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

2930 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
Atomic Mail

Programmable email inbox for AI agents — JMAP, PoW auth, stdio MCP server.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Audio & Video to Text (Whisper)

Whisper speech to text, 99 languages: files, TikTok and podcast links to text, SRT, Word/PDF.

MediaAI / LLM tooling

Requires authOutdated checkNot measured5 / 22
Audryo

Lifecycle email for agents: journeys, campaigns, contacts, consent and delivery health.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Aura

Email address, webhook, durable memory and zero-token waiting for agents. Paid in USDC via x402.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
Automata

Scoped, revocable access to your WhatsApp, Telegram, IMAP email and PostgreSQL for AI agents.

Developer ToolsCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Ballast

Cold email outreach: manage campaigns, lead sequences, mailbox warmup, and unified inbox replies.

ProductivityCommunication & messaging

Requires authNot measured5 / 22
Banger

All your company email, operated by agents and reviewed by you.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Bankstatemently

Convert PDF bank statements into structured transactions, accounts, and balances.

Developer ToolsCode & DevOps

Requires authNot measured5 / 22Not checked yet
Bestie Check

Document reasoning checks: a helicopter view of claims and assumptions before handoff.

Developer ToolsFile & docs

Requires authOutdated checkNot measured5 / 22
Bleep

Create Tasks and run Workflows in Bleep from Claude, ChatGPT, and other AI assistants.

OtherAutomation & workflows

Requires authOutdated checkNot measured5 / 22
BlogSEO

SEO that executes: keywords, calendar, articles written, scored and published to your CMS, backlinks

ProductivityFile & docs

Requires authOutdated checkNot measured5 / 22
blue·auth Document Signing

Send AI-created PDFs for signature, track signers, and return verifiable document evidence.

Developer ToolsFile & docs

Requires authOutdated checkNot measured5 / 22
Booksmate

Search, summarise and export your invoices and receipts collected from email and supplier portals.

Finance & CryptoPayments & trading

Requires authOutdated checkNot measured5 / 22
bookstore4agents

Marketplace where AI agents buy and sell books — curated domain knowledge that improves tasks.

Developer ToolsCode & DevOps

Requires authNot measured5 / 22Not checked yet
BountyMarket

Task marketplace for AI agents and humans (Australia, AUD, online tasks).

Developer ToolsCode & DevOps

Requires authNot measured5 / 22Not checked yet
Bulk Email Verifier & Validator

Check emails for valid syntax, MX records, disposable and role addresses and typos. No SMTP check.

Developer ToolsCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Bulk Email Verifier Pro

DNS/MX bulk email verification via MCP with role, disposable and free-provider flags.

Developer ToolsCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Calaf

Run your Calaf recruiting book from chat: firms, people, pipeline, calendar, notes, and prep.

ProductivityFile & docs

Requires authNot measured5 / 22
CalendarMCP

Hosted Google Calendar MCP server for AI agents. No self-hosting or Google Cloud setup.

ProductivityFile & docs

Requires authNot measured5 / 22Not checked yet
CallerKit

Caller ID and phone lookup: names, spam reports, fraud risk score, name/email search.

ProductivityData access / search

Requires authOutdated checkNot measured5 / 22
CaptureKit

Capture websites as PNG, JPEG, WebP or PDF, extract their content, or analyse them with AI.

Developer ToolsFile & docs

Requires authNot measured5 / 22Not checked yet
Carbone MCP

Automate enterprise-grade documents from templates, merge and 100+ conversions: PDF, Office, HTML.

Developer ToolsFile & docs

Requires authOutdated checkNot measured5 / 22
Career Rift

Manage job applications — jobs, companies, boards, notes, and profile — from your AI client.

ProductivityFile & docs

Requires authOutdated checkNot measured5 / 22
Casually

Save landing page and email drafts in Casually, request human review and read campaign results.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured5 / 22

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