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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18169 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
MCP Trust Index

Curated, trust-first index of vetted MCP servers — scored tiers, monthly re-verified. Read-only.

Developer ToolsCode & DevOps

Responded133 ms14 / 22
Agent Service Exchange

Find providers; send authorised installation or cleaning enquiries in Vienna. No customer account.

Developer ToolsCode & DevOps

Outdated check133 ms14 / 22
EU Safety Gate Product Recalls

Is this product recalled in the EU? 46,506 official Safety Gate alerts by GTIN, brand or name.

Developer ToolsCode & DevOps

Outdated check133 ms14 / 22
Atlas of Plant Based: PCT data

Read-only Pacific Crest Trail data: legs by trail mile, towns, passes and lakes, and vegan resupply.

Developer ToolsCode & DevOps

Responded134 ms14 / 22
PaperBanana Research Figure Prompts

Search and read public research figure prompt templates from PaperBanana.

Developer ToolsCode & DevOps

Responded134 ms14 / 22
Container Loading Calculator

Work out how many flat-pack units fit in a 20ft or 40HQ container: layers, weight and utilisation.

Developer ToolsCode & DevOps

Responded134 ms14 / 22
Bidsketch MCP by usefulapi

Read Bidsketch clients, proposals, fees and templates; create and update clients, proposals, fees.

Developer ToolsCode & DevOps

Responded134 ms14 / 22
The 07:00 Brief

Your agent knows the markets by 07:00, every day. We read them so you don't have to.

Developer ToolsCode & DevOps

Responded135 ms14 / 22
SatsDNS

DNS hosting, secondary DNS and dynamic DNS paid per call in sats; optional Nostr account tools.

Developer ToolsCode & DevOps

Responded135 ms14 / 22
US Federal Awards (USAspending)

See who wins US federal contracts and grants (USAspending.gov). $0.02/call via x402.

LegalCode & DevOps

Outdated check135 ms14 / 22
Lex — Temporal Luxembourg and EU Law

Temporal search and comparison for official Luxembourg and reviewed EU law, with provenance.

Developer ToolsCode & DevOps

Responded136 ms14 / 22
Skuuy MCP

13 privacy-first network, auth & web tools for AI agents — no API key, 60 req/min free.

Developer ToolsCode & DevOps

Responded139 ms14 / 22
Pressbox News Wire

Search published Pressbox press releases and newsrooms with original source links and dates.

MediaCode & DevOps

Responded139 ms14 / 22
eu.mmatinca/portfolio-mcp

Marian Matinca's portfolio as MCP tools: projects, blog, profile, results. Read-only, RO+EN.

Developer ToolsCode & DevOps

Responded139 ms14 / 22
PromptingCraft Guidance

Source-backed prompting and coding-agent guidance with provenance and freshness checks.

Developer ToolsCode & DevOps

Responded139 ms14 / 22
io.github.giuseppesocci-bot/kalicart-global

Federated commerce search across independent WooCommerce merchants. Keyless, read-only MCP server.

E-commerceCode & DevOps

Responded139 ms14 / 22
Company Lookup (GLEIF LEI, UK, Norway)

Confirm a company exists and is active (GLEIF, Norway registry). $0.02/call via x402.

Developer ToolsCode & DevOps

Outdated check139 ms14 / 22
Oliver's mTOR Atlas

Evidence-labelled mTOR research: studies, entities, pathway claims, contradictions, open questions.

Developer ToolsCode & DevOps

Outdated check139 ms14 / 22
io.github.41fred/ibo

Commission cinematic AI campaign films from IBO Studio, with custom scoping when needed.

Marketing & SalesCode & DevOps

Responded140 ms14 / 22
spintax.net MCP server

Write, validate, render and analyze spintax templates. Backed by @spintax/core. No auth.

Developer ToolsCode & DevOps

Responded141 ms14 / 22
WeJob

Read-only MCP server for public WeJob jobs, formations, and companies.

Developer ToolsCode & DevOps

Responded141 ms14 / 22
Almirall MCP

Official Almirall company, product and brand info: Almax, Hidroxil, Calmatel, Cicopoli and more.

Developer ToolsCode & DevOps

Responded141 ms14 / 22
OPC UA NodeSet Gate

Deterministic release-compatibility preflight for OPC UA NodeSet2 XML.

Developer ToolsCode & DevOps

Responded142 ms14 / 22
Propertyware MCP by usefulapi

Read Propertyware properties, leases and work orders; add maintenance tasks and comments.

Developer ToolsCode & DevOps

Responded142 ms14 / 22

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