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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2942 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
Inthread

Sign in with email or GitHub. Invite others. Agent-to-agent, threaded, async MCP message inbox.

ProductivityCommunication & messaging

Outdated checkNot measured4 / 22
Iteration Layer

Composable APIs for document extraction, image transformation, and document & sheet generation.

MediaFile & docs

Outdated checkNot measured4 / 22
KidStoryAI / MyKidsBook

Create a one-of-a-kind story with your child as the hero. Free sample, printable PDF, share with fam

OtherFile & docs

Outdated checkNot measured4 / 22
M365 Graph MCP

Manage Microsoft 365 email, calendar, contacts and inbox rules via the Graph API with OAuth 2.0.

ProductivityCommunication & messaging

Outdated checkNot measured4 / 22
MakeMyContent

AI content studio for blog posts, ad copy, email campaigns, social media, newsletters, and video scr

Marketing & SalesCommunication & messaging

Outdated checkNot measured4 / 22
Masaro

Task management for teams building with AI agents. Agents claim tasks and report progress.

Developer ToolsCode & DevOps

UnreachableNot measured4 / 22
noduty planner

Issue tracking for software projects: issues, epics, releases, docs and boards, from your AI.

OtherOther

Outdated checkNot measured4 / 22
OIO

Projects, tickets, notes and to-dos in OIO, the freelance workspace. OAuth sign-in, Pro plan.

ProductivityFile & docs

UnreachableNot measured4 / 22
PDF Generator API

Generate PDF from HTML or Markdown with custom pages, margins, layout. x402.

Developer ToolsFile & docs

Outdated checkNot measured4 / 22
Person Enrichment API

Person lookup from email: name, title, company, social profiles. x402.

Developer ToolsCommunication & messaging

Outdated checkNot measured4 / 22
RecruitMCP

Search people and companies, enrich profiles, and find email and phone over MCP.

ProductivityCommunication & messaging

UnreachableNot measured4 / 22
rezee

Issues, pull requests, docs, chat and CI runs across a rezee workspace.

OtherOther

UnreachableNot measured4 / 22
ScrapeMole Domains

Pay-per-call x402 DNS, WHOIS/RDAP, availability, email security, SSL check, CT subdomains.

ProductivityCommunication & messaging

Outdated checkNot measured4 / 22
Screenshot & PDF Capture API

Capture screenshots (PNG/JPEG/WebP) and generate PDFs from any URL. x402 payments.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Scribase

Supabase-compatible Postgres for agents: projects, branches, SQL, auth, storage, email.

Developer ToolsDatabase

Outdated checkNot measured4 / 22
Siftable

Siftable MCP server for governed work, knowledge, calendar, people, datasets, and Vault.

Developer ToolsCode & DevOps

UnreachableNot measured4 / 22
Simafri Suite

Professional email, calendar, contacts and files on your own domain.

ProductivityCommunication & messaging

Outdated checkNot measured4 / 22
SimpleServe

Find AI agents, delegate research and other tasks, and get results in your AI assistant.

Developer ToolsCode & DevOps

UnreachableNot measured4 / 22
Slidler

Turn a URL, YouTube video or text into a branded LinkedIn/Instagram carousel PDF. No key needed.

MediaFile & docs

Outdated checkNot measured4 / 22
SparkForge — 20+ Utility APIs with x402 Micropayments

20+ pay-per-use APIs: image gen, crypto data, email verify, SSL check, web scraping, and more.

Finance & CryptoBrowser & web scraping

Outdated checkNot measured4 / 22
SummarizeThis

Paste a transcript or document and get a structured summary with action items, plus slides and repor

OtherFile & docs

Outdated checkNot measured4 / 22
Taiwan Laws + U.S. Company Financials (x402)

Taiwan laws and U.S. XBRL financials (paid, x402) plus AI City: free agent registry, tasks, votes.

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
TMRS Rental Quotes

Rent heavy equipment and machinery in Germany: catalog, prices and PDF quotes.

OtherFile & docs

Outdated checkNot measured4 / 22
Toolora MCP Server

12 free tools: PDF, OCR, QR codes, audio transcription, URL scraping, Excel, Word. No key needed.

MediaFile & docs

Outdated checkNot measured4 / 22

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