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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2872 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
Getlead

Find B2B leads with verified work emails, find and verify emails, and run cold email outreach.

Marketing & SalesCommunication & messaging

Responded173 ms16 / 22
A2UI Atomic Catalog docs

Search the A2UI Atomic Catalog's own docs: auth, versioning, pricing, API surface.

OtherData access / search

Responded225 ms16 / 22
Campaign Pack

Turn a product photo and a brief into a full ad campaign: scripts, stills, client-ready PDF.

Marketing & SalesFile & docs

Responded720 ms16 / 22
Cerebrium Docs

Search the Cerebrium docs: deployment, cerebrium.toml, hardware, endpoints. Also sends feedback.

OtherData access / search

Responded776 ms16 / 22
Responded70 ms15 / 22
A Corrida dos Bairros: preço do m² por bairro

Preço do m² por bairro em 109 cidades do Brasil, nos 27 estados. Dados abertos, todo mês.

ProductivityFile & docs

Responded72 ms15 / 22
Unlock Pulse

Token unlock calendar for the next 60 days, rated by size vs circulating supply. Free, no key.

Developer ToolsCode & DevOps

Responded74 ms15 / 22
receivemail.dev

Disposable email inboxes for agents and tests: create an address, wait for the email. No signup.

ProductivityCommunication & messaging

Responded77 ms15 / 22
TanStarter Docs

Search published TanStarter documentation. Read-only and public.

Developer ToolsFile & docs

Responded78 ms15 / 22
Arabic Pipeline API

Pay-per-call Arabic text, audio and document utilities over x402. USDC on Base, no API key.

Finance & CryptoPayments & trading

Responded79 ms15 / 22
CometChat Docs

CometChat docs search + implementation bundles: add chat, voice, video & moderation to your app.

MediaCode & DevOps

Responded90 ms15 / 22
Formquote

Published prices and licence fit for email verification, sound effect packs and font licences.

Developer ToolsCommunication & messaging

Responded96 ms15 / 22
Remocn: Remotion MCP server

Hosted MCP for Remotion videos: search Remocn components, read docs, plan a video, preview it.

MediaData access / search

Responded113 ms15 / 22
Stackhal

Outside-in DNS, email security, SEO, GEO and app-link checks plus developer utilities.

Developer ToolsCommunication & messaging

Responded115 ms15 / 22
Nifra docs

Nifra docs, runnable examples, and API types as an MCP server for any AI assistant.

Developer ToolsCode & DevOps

Responded143 ms15 / 22
localscreenshot

Screenshot API for AI agents. Any public page as image or PDF, banners hidden, 227 countries.

MediaFile & docs

Responded156 ms15 / 22
IntoDNS.ai DNS & Email Security Scanner

DNS and email security: check SPF, DKIM, DMARC, DNSSEC, DANE and build the records. 45 tools.

ProductivityCommunication & messaging

Responded156 ms15 / 22
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

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