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

17937 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
Commonhold

A society for AI agents. Read it and take part free as a guest; no credential needed.

Developer ToolsCode & DevOps

Responded78 ms14 / 22
operant-mcp

Read-only MCP server for the OPERANT AI operating-agent calibration benchmark.

Developer ToolsCode & DevOps

Outdated check78 ms14 / 22
OmniForce

AI-search visibility: GEO audits, tracked prompts, competitors, citations.

Developer ToolsCode & DevOps

Outdated check78 ms14 / 22
Date Math

Date/time math for agents: business days, holidays, time zones, cron, RRULE. 25 free calls/day.

Developer ToolsCode & DevOps

Outdated check79 ms14 / 22
Git.Top

Evidence-backed open-source project search, recommendations, alternatives, and comparisons.

Developer ToolsCode & DevOps

Outdated check79 ms14 / 22
yasashii.org

Human-verified Easy Japanese versions of Japanese administrative and disaster-preparedness info.

Developer ToolsCode & DevOps

Outdated check79 ms14 / 22
Open Components

Guidelines for UI components with a perfect UX, DX and AX, whether humans or AI agents write them.

Developer ToolsCode & DevOps

Outdated check80 ms14 / 22
io.github.JonathanB555/torah-mcp

Source discipline for Torah study in Claude: read the real texts, quote exactly, never fabricate

Developer ToolsCode & DevOps

Outdated check80 ms14 / 22
POPCORN Witness Verifier

MCP server for verifying receipts: POPCORN-WITNESS/2.0 signature, digest, and time. Free, read only.

Developer ToolsCode & DevOps

Responded81 ms14 / 22
Ryan Lindsey

Ryan Lindsey's professional corpus, exposed as MCP tools.

Developer ToolsCode & DevOps

Responded83 ms14 / 22
UNPKG

Live npm and UNPKG data for AI agents: resolution, audits, import maps, malware/CVE checks.

SecurityCode & DevOps

Responded83 ms14 / 22
Nummerschilderen.com shop advisor

Search paint-by-number kits, get size and price advice for your own photo, shop info. No login.

MediaCode & DevOps

Responded83 ms14 / 22
ComputeFirst

Free deterministic tools for math, data transforms, dates, text, statistics, finance, and units.

Data & AnalyticsCode & DevOps

Outdated check83 ms14 / 22
io.github.foxdavidson/property-mortgage-mcp

UK mortgage calculators: stamp duty, MCOB 3A HNW qualification, and bridging loan cost.

Real Estate & PropertyCode & DevOps

Outdated check83 ms14 / 22
io.github.douglasdemaio/vtessera

Find vtessera agent offers, read agent cards, route an intent, and read signed attestations.

Developer ToolsCode & DevOps

Outdated check83 ms14 / 22
io.github.DigiCatalyst-Systems/dep-diff-mcp

Translates a lockfile diff into a human-readable upgrade plan for npm, PyPI, and GitHub Actions.

Developer ToolsCode & DevOps

Outdated check84 ms14 / 22
br.com.scrypta/scrypta-mcp-server

Scrypta MCP Server — Infraestrutura de visibilidade para Agentes de IA.

Developer ToolsCode & DevOps

Outdated check84 ms14 / 22
XGuard Live

Read current software facts with primary-source evidence and verification timestamps.

Developer ToolsCode & DevOps

Outdated check86 ms14 / 22
web3ctx

Version-true web3 docs, ABIs and human-validated integration recipes over MCP.

Developer ToolsCode & DevOps

Outdated check86 ms14 / 22
Pixel Agent

Convert images to PNG, JPEG, WebP, or AVIF through one public remote MCP tool.

MediaCode & DevOps

Outdated check86 ms14 / 22
io.github.holistis/cra-check

Free read-only check of a public GitHub repo for eight security signals related to the EU CRA.

Developer ToolsCode & DevOps

Outdated check86 ms14 / 22
ANIME INTELLIGENCE / AI PURCHASE INTELLIGENCE

AI commerce intelligence for anime, industrial parts, replacements, sourcing and agent buying.

MediaCode & DevOps

Outdated check87 ms14 / 22
JustOneAPI

Discover social and commerce APIs without login; authenticate for API calls and account data.

Developer ToolsCode & DevOps

Outdated check87 ms14 / 22
official.tokyo.jp

Human-verified guide to official procedures in Tokyo for foreign residents. Not a government site.

GovernmentCode & DevOps

Outdated check87 ms14 / 22

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