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.

Connect your agent

324 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
Have I Been Pwned

Breach intelligence API: email search, domain monitoring, passwords and stealer logs.

Developer ToolsMonitoring & observability

Responded617 ms12 / 22
DropEngine x402 Agent Services

AI Agent Utility Layer for agent safety, web monitoring, crypto research and tool discovery.

Finance & CryptoMonitoring & observability

Responded676 ms12 / 22
Agent Tested

Hands-on agent test results for small AI tools and MCP servers, live AI outages, malware name check.

SecurityMonitoring & observability

Responded743 ms12 / 22
AutoPilot IT

Small-business IT monitoring and Windows device security.

OtherMonitoring & observability

Responded814 ms12 / 22
PCBLT — Live Checks

Live DNS, email-auth and redirect checks, HTTP security headers, uptime history, PC hardware prices.

ProductivityMonitoring & observability

Responded1056 ms12 / 22
AIWebSignals

Public AI web-readiness scanner and machine-facing observability discovery service.

Developer ToolsMonitoring & observability

Responded1161 ms12 / 22
Responded30 ms12 / 22
io.github.mikerawsonnz/traced-llm-proxy

Proxy Gemini (Vertex AI) completions wrapped in OpenTelemetry trace spans; returns the answer plus t

Developer ToolsMonitoring & observability

Responded460 ms12 / 22
io.github.mikerawsonnz/llm-observability-orchestration

Run a prompt through a LangChain (system + human) chain over Gemini on Vertex AI; optional LangSmith

Developer ToolsMonitoring & observability

Responded478 ms12 / 22
FIRST EPSS CVE Exploit Score & OSV Vulnerability Audit

Real-time FIRST.org EPSS 30-day CVE exploit probability scoring and OSV package security audit.

SecurityMonitoring & observability

Responded522 ms12 / 22
SHA-256 Hash-Chained AI Agent Compliance & Decision Notary

Tamper-evident SHA-256 hash-chained decision notary for EU AI Act, NIST AI RMF & SOC2.

SecurityMonitoring & observability

Responded557 ms12 / 22
CEA Digital B2A Fulfillment Factory

High-speed institutional API data gateway for SEC EDGAR, OSV CVE, FDIC, USGS, NPI, and GCP Catalog.

SecurityMonitoring & observability

Responded654 ms12 / 22
UpLane Website Uptime Checker

Check if any website is up (status, latency, redirects, security headers) and set uptime alerts.

OtherMonitoring & observability

Responded83 ms11 / 22
com.googleapis.monitoring/mcp

Gain visibility into the performance, availability, and health of your apps and infrastructure.

OtherMonitoring & observability

Responded169 ms11 / 22
Filter Solutions Ltd Public Technical Content

Read-only MCP access to Filter Solutions Ltd public filtration and oil monitoring content.

Developer ToolsMonitoring & observability

Responded357 ms11 / 22
ICONIC Intelligence Reserve — Free Agent Assessment

Free agent assessment and a one-hour synthetic Reserve sandbox with outcome tracing.

Developer ToolsMonitoring & observability

Responded1023 ms11 / 22
monit.rs

Schema-aware API monitoring: diff OpenAPI specs for breaking changes, manage endpoints.

Developer ToolsMonitoring & observability

Responded1814 ms11 / 22
Responded184 ms11 / 22
MCP Heartbeat

Live health checks for public MCP servers: status, tools, latency, and uptime. Automated measurements, not a rating.

Developer ToolsMonitoring & observability

Outdated check315 ms10 / 22
USGS Water Monitoring

Real-time water levels and flow rates from USGS stream gauges

OtherMonitoring & observability

Responded531 ms10 / 22
EPA EJScreen

Environmental justice screening indicators, pollution burden, and demographic vulnerability

SecurityMonitoring & observability

Responded533 ms10 / 22
CDC Social Vulnerability Index

SVI scores and theme breakdowns by county and tract

SecurityMonitoring & observability

Responded535 ms10 / 22
Agent Cost Log

Cost per run, tool, model and day for AI agents, from one call or an OpenTelemetry export.

Developer ToolsMonitoring & observability

Responded778 ms10 / 22
link.hultra/mcp-registry-uptime

Annuaire vérifié des serveurs MCP : ce qui est mort, protégé ou en retard de spec.

Developer ToolsMonitoring & observability

Responded87 ms10 / 22

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