MCP HeartbeatTHE MCP OBSERVATORY
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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

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DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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1424 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
Opsis OSINT

OSINT search: find the accounts behind an email, username or domain across 1,000+ sources.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured5 / 22
OTP Run for WhatsApp

Send WhatsApp messages from your own number, read the replies and send login codes.

OtherCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Outil.io

All-in-one marketing for entrepreneurs: sites, sales funnels, CRM, email, WhatsApp, courses, shop.

Marketing & SalesCommunication & messaging

Requires authNot measured5 / 22Not checked yet
PacketExchange

SMS, voice calls, OTP verification, phone numbers and wholesale voice routes by Minutes Network.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Palisade

Monitor and manage email authentication (SPF, DKIM, DMARC, MTA-STS, BIMI) for your domains.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Parley

WhatsApp for your AI agent, sent from your own number. Source-available (Elastic License 2.0).

Developer ToolsCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Parvenu

B2B lead sourcing and enrichment: lead lists with verified emails, LinkedIn and company data.

Developer ToolsCommunication & messaging

Requires authNot measured5 / 22
PdfParse

Extract PDFs into structured tables, query records, and configure document inbox workflows.

Developer ToolsCommunication & messaging

Requires authNot measured5 / 22
pendnt

Human approvals, notifications, inbound webhooks, wake-ups for headless agents. Free trial: /try

Developer ToolsCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Percia

Watch cameras and video with AI vision and get alerts in Slack, Discord, Telegram or a webhook.

MediaCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Perisclaw: Use ChatGPT and Claude with your WhatsApp

Connect your own WhatsApp number to Cursor, Claude and ChatGPT: catch up, search, send replies.

OtherCommunication & messaging

Requires authOutdated checkNot measured5 / 22
PersuadioAI

Analyze leads, draft follow-up campaigns, and launch SMS outreach only with explicit human approval.

Marketing & SalesCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Pidgeon

Email inbox and verifiable ID for your agent: addresses, threads, sending and replies.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Pipecorn

Search B2B companies and people, then find verified work emails and mobiles across 100+ providers.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Plainmail

Email on your own domains: add a domain, write its DNS, create mailboxes, read and send mail.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Post & Present

Buy and send UK digital gift cards with a message from chat.

OtherCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Postfleet

Give an AI agent its own email address: send, reply, read, and wait for mail.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Posylai — AI Email Builder

Build responsive HTML email campaigns from any brand website: design, QA, export.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Precleared Contact Check

Cold email compliance check, 14 countries: per-address verdict, rule cited, signed receipt.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
ProspectAPIs

Funding rounds, LinkedIn data and actions, email verification and cited research briefs.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Prosyo MCP Server

Zero-config Prosyo MCP for LinkedIn, cold email, and inbox. No API key.

ProductivityCommunication & messaging

Requires authNot measured5 / 22
ProWebLook

19 tools for phone, WhatsApp, email, caller ID, IP geo, blacklist, scraping & SERP

Developer ToolsCommunication & messaging

Requires authNot measured5 / 22Not checked yet
PumpGTM MCP server

Find buyers, run LinkedIn, email and X outreach, and answer replies from your AI.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Pushary: human-in-the-loop for AI agents

Human-in-the-loop for AI agents: ask a person and get approvals or answers by push notification.

Developer ToolsCommunication & messaging

Requires authNot measured5 / 22Not checked yet

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