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.

Connect your agent

2933 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
Raechly

Run cold email from your agent: mailboxes, warmup, campaigns, contacts, replies and deals.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Ray notifications

Send email, push, Slack, Discord, Telegram and webhook notifications and manage templates with Ray.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Razi Document Tools

Document processing over MCP: merge, split and compress PDFs, run OCR, extract document text.

Developer ToolsFile & docs

Requires authNot measured5 / 22Not checked yet
Razi Tools

PDF, image, video, OCR, screenshot, SQL, QR and text tools for agents. No API key, no signup.

MediaCode & DevOps

Requires authNot measured5 / 22Not checked yet
Ready APIs

135 MCP tools: geo, email, phone, company, DNS, FX, equities, weather, tax, econ, intel — one key.

Data & AnalyticsCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Recall

Notes, files, GitHub, and Drive through one MCP connection.

Developer ToolsCode & DevOps

Requires authNot measured5 / 22Not checked yet
Record Meeting

Search your recorded meetings and read their speaker-labelled transcripts and AI notes.

ProductivityData access / search

Requires authOutdated checkNot measured5 / 22
Reddit Lead Finder & Brand Monitor (Apify) – leads, mentions, alerts

Find Reddit leads and brand mentions. AI buyer labels and Slack or Notion delivery. $1.50/1k results

ProductivityBrowser & web scraping

Requires authNot measured5 / 22Not checked yet
RedNote (Xiaohongshu)

RedNote (Xiaohongshu, 小红书) note search, full notes, comment threads and creator profiles.

Developer ToolsCode & DevOps

Requires authNot measured5 / 22Not checked yet
RedNote Trending (小红书): Viral Notes, Full Text & Likes

RedNote (Xiaohongshu 小红书) trending notes, no login: full text, images, video, tags, likes, saves.

MediaCode & DevOps

Requires authOutdated checkNot measured5 / 22
RegAlert

Same-day regulatory documents from ~300 financial regulators. Search free; full document $0.05.

Developer ToolsFile & docs

Requires authNot measured5 / 22Not checked yet
Relaticle

Open-source CRM your AI agents can write to: companies, people, opportunities, tasks and notes.

ProductivityFile & docs

Requires authOutdated checkNot measured5 / 22
Rendex: Rendering API for Images, PDFs & Content Extraction

Render HTML, Markdown, or URLs to images, PDF, or branded artifacts; extract and watch pages.

MediaFile & docs

Requires authNot measured5 / 22Not checked yet
RentRollAPI

Extract verified data from CRE rent rolls and T12 operating statements (PDF, Excel, CSV, scans)

Developer ToolsFile & docs

Requires authNot measured5 / 22Not checked yet
Repping.ai

Read and prepare posts, calendar, links and analytics in Repping.ai. Changes require human approval.

Developer ToolsCode & DevOps

Requires authNot measured5 / 22
Resent

Transactional email for AI agents: templates, domain verify, and sends.

Developer ToolsCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Revalidata: Contract Deadlines and Critical Dates

Critical dates found in leases, loans, policies, HOA docs, contracts, clause if known. By Built AI.

LegalKnowledge & memory

Requires authOutdated checkNot measured5 / 22
Revdoku

Cloud storage with email-receiving buckets. Store and share files with people and AI agents.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Rimbra

Deploy apps, run databases and domains, read logs, and send email and WhatsApp messages on Rimbra.

Developer ToolsCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Rock's Apify Utility Actors

Seven pay-per-event Apify Actors (PDF/CSV/links/sitemap/email/phone/VAT) as MCP tools.

Developer ToolsCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Rocketship

Your AI salesperson: find buyers, email them from your own Gmail and track replies and deals.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Rootr

Connect your team's living knowledge base — docs, data, issues, CRM — to Claude and ChatGPT.

Developer ToolsKnowledge & memory

Requires authOutdated checkNot measured5 / 22
Rosetta PDF

Parse, extract, split, and ask over digital PDFs (text layer, no OCR) from Cursor and Claude.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured5 / 22
rtfx.pro

Publish what Claude makes (HTML, PDF, small site) to a private link only chosen people can open.

OtherFile & docs

Requires authNot measured5 / 22

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