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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18504 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
adfraudit – Klickbetrug / Click Fraud

Wissen zu Klickbetrug, Anbieter-Vergleich und kostenloses Audit von adfraudit.com

Developer ToolsCode & DevOps

Responded88 ms14 / 22
Mlola UI

Mlola UI components, tokens and design rules for coding agents, with a markup checker

Developer ToolsCode & DevOps

Responded89 ms14 / 22
Sendiment

Cast, read and skip thoughts in sendiment, a public river of ephemeral thoughts shared with humans.

Developer ToolsCode & DevOps

Responded89 ms14 / 22
Knowledge for Agents

Search real problems, solutions, failed approaches and observed outcomes shared by AI agents.

Developer ToolsData access / search

Responded89 ms14 / 22
ChineseWorkSheet — Vector Hanzi Grid Geometry, Stroke Order & HSK Analyzer

Calculate Tian Zi Ge grids, decompose Hanzi strokes, grade HSK 3.0 words & convert Pinyin tones.

Developer ToolsCode & DevOps

Responded89 ms14 / 22
BioAI 日知

Read-only AI biopharma news, research records, companies, and source status from BioAI 日知.

Developer ToolsCode & DevOps

Responded90 ms14 / 22
DEEPBOM

Browser-local and CLI static evidence for deployed AI model artifacts.

Developer ToolsAI / LLM tooling

Responded90 ms14 / 22
getorderability: AIO orderability door

AIO orderability: may a capital product be ordered for a client category? Signed by the home node.

Developer ToolsCode & DevOps

Responded90 ms14 / 22
jmiszewicz - wycena i zapytania o strone internetowa

Wycena strony internetowej, brief projektu i wyslanie zapytania do pracowni jmiszewicz.

Developer ToolsCode & DevOps

Responded90 ms14 / 22
Toolcard

Cited checks for one MCP tool or a tools list, plus a called-or-ignored tally.

Developer ToolsCode & DevOps

Responded90 ms14 / 22
io.github.zp130221/pdfedit-mcp

Edit text inside existing PDFs: replace, delete, redact, insert, fill forms; original fonts kept.

Developer ToolsCode & DevOps

Responded90 ms14 / 22
fresh-feeds — trending/new/changed MCP servers + x402 change-data API

Trending/new/changed MCP servers: a liveness-probed freshness index + x402-paid change-data API

Developer ToolsCode & DevOps

Responded91 ms14 / 22
Seiche, LiquiLens and Undertow source data

Funding histories, bank filings and settlement data with source receipts, units and capture clocks.

Developer ToolsCode & DevOps

Responded91 ms14 / 22
ScreenshotMCP

Desktop and mobile website screenshots plus page context for AI agents and automation workflows.

Developer ToolsAutomation & workflows

Responded91 ms14 / 22
Red-Flag Greenflag

Read and participate in a public AI-agent consensus board through four MCP tools.

Developer ToolsCode & DevOps

Responded91 ms14 / 22
theoPros

Search and verify 79k state-licensed US contractors, checked weekly against the licensing boards.

Developer ToolsData access / search

Responded91 ms14 / 22
FabTally Valid

Validation suite: EU VAT (VIES), IBAN mod-97, email (MX+disposable), geo place lookup, VIN decode.

Developer ToolsCommunication & messaging

Responded91 ms14 / 22
Mercury / The Garden

A persistent public environment where AI agents leave artifacts and exchange asynchronous replies.

Developer ToolsCode & DevOps

Responded92 ms14 / 22
SF Bay Area Transit MCP

Plan San Francisco and Bay Area transit trips and check upcoming stop departures. Free, no API keys.

Developer ToolsCode & DevOps

Responded92 ms14 / 22
MemoryRouter

Persistent AI memory shared across Claude, ChatGPT, coding agents, and compatible MCP clients.

Developer ToolsAI / LLM tooling

Responded92 ms14 / 22
Eldertongue

Old English dictionary over MCP: headwords, inflection tables, form ID, Beowulf citations.

Developer ToolsCode & DevOps

Responded93 ms14 / 22
Skill History

Track download history for 70,000+ agent skills. Search and get daily snapshots.

Developer ToolsCode & DevOps

Responded93 ms14 / 22
Agent Revenue Auditor

Free preflight and exact-price discovery for paid website and AI-agent audits.

Developer ToolsCode & DevOps

Responded93 ms14 / 22
Agent Demand Registry

Find data sources and MCP servers for missing capabilities, report blockers, say what you'd pay for.

Developer ToolsCode & DevOps

Responded93 ms14 / 22

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