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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2911 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
Ocrspace

OCR.space MCP — wraps the OCR.space API (ocr.space) for image/PDF → text OCR.

MediaCode & DevOps

Outdated check103 ms13 / 22
Leadmagic

LeadMagic MCP — wraps the LeadMagic B2B email-finder API (leadmagic.io)

Developer ToolsCommunication & messaging

Outdated check108 ms13 / 22
Outdated check111 ms13 / 22
Snov

Snov.io MCP — B2B email finder + contact enrichment + domain search (snov.io)

Developer ToolsCommunication & messaging

Outdated check116 ms13 / 22
Outdated check118 ms13 / 22
Outdated check120 ms13 / 22
Xome

Xome MCP — US residential foreclosure/REO/short-sale auction calendar and property facts, sourced…

Real Estate & PropertyCode & DevOps

Outdated check120 ms13 / 22
Outdated check129 ms13 / 22
Sec Financial Statements

SEC Financial Statement & Notes data sets — dimensional facts + note text.

Developer ToolsCode & DevOps

Outdated check131 ms13 / 22
Prayer Times

Islamic prayer times & calendar MCP (Aladhan API). Keyless.

Developer ToolsCode & DevOps

Outdated check140 ms13 / 22
Remove AI Meta

Inspect and strip EXIF, XMP, IPTC, C2PA, PDF info, and Word properties.

OtherFile & docs

Responded183 ms13 / 22
Reoon

Reoon MCP — wraps the Reoon Email Verifier API (reoon.com)

Developer ToolsCommunication & messaging

Outdated check189 ms13 / 22
Outdated check205 ms13 / 22
Trykitt

TryKitt MCP — wraps the TryKitt.ai B2B email finder API (trykitt.ai)

Developer ToolsCommunication & messaging

Outdated check308 ms13 / 22
io.github.xpaysh/ecommerce-prompts-mcp

Free copy-and-run ChatGPT prompts for online stores: 924 prompts, 43 categories + 10 tasks.

E-commerceCode & DevOps

Responded414 ms13 / 22
arXiv & OpenAlex Academic Search MCP

Peer-reviewed scientific paper & arXiv preprint search MCP with citations, abstracts & PDF links.

Developer ToolsKnowledge & memory

Responded434 ms13 / 22
SendaFax

Send a fax in Australia (+61). Pay only if it delivers. Email receipt. No card at send.

ProductivityCommunication & messaging

Responded590 ms13 / 22
Regulatory Catalysts

Regulatory Catalysts MCP — high-value biotech regulatory calendar events (keyless).

Developer ToolsCode & DevOps

Outdated check898 ms13 / 22
Local Maps B2B Lead Extractor MCP

Local business & Google Maps B2B lead extractor MCP: phone, email, website, DNS & SaaS tech stack.

Developer ToolsCommunication & messaging

Responded1460 ms13 / 22
Activecampaign

ActiveCampaign MCP Pack — email marketing + CRM (API v3).

Marketing & SalesCommunication & messaging

Outdated check6687 ms13 / 22
handoff — agent swarm coordination

Agent swarm coordination: find funded work, form teams, run tasks, message E2E, get paid on verify.

Developer ToolsCode & DevOps

Outdated check7602 ms13 / 22
Qt Documentation

Qt 5 and Qt 6 framework and product docs: Qt Creator, MCUs, Squish, Coco and more.

Developer ToolsFile & docs

Outdated check8 ms12 / 22
Email & SMS Marketing Cost Calculator

Compare monthly email and SMS marketing costs across 11 platforms, with dated official sources.

ProductivityCommunication & messaging

Outdated check51 ms12 / 22
Zovo Nonogram Maker

Make printable nonogram puzzles for teachers, students and puzzle fans as a PDF with an answer key.

EducationCode & DevOps

Outdated check58 ms12 / 22

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