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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2873 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
MiConvert File Converter

Convert files by URL: OFD→PDF, 3D/CAD (STEP, STL, GLB), images, audio, video, documents.

MediaFile & docs

Responded162 ms15 / 22
Moxie Docs

Living docs and MCP context for GitHub repos — conventions, gaps, and source-cited pages on merge.

Developer ToolsCode & DevOps

Responded171 ms15 / 22
Mailvett: Email Validation API for AI Agents

Mailvett: validate emails. MX, provider, disposable/role/free flags, typo fix, verdict.

Developer ToolsCommunication & messaging

Responded174 ms15 / 22
Senzing

Entity resolution — data mapping, SDK code generation, docs search, and error troubleshooting

Developer ToolsData access / search

Responded189 ms15 / 22
Harshith Nayaka L portfolio docs

Read-only MCP server over the developer docs for the portfolio's JSON API, MCP, A2A and NLWeb.

Developer ToolsCode & DevOps

Responded194 ms15 / 22
massprint

Print-on-demand for agents: upload a PDF, get a printed book delivered in India.

Developer ToolsFile & docs

Responded197 ms15 / 22
SalesBlink Cold Email

Cold email sequences, leads, templates, senders, inbox, and analytics via the SalesBlink API.

ProductivityCommunication & messaging

Responded207 ms15 / 22
FLOGVIT.bible

Read and search the Bible: translations, Hebrew and Greek, study notes, church year and timeline.

Developer ToolsCode & DevOps

Responded218 ms15 / 22
BlockVectra Docs: Robinhood Chain & EVM

Search and read Robinhood Chain and EVM RPC/API docs. No account, API key or local install.

OtherData access / search

Responded225 ms15 / 22
Traffic Parrot

Traffic Parrot simulates APIs and messaging. Request or withdraw a trial, read docs, send feedback.

OtherCommunication & messaging

Responded239 ms15 / 22
Kairos Research

Base wallet activity and contract checks, web/PDF to Markdown, by an AI agent (x402).

Finance & CryptoPayments & trading

Responded255 ms15 / 22
Context Atlas

Find llms.txt, docs, MCP servers, skills and CLIs for a tech stack, for coding agents.

Developer ToolsCode & DevOps

Responded259 ms15 / 22
BillionVerify

Email verification for AI agents: verify single or bulk emails, check credits and history.

Developer ToolsCommunication & messaging

Responded265 ms15 / 22
Laravilt

Laravilt docs, packages and plugins for agents: a Laravel admin panel on Inertia with Vue or React.

Developer ToolsCode & DevOps

Responded270 ms15 / 22
Pipefire

Cold email for agencies: SPF, DKIM, DMARC, blacklist checks, plus campaigns and replies.

Marketing & SalesCommunication & messaging

Responded297 ms15 / 22
Printags docs

Answers questions about Printags cards, prices, ordering, the API and MCP servers. Read-only.

OtherOther

Responded297 ms15 / 22
uniwire

Electrical single-line and multi-line diagrams: build, check (NF C 15-100, IEC 60364), draw, PDF.

Developer ToolsCode & DevOps

Responded301 ms15 / 22
IMBA Agent Docs

Read-only IMBA Agent API docs MCP. No register, deposit, buy, or withdraw.

Developer ToolsCode & DevOps

Responded314 ms15 / 22
Email Deliverability Checker

Check SPF, DKIM, DMARC, blocklists, reverse DNS and email headers against Gmail/Yahoo sender rules.

ProductivityCommunication & messaging

Responded318 ms15 / 22
Pressa - LaTeX to PDF

Compile LaTeX to PDF without installing TeX Live. No API key needed to start.

Developer ToolsCode & DevOps

Responded324 ms15 / 22
MotoGP (Race Results)

Live MotoGP, Moto2 and Moto3 standings, results, calendar, riders, live timing and news.

Developer ToolsCode & DevOps

Responded395 ms15 / 22
Scento Perfume API (MCP server)

Scento perfume API and MCP server: notes, families, similar scents for 1,600+ perfumes. No key.

ProductivityFile & docs

Responded408 ms15 / 22
PDF Text Extractor for AI Agents

x402 PDF text, pages, and metadata for AI/RAG. $0.0015 per successful PDF.

Developer ToolsCode & DevOps

Responded415 ms15 / 22
Emailens MCP

Analyze, audit, fix and diff HTML, MJML, Maizzle and React Email across 21 email clients.

Developer ToolsCommunication & messaging

Responded437 ms15 / 22

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