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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18500 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
ColdRead

Free signed trust report on an x402 endpoint: lint, signed offers, ERC-8004, payer mix.

Developer ToolsCode & DevOps

Responded68 ms14 / 22
draw.io

Create draw.io diagrams in chat from Mermaid or XML, shown live and interactive. 10,000+ shapes.

Developer ToolsCode & DevOps

Responded68 ms14 / 22
Stargo Growth 星启出海

Search stargogrowth.com, run a read-only website AI-readiness check, or request a consultation.

Developer ToolsData access / search

Responded68 ms14 / 22
Filings Intel MCP

SEC EDGAR filings for AI agents: company lookup, filings, financials, insider trades. No keys.

Developer ToolsData access / search

Responded68 ms14 / 22
IP Address API

What's My IP Address: caller's public IP, ASN, geo, timezone, user-agent, headers, TLS info.

Developer ToolsCode & DevOps

Responded68 ms14 / 22
DAP Bellwether

Regulatory change feed for Canada, the US, the UK and the EU. Free for people, agents pay per call.

Developer ToolsCode & DevOps

Responded68 ms14 / 22
Knocklog

See how a website treats AI agents, and check whether a ChatGPT, Claude or Perplexity visit is real.

Developer ToolsCode & DevOps

Responded69 ms14 / 22
RoleDawn

New role families seen on public ATS job boards (SDR, RevOps...), company jobs, app reviews.

Developer ToolsCode & DevOps

Responded69 ms14 / 22
AgentScout

Read-only search over 2,065+ AI agent tools and 276 MCP servers. Free, no sign-up needed.

Developer ToolsData access / search

Responded69 ms14 / 22
TimeTap MCP by usefulapi

Review business details, scheduling staff, locations, services and appointment schedules.

Developer ToolsCode & DevOps

Responded69 ms14 / 22
Tokenomics Audit Desk — Unlock Calendar

Premium via x402: $1.00 full 20-token reconstruction - tokenomics-x402.gtcclothing1.workers.dev

Developer ToolsCode & DevOps

Responded69 ms14 / 22
org.directindex/scanner

AI-agent readiness of business websites: scans, city indexes, assistants' answers, direct links.

Developer ToolsCode & DevOps

Responded70 ms14 / 22
PaletteGet

Curated app, web and mini program color palettes with WCAG contrast and CSS variables.

Developer ToolsCode & DevOps

Responded70 ms14 / 22
FluxProof

Evidence-bearing public webpage monitoring with hashes, diffs, signed webhooks, REST, and MCP.

Developer ToolsMonitoring & observability

Responded71 ms14 / 22
getasof: the As Of door

The issuer record as of any date, from the sealed vintage: signed and receipted (RCO-10060).

Developer ToolsCode & DevOps

Responded71 ms14 / 22
RCO-A2A - Record of Cleared Orders

Signed receipt per cleared agentic order, by decision id. Two tools: write_receipt, verify_receipt.

Developer ToolsCode & DevOps

Responded71 ms14 / 22
AB[500] research and bounties

Sourced Art Blocks artist research, holding-duration data, and current agent bounties from AB5D.

Developer ToolsCode & DevOps

Responded71 ms14 / 22
Shippit MCP by usefulapi

Get Shippit quotes, track and manage orders; create, label, book and cancel shipments on approval.

Developer ToolsCode & DevOps

Responded71 ms14 / 22
Robot Skill Hub

Search robot code and exact-version findings; check evidence before preparing with the Hub CLI.

Developer ToolsCode & DevOps

Responded72 ms14 / 22
io.github.Integrity-Os/deliverability-doctor

Check if a domain can be email-spoofed: SPF, DMARC, DKIM, MX graded from public DNS. Authless.

Developer ToolsCommunication & messaging

Responded72 ms14 / 22
io.github.thegoldbarometer/thegoldbarometer

Today's gold buying-conditions score (0-100), its published history, and what followed since 1971.

Developer ToolsCode & DevOps

Responded72 ms14 / 22
io.github.shoggi211/jsonaut

Repair malformed JSON from LLM/agent output; optional JSON Schema coercion. Free + x402 paid.

Developer ToolsCode & DevOps

Responded72 ms14 / 22
io.github.frinto/vera-commons

Provider-neutral commons where AI agents register and exchange ed25519-signed messages.

Developer ToolsCode & DevOps

Responded72 ms14 / 22
rows.page

Push CSV, JSON, JSONL or Parquet from your agent and get a link a human can explore.

Developer ToolsFile & docs

Responded72 ms14 / 22

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