CodeTrendy

Search the CodeTrendy directory of websites and tools. Read-only, no API key.

OtherData access / search

Responded611 ms14 / 22
Christian Jobs List

Search current job listings on Christian Jobs List and read each one.

OtherData access / search

Responded613 ms14 / 22
BUKAEZ

Read and search public posts, bukaes (AI characters) and communities on the BUKAEZ social app.

OtherData access / search

Responded613 ms14 / 22
Lacuna Research MCP

Search Lacuna's ML research graph for papers, directions, authors, venues, and hypotheses.

Developer ToolsCode & DevOps

Responded613 ms14 / 22
io.github.QueryQuarry/queryquarry

Double-blind talent marketplace: AIs search anonymous opted-in candidates; reveal on consent.

Developer ToolsCode & DevOps

Responded614 ms14 / 22
Omakase Icons

Search free MIT SVG icons and paste React, Vue, Svelte or SVG code. No auth.

OtherData access / search

Outdated check614 ms14 / 22
Remnant — Reusable Agent Experience

Search agent experience, inspect evidence, and report real outcomes through MCP.

Developer ToolsData access / search

Responded615 ms14 / 22
Awesome JEV

Search Jev / System One projects and read their recorded inclusion evidence.

Developer ToolsCode & DevOps

Outdated check617 ms14 / 22
Book Search (Open Library)

Search books and authors across Open Library, the Internet Archive open catalog.

OtherData access / search

Responded619 ms14 / 22
ExplorationMaps

Mining claim search and professional mineral exploration maps from public registries.

Developer ToolsCode & DevOps

Outdated check621 ms14 / 22
Sikaru Docs

Read-only search over the public Sikaru documentation: managed agents, inference, evals and traces.

Developer ToolsFile & docs

Outdated check624 ms14 / 22
Proa documentation

Search and read official Proa Rust framework documentation. Public, read-only, no credentials.

Developer ToolsFile & docs

Outdated check627 ms14 / 22
e-eSIM Catalog

Search travel eSIM data plans worldwide with live prices, plan details and a buy link.

TravelData access / search

Responded628 ms14 / 22
ai.radmail/radmail-mcp

Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.

ProductivityCommunication & messaging

Responded628 ms14 / 22
NC General Statutes

NC statutes, session laws, Constitution, court rules and agency rules: search, read, see changes.

LegalData access / search

Responded630 ms14 / 22
Lunonis Astrology

Birth charts, synastry and birth-place search from an ephemeris. Free, read-only, nothing stored.

OtherData access / search

Responded631 ms14 / 22

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