MCP HeartbeatTHE MCP OBSERVATORY
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Independent measurements of remote MCP servers. Every observation has a timestamp.

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DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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17922 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
Grandet

Cheapest API for any model across official, inference and relay providers; find free credits

Developer ToolsCode & DevOps

Responded88 ms15 / 22
Shared Forest

Plant or sponsor trees in a shared forest that grows from its traffic. Sponsoring uses OAuth.

Developer ToolsCode & DevOps

Responded89 ms15 / 22
Archestack

Search, rank and compare open-source AI projects with Archestack's open data

Developer ToolsCode & DevOps

Responded89 ms15 / 22
Perfboard Designer

Design perfboard and stripboard layouts, check the wiring and get a link to open them in the editor.

Developer ToolsCode & DevOps

Responded89 ms15 / 22
MotionSpec — web animation accessibility MCP

Web animation accessibility MCP: GSAP, static CSS checks, prefers-reduced-motion, WCAG 2.2.2/2.3.3.

MediaCode & DevOps

Responded90 ms15 / 22
Restaurant Health Inspections

Restaurant health inspection grades and violations for 20 US, UK, Canadian and French locations.

Developer ToolsCode & DevOps

Responded90 ms15 / 22
CometChat Docs

CometChat docs search + implementation bundles: add chat, voice, video & moderation to your app.

MediaCode & DevOps

Responded90 ms15 / 22
Frontier Signal

Query verified AI data-broker buyer programmes and demand signals.

Developer ToolsCode & DevOps

Responded91 ms15 / 22
Nonobench

An open-source benchmark of how well LLMs solve nonogram puzzles, from 5x5 to 20x20.

Developer ToolsCode & DevOps

Responded92 ms15 / 22
Signal Desk paid tools

x402-paid tools: render pages, host files, delayed callbacks, pump.fun launch feed, trend radar

Developer ToolsCode & DevOps

Responded92 ms15 / 22
Chain of Thought podcast archive

Search and cite Chain of Thought podcast transcripts and episodes.

MediaCode & DevOps

Responded92 ms15 / 22
Currensor

Live currency conversion for 166 currencies, shown as an interactive in-chat card. No sign-in.

Finance & CryptoCode & DevOps

Responded93 ms15 / 22
Guild Wars 1 Build Compiler

GW1 build compiler: skill data, template code encode/decode, validation, hero roster. Read-only.

Developer ToolsCode & DevOps

Responded93 ms15 / 22
The Roofing List

Find checked US roofers, siding and gutter contractors by city. Read-only, no login.

Developer ToolsCode & DevOps

Responded94 ms15 / 22
OPC UA Modeler

OPC UA companion spec types, namespace dependencies, and engineering units for AI agents

Developer ToolsCode & DevOps

Responded96 ms15 / 22
Rising Shores Singapore

Sea-level rise in Singapore: when a place or address floods, areas and people affected, IPCC AR6.

Developer ToolsCode & DevOps

Responded96 ms15 / 22
saagarpatel.dev Portfolio

Agent-native MCP server over the public saagarpatel.dev corpus. Read-only, stateless.

Developer ToolsCode & DevOps

Responded98 ms15 / 22
The Agent Lounge

A guestbook for AI agents: read what other agents wrote, sign it yourself, and check the counters.

Developer ToolsCode & DevOps

Responded98 ms15 / 22
pump.fun launch feed + trend radar

Live pump.fun launches matched to Google Trends and Polymarket topics; pay per call with x402

Developer ToolsCode & DevOps

Responded99 ms15 / 22
UK Law

Search and read all UK legislation (130k Acts and regulations), updated daily, with official links.

LegalCode & DevOps

Responded99 ms15 / 22
Flaim Fantasy

Fantasy analysis for your ESPN, Yahoo, and Sleeper leagues. Reads your leagues, never changes them.

Developer ToolsCode & DevOps

Responded99 ms15 / 22
LicenseGuard

Check if a dependency's license obligates you, based on how you ship. npm, PyPI, Go.

Developer ToolsCode & DevOps

Responded100 ms15 / 22
Microlaunch

Find tools and apps by indie makers: top launches, categories, product details and deals.

Developer ToolsCode & DevOps

Responded100 ms15 / 22
Banco Central do Brasil (BCB) — SGS Time Series MCP Server

Banco Central do Brasil (BCB): SGS series, Focus expectations, PTAX, stats + provenance. 17 tools.

Developer ToolsCode & DevOps

Responded101 ms15 / 22

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