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

2952 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
NVIDIA CUDA Docs

Search NVIDIA CUDA documentation and code samples from AI coding agents.

Developer ToolsFile & docs

Requires authNot measured3 / 22
OP Inference

OP tasks, your presets and the public workflow gallery, billed to your API key.

Developer ToolsAutomation & workflows

Requires authNot measured3 / 22Not checked yet
OptiAI

AI life manager: tasks, home, health, wealth, childcare, pets & more — on your own data.

OtherOther

Requires authOutdated checkNot measured3 / 22
Oryah Mail

Governed email for agents: Gmail, M365 and IMAP; per-mailbox permissions, send allowlist, audit log

ProductivityCommunication & messaging

Requires authNot measured3 / 22
OutreachBox

Cold email, prospect research, inbox triage, and content marketing in OutreachBox.

ProductivityCommunication & messaging

Requires authNot measured3 / 22Not checked yet
Pactlyst.ai — PactCheck document review for agents

Score documents and check agent work — signed PactCheck Receipts: proof-of-review for agents.

Developer ToolsFile & docs

Requires authNot measured3 / 22Not checked yet
Pageshuck: PDF to Text & Markdown

Pageshuck: PDF, Word and PowerPoint files to clean text and Markdown, tables kept, RAG chunks.

Developer ToolsFile & docs

Requires authNot measured3 / 22Not checked yet
ParseBounce

Email deliverability monitoring and sending: bounces, complaints, suppression, campaigns.

Marketing & SalesMonitoring & observability

Requires authOutdated checkNot measured3 / 22
PDF & Word Metadata Cleaner — Inspect, Clean & Verify

Inspect and remove PDF/DOCX author metadata and comments; approve tracked changes before cleaning.

Developer ToolsFile & docs

Requires authOutdated checkNot measured3 / 22
PDF Extractor: Bulk PDF to Text, Tables & Markdown from a CSV

Extract text, tables and metadata from every PDF linked in a dataset, CSV or Google Sheet.

Developer ToolsFile & docs

Requires authNot measured3 / 22Not checked yet
PDF Text Extractor

Text from PDF links, OCR for scanned pages. One flat row per URL, never null. Billed on success.

Developer ToolsCode & DevOps

Requires authNot measured3 / 22Not checked yet
PDF Text Extractor (Apify Actor)

Extract text, tables and RAG chunks from public PDF URLs; pay-per-event via your Apify account.

Developer ToolsCode & DevOps

Requires authNot measured3 / 22Not checked yet
PDF Text Extractor (Ctrio Lab)

Extract text, Markdown and metadata from PDF URLs or uploads via Apify, per document or per page.

OtherFile & docs

Requires authNot measured3 / 22Not checked yet
PDF Text, Table and OCR Extractor

PDF URLs to per-page text, tables as rows, Markdown, metadata and OCR for scanned pages.

Developer ToolsFile & docs

Requires authOutdated checkNot measured3 / 22
PDF to Markdown / PDF to Text — PDF Text Extractor + OCR

PDF to Markdown and PDF to text from PDF URLs, page by page, with OCR for scanned pages

Developer ToolsFile & docs

Requires authNot measured3 / 22Not checked yet
PDF to MD

Convert PDF documents to Markdown for AI agents through an authenticated remote MCP server.

Developer ToolsFile & docs

Requires authNot measured3 / 22Not checked yet
PDF to Text and Markdown Extractor with Reading Order

Turn PDF links or uploaded files into Markdown and plain text, one row per page.

Developer ToolsFile & docs

Requires authNot measured3 / 22Not checked yet
PDFHaul MCP

PDF tools: merge, split, compress, convert, OCR & more. OAuth with auto-registration or API key.

Developer ToolsFile & docs

Requires authNot measured3 / 22Not checked yet
PDFInvoiceAPI

Turn HTML or templates into branded invoice & document PDFs from your agent. One call, no install.

Finance & CryptoPayments & trading

Requires authNot measured3 / 22Not checked yet
Pear MCP

Connect Apple iCloud and Microsoft 365 mail, calendars, contacts and tasks to AI.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured3 / 22
Pencil

Manage tasks, projects, roadmaps, files, meetings, and team workflows with AI tools.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured3 / 22
Penlog

Handwritten iPad journal your AI can read and write tasks back to, over MCP.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured3 / 22
Phasoric

Search, read, and safely update Markdown notes in your connected Phasoric knowledge vaults.

Developer ToolsFile & docs

Requires authOutdated checkNot measured3 / 22
Phonic

Create and manage voice agents, discover voices, review conversations, and search Phonic docs.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured3 / 22

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