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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18062 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
Propertyware MCP by usefulapi

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

Developer ToolsCode & DevOps

Responded142 ms14 / 22
Resistance Tools

MCP tools for TON Sites, TON DNS and TON Storage.

Developer ToolsCode & DevOps

Responded142 ms14 / 22
Commit — Supply Chain Risk Scoring

Supply chain risk scoring for npm, PyPI, Cargo, and Go. 9 tools. Behavioral signals.

Developer ToolsCode & DevOps

Outdated check142 ms14 / 22
io.github.oathlayer/oathlayer

Verify AI outputs against real sources. Returns a trust signal and permanent doc number.

Developer ToolsCode & DevOps

Outdated check142 ms14 / 22
Community Board

Search and discover local community listings, classifieds, services and events.

Developer ToolsCode & DevOps

Outdated check142 ms14 / 22
Public Agent Lounge

Open chat room for bots: messages, private DMs, directory, task board, E2E keys, WebRTC signals.

Developer ToolsCode & DevOps

Outdated check144 ms14 / 22
RegEvidenceHub Waste

RegEvidenceHub Waste: England waste registration, DWT readiness and permit-change preflight.

Developer ToolsCode & DevOps

Outdated check144 ms14 / 22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

Outdated check144 ms14 / 22
API Meter

Per-customer API usage analytics: sign up, get ingest snippets, read usage by customer and endpoint.

Developer ToolsCode & DevOps

Responded146 ms14 / 22
Agentic Mermaid

Render, verify, describe, and safely edit Mermaid diagrams through MCP.

Developer ToolsCode & DevOps

Outdated check146 ms14 / 22
SubcueAI

Public read-only MCP for SubcueAI: live pricing, latest desktop version, overview and FAQ.

Developer ToolsCode & DevOps

Responded147 ms14 / 22
Enciclopedia Católica Wikitólica

Enciclopedia Católica de referencia: fe, doctrina, tradición, santos, liturgia, historia, etc.

Developer ToolsCode & DevOps

Responded148 ms14 / 22
FrankKi

The agentic layer of letters. Agents send real printed mail worldwide, German compliance built in.

Developer ToolsCode & DevOps

Outdated check148 ms14 / 22
MON$TER Agent Challenge

Which AI agent earns the most for its human? Join with your human's OK and refer businesses.

Developer ToolsCode & DevOps

Responded150 ms14 / 22
Fedor Chishchin — AI agents & MCP servers

Read-only facts about AI engineer Fedor Chishchin: services, case studies, posts, courses, contact.

Developer ToolsCode & DevOps

Responded151 ms14 / 22
Go2Clock MCP by usefulapi

Read clock records, timesheets and rotas; change employees and rotas, add clock records in Go2Clock.

Developer ToolsCode & DevOps

Responded151 ms14 / 22
Heartbeat — dead-man switch for cron jobs & AI agents

Dead-man switch monitors for cron & AI agents with dependency-cascade alerts. No account needed.

Developer ToolsCode & DevOps

Outdated check152 ms14 / 22
13FLOW

Source-linked SEC 13F research, quality checks, watchlists and audit trails for agents.

Developer ToolsCode & DevOps

Outdated check153 ms14 / 22
MCP Charts

Find MCP servers, skills, plugins, agents, prompts and rules for any task.

Developer ToolsCode & DevOps

Outdated check154 ms14 / 22
USPS Holiday Shipping Deadlines MCP

USPS holiday shipping deadlines: Christmas send-by dates, days left, military and international.

Developer ToolsCode & DevOps

Outdated check154 ms14 / 22
HTTPfy network & DNS tools

Free DNS, SPF/DKIM/DMARC, TLS, WHOIS, IP/ASN, blocklist, ping, traceroute and port checks. No key.

Developer ToolsCode & DevOps

Responded155 ms14 / 22
FiveM Docs

Search and read independent FiveM development guides with citations. Free, read-only, no API key.

Developer ToolsCode & DevOps

Outdated check155 ms14 / 22
Plato's Kallipolis

Read-only MCP tools for AI agent discovery, structured resources, and NIULAI information.

Developer ToolsCode & DevOps

Outdated check155 ms14 / 22
Axint

Proof and repair for Apple coding agents: validate Swift, run Xcode evidence, and repair failures.

Developer ToolsCode & DevOps

Outdated check155 ms14 / 22

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