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

2922 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
CareerForge ATS v4.0 MCP

Workday, Greenhouse & Lever ATS Resume Keyword Optimizer & DOCX/PDF Kit ($1 USDC).

ProductivityFile & docs

Responded1264 ms11 / 22
AGILEX Docs

Official AGILEX robotics product docs: manuals, CAN protocol, firmware, FAQ. Read-only.

OtherOther

Unreachable708 ms11 / 22
io.github.freshfos/dropcoin-validation

EU compliance checks for AI agents: sanctions, company, VAT ID, IBAN, email. Pay per call.

Developer ToolsCommunication & messaging

Outdated check45 ms10 / 22
io.github.freshfos/dropcoin-invoice

German e-invoicing: generate XRechnung 3.0, pre-check and extract (incl. ZUGFeRD PDF). Paid.

Finance & CryptoPayments & trading

Outdated check56 ms10 / 22
Email Check

Fast email validation at the edge: syntax, MX records, disposable-domain detection.

Developer ToolsCommunication & messaging

Outdated check62 ms10 / 22
Nothing.gripe

Funded one-off task marketplace: list open tasks, read, estimate, post and fund.

Developer ToolsCode & DevOps

Outdated check62 ms10 / 22
com.rowhint/seat-intelligence

Airline seat quality scores (1-10) with notes. 61+ configs across 10 US airlines.

TravelData access / search

Outdated check63 ms10 / 22
com.tallymesh/lc-checker

Check a letter-of-credit document set for UCP600/ISBP discrepancies before the bank does.

Finance & CryptoFile & docs

Outdated check71 ms10 / 22
Agent Haven

Open world for autonomous AIs: move in, get a home, take tasks, build, and return as yourself.

Developer ToolsCode & DevOps

Outdated check71 ms10 / 22
com.am-lich/vietnamese-calendar

Vietnamese Lunar Calendar for date and calendar conversion, and cultural insights.

ProductivityFile & docs

Outdated check76 ms10 / 22
Dmarc Spf Audit

Complete domain email-auth audit in one call: SPF with RFC 7208 lookup counting, DKIM selector pr...

Developer ToolsCommunication & messaging

Outdated check113 ms10 / 22
io.github.Ainode-tech/swiss-army

22 utility tools (x402 USDC on Base): currency, PDF, image, GDPR. Free health.

Finance & CryptoPayments & trading

Outdated check140 ms10 / 22
Incwo MCP

Secure MCP server for exploring incwo CRM data, documents, and email workflows.

Developer ToolsCommunication & messaging

Outdated check150 ms10 / 22
io.github.jethrokirk-sudo/filingapi

SEC filings, earnings transcripts, guidance signals & macro calendar for S&P 500. 11 MCP tools.

Developer ToolsCode & DevOps

Outdated check329 ms10 / 22
PDF Kit

AI-powered PDF tools: fill forms via natural language

OtherFile & docs

Outdated check446 ms10 / 22
Fengshui Calculator

Verifiable Chinese calendar & feng shui: BaZi, flying stars, Kua, almanac. SHA-256 replayable.

ProductivityFile & docs

Outdated check481 ms10 / 22
AdCritter for Builders

AdCritter ads platform: docs, API reference, app scaffolding, and white-label integration.

Marketing & SalesData access / search

Outdated check717 ms10 / 22
MiOffice — AI-Powered Workspace Studio

125+ browser tools for PDF, Image, Video, Audio, AI, Scanner. Files never leave your device.

MediaCode & DevOps

Outdated check1067 ms10 / 22
ClawSpan ShardLink MCP

Agent-first task marketplace MCP — discover, claim, and deliver paid workspace tasks.

Developer ToolsCode & DevOps

Outdated check1142 ms10 / 22
Email Preflight

x402 v2 payment requests; relays compatible clients' signed payments to the existing product API.

Finance & CryptoPayments & trading

Outdated check1146 ms10 / 22
com.dropwatchhq/bio-catalyst

Verified biotech catalyst calendar (PDUFA/AdComm/trial readouts) anchored to official sources.

ProductivityFile & docs

Responded55 ms10 / 22
site.jiebang.www/tools

20 free dev tools: JSON/YAML, XML/SQL, Cron, SEO, QR code, URL shortener, cron tasks, files

Marketing & SalesDatabase

Outdated check152 ms10 / 22
com.stimulsoft/docs

Stimulsoft Reports & Dashboards docs MCP server. Semantic search for all platforms.

Data & AnalyticsData access / search

Outdated check312 ms10 / 22
Agent Papers

Registry of companies selling AI agents identity, phone, email, addresses, money, legal, insurance

LegalCommunication & messaging

Outdated check466 ms10 / 22

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