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

2917 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
io.github.robertoyanguas-ops/arxiv-digest-mcp

Queries ArXiv for AI/CS/math papers and returns structured abstracts, authors, PDF links, and BibT

Developer ToolsCode & DevOps

Outdated check421 ms12 / 22
co.sickslip.www/verify

Verify a SickSlip doctor's note by Document ID; states served, pricing, physician NPI. Read-only.

HealthcareFile & docs

Responded423 ms12 / 22
Cognita

Passive OSINT and security recon: DNS, TLS, email posture, IP reputation, CVE/KEV, CT logs.

ProductivityCommunication & messaging

Outdated check434 ms12 / 22
io.github.robertoyanguas-ops/email-verify-mcp

Validates email syntax, disposable/burner provider status, role accounts, and live DNS records.

Developer ToolsCommunication & messaging

Outdated check463 ms12 / 22
Quarterline: Grease trap pumping for Austin restaurant groups, on one 90-day calendar

Requests for grease trap pumping across Austin restaurant locations on one calendar and invoice

Finance & CryptoPayments & trading

Responded481 ms12 / 22
dev.emailiq/email-intelligence

Email intelligence MCP: MX/SPF/DKIM/DMARC, score, enrichment. x402 on emailiq.dev/mcp.

ProductivityCommunication & messaging

Outdated check482 ms12 / 22
Nodehour: GPU capacity sized from your run and quoted by providers

GPU cluster sourcing: describe the run, get a sized requirement, quotes compared by email

ProductivityCommunication & messaging

Responded489 ms12 / 22
Nestproof: Graded pattern files your LA factory signs off before the cut

Graded pattern-file transfer to LA factories, with factory sign-off checks; terms by email

ProductivityCommunication & messaging

Responded490 ms12 / 22
emailmd

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

ProductivityCommunication & messaging

Outdated check494 ms12 / 22
cn.pianam.mcp/calendar-mcp

China holidays and lunar calendar lookup, solar-to-lunar conversion and yearly schedule.

ProductivityData access / search

Outdated check495 ms12 / 22
JIR Ventures Sales Agent

Finds verified B2B leads and writes an outreach email in English or Arabic.

Marketing & SalesCommunication & messaging

Responded496 ms12 / 22
MindMap

Turn outlines and hierarchical notes into interactive mind maps through a hosted remote MCP server.

ProductivityFile & docs

Outdated check496 ms12 / 22
MintMCP Docs

Search and read the official MintMCP documentation, the enterprise MCP gateway.

Developer ToolsFile & docs

Outdated check496 ms12 / 22
AI Architectures

Search ~500 free house plans and have AI-drafted CAD floor plans (DXF, DWG, PDF) drawn and changed.

Developer ToolsData access / search

Responded504 ms12 / 22
io.github.justinmont84/loyaltyvip

U.S. casino directory + a player's loyalty data, comps, tiers, and gambling tax docs.

Developer ToolsCode & DevOps

Responded507 ms12 / 22
16暗影心理测评

Chinese psychological assessments with guided questions, scoring, PDF reports, and user profiles.

OtherFile & docs

Responded508 ms12 / 22
Responded510 ms12 / 22
Genaya

Run a service business from your assistant: appointments, clients, invoices, calls and tasks.

Finance & CryptoPayments & trading

Outdated check512 ms12 / 22
Decant: convert CSV, XLSX and PDF to JSON; web page extraction that honours robots.txt

Hosted MCP: CSV/XLSX to JSON rows and text-PDF pages; private uploads or URLs, no API key.

Developer ToolsFile & docs

Responded521 ms12 / 22
Digital Business Portal

Read-only: contractor licences CA/TX/FL/WA, email and phone checks, web reader, CA repair dispatch.

ProductivityCommunication & messaging

Responded528 ms12 / 22
PlacePack

Generate deterministic placeholder image URLs and packs for docs, staging, testing, and AI agents.

MediaAI / LLM tooling

Outdated check528 ms12 / 22
Octopus

Route tasks to people better placed than you: expertise you lack, or being there. Escrowed.

OtherOther

Responded532 ms12 / 22
io.inboxguard/email-deliverability

Scan and fix a domain's email deliverability (SPF, DKIM, DMARC, MTA-STS, BIMI, DNS blocklists).

ProductivityCommunication & messaging

Outdated check534 ms12 / 22
Celo Docs

Search and read the Celo developer documentation

Developer ToolsFile & docs

Outdated check561 ms12 / 22

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