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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41469 servers

Ordered by checks passed
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
IMBA Agent Docs

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

Developer ToolsCode & DevOps

Outdated check314 ms15 / 22
io.github.tryflask/flask

Video review for agents: upload renders, read time-coded feedback, iterate version by version.

MediaCode & DevOps

Responded315 ms15 / 22
McpStamp Leave Tracker

Employee leave and PTO: requests, approvals, balances, who is out, and conflict checks.

Developer ToolsCode & DevOps

Responded317 ms15 / 22
dev.cz-agents/isir

Czech insolvency register (ISIR) — active/historical insolvency & bankruptcy by IČO or person.

Developer ToolsCode & DevOps

Responded318 ms15 / 22
eSIM SOS

Find travel eSIM plans, compare prices and create an order the user pays by link.

TravelData access / search

Responded318 ms15 / 22
CentreCareOS MCP by usefulapi

Read students, parents, attendance, invoices, rooms and daily reports in CentreCareOS.

Finance & CryptoPayments & trading

Responded318 ms15 / 22
UK Statutory Sick Pay and Maternity Pay

UK Statutory Sick Pay (April 2026 rules), Maternity Pay and National Living Wage from gov.uk.

GovernmentCode & DevOps

Responded318 ms15 / 22
Rein Agent Risk Scale

Agent Risk Rating, A–D (NR = not rated): self-declared and unverified; not a credit rating.

Developer ToolsCode & DevOps

Outdated check318 ms15 / 22
Email Deliverability Checker

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

ProductivityCommunication & messaging

Outdated check318 ms15 / 22
xyz.spiralstake/leverage

Leveraged-yield router on Morpho. List strategies, simulate, and build UNSIGNED txs.

OtherOther

Responded319 ms15 / 22
Wealthville

Solana + EVM liquidity-pool scores: Enter/Hold/Exit verdicts and 0-100 Wealthville Score.

Finance & CryptoPayments & trading

Outdated check319 ms15 / 22
AgentBuffs

Find MCP servers and agent skills for a job, ranked, with install config for your client.

Developer ToolsCode & DevOps

Outdated check319 ms15 / 22
FeedB MCP by usefulapi

Read collected feedback with ratings, categories and sentiment, newest first, in FeedB.

Developer ToolsCode & DevOps

Responded320 ms15 / 22
Index Agentica

Search a curated directory of agent tools, MCP servers, APIs, protocols and skills. No auth.

Developer ToolsData access / search

Outdated check320 ms15 / 22
Spala Public MCP

Discovery, OAuth, project operations, and exact project MCP handoff for Spala backend projects.

Developer ToolsCode & DevOps

Outdated check320 ms15 / 22
SaaSCity

Audit your site, pick from 1,600+ launch directories by DR and link type, and list on SaaSCity.

OtherOther

Responded321 ms15 / 22
Pressa - LaTeX to PDF

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

Developer ToolsCode & DevOps

Outdated check324 ms15 / 22
Domain availability and quotes (demo)

Is a .com/.net/.org name free, and a signed one-year quote. Demo seller, orders refused. Free.

OtherOther

Outdated check324 ms15 / 22
ScrapeOwl MCP by usefulapi

Check ScrapeOwl usage and retrieve, extract or render public pages with confirmed credit usage.

Developer ToolsCode & DevOps

Responded325 ms15 / 22
Live weather and air quality (GAIA)

Weather, air quality and nearest live sensors anywhere, each with a signed receipt. Free, no key.

Data & AnalyticsData access / search

Outdated check325 ms15 / 22
io.github.MarvinRey7879/framefetch

Any social-video URL → transcript, metadata, frames, OCR, summary, search, Q&A. MCP server + x402.

MediaCode & DevOps

Responded327 ms15 / 22
MCP security checks — WARDEN and HISTOR

Scan MCP tool definitions for poisoning, look up server history, count tool-list tokens. Free.

Developer ToolsData access / search

Outdated check327 ms15 / 22
DogsLife

Puppy potty, sleep, walk, feeding, adult-weight and dog-age calculators, in 23 languages.

OtherOther

Outdated check328 ms15 / 22
Twice Commerce MCP by usefulapi

Read orders, customers, catalog, stock and availability; add order comments in Twice Commerce.

Finance & CryptoPayments & trading

Responded329 ms15 / 22

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