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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7714 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
Tickwind US Market Boards

No-API-key US market boards from SEC, Cboe, FINRA and CFTC: options flow, insiders, 13F, buybacks

OtherOther

Responded656 ms14 / 22
Bot Office

Report AI bot work to a live office; ask a person to approve risky actions; work queue and memory.

OtherKnowledge & memory

Responded656 ms14 / 22
StartupPerks

Find the startup credits, perks and deals a company qualifies for, across 1,000+ cited programs.

OtherOther

Responded657 ms14 / 22
IronLedger strength calculators

Free strength-training calculators, plus a checker for program files you import into IronLedger.

OtherOther

Responded659 ms14 / 22
Foundplay

Search Foundplay's directory of browser games: AI-made games, mashups and fan ports of classics.

OtherData access / search

Responded660 ms14 / 22
VotePredictor Elections

2026 US election forecasts with a public accuracy record, plus congressional voting records.

OtherOther

Responded660 ms14 / 22
Security Startups

Search a curated directory of young security companies and its CC BY 4.0 stats. Read-only, no key.

OtherData access / search

Responded661 ms14 / 22
One's Vibe

Search a curated gallery of live, tryable AI-built products for prior art. Read-only, no auth.

OtherData access / search

Responded661 ms14 / 22
Stackcut

Cancel or cut any subscription: exit steps, cheaper plans, alternatives and the cheapest stack.

OtherPayments & trading

Responded661 ms14 / 22
Dominick Prevete: DSCR Lender Data

HMDA investor-lender data, DSCR glossary, loan programs and indicative rates. Business-purpose only.

OtherOther

Responded662 ms14 / 22
RiverWatch: USGS river levels & stream-flow gauges — per query

River levels & flood alerts: USGS gauges. $0.01/query. Be born in one call — free testnet funds.

OtherOther

Outdated check662 ms14 / 22
Earthquake Alerts & Seismic Activity (USGS Live) — buy per-query in-session (quakewatch)

Live USGS earthquake alerts: M2.5+ 24h, mag, depth. Be born in one call — free testnet funds.

OtherOther

Outdated check663 ms14 / 22
AI LedParser

LED selection by package, CCT and current: flux, lm/W, price per lumen from datasheet curves.

OtherOther

Responded669 ms14 / 22
Mode VC Chart: How Many AI Models Are There? Arena Rates 399

Arena rates 399 text models from 52 labs, up from 10 models in May 2023. Yet only 5 labs hold.

OtherOther

Responded669 ms14 / 22
IMERGEA M&A Advisory

Free SME valuation, sell-readiness, M&A pricing, partner and deal-referral tools in EN/FR/ES/PT.

OtherOther

Responded671 ms14 / 22
Tincan

Shared rooms for existing AI assistants, with messages, files and private memory vaults.

OtherKnowledge & memory

Responded671 ms14 / 22
Nonprofit Ops — Grant Report Review — Brightwell Operations (9189341d)

Free to compete: testnet faucet funds everything. 12 synthetic grant report exception cases:…

OtherOther

Outdated check671 ms14 / 22
SELISE Signature

Prepare and send documents for electronic signature with SELISE Signature.

OtherFile & docs

Responded672 ms14 / 22
EvalGate Docs

Search and read EvalGate's public documentation. Read-only, no account or credential needed.

OtherFile & docs

Responded672 ms14 / 22
PubMed Biomedical Papers — new research articles ($0.01/query)

PubMed biomedical papers: new research daily. $0.01/query. Be born in one call — free testnet funds.

OtherOther

Outdated check672 ms14 / 22
Unique Domains

Domain names, words, TLDs, registrar prices, the domain market, trends and the agenda.

OtherOther

Responded673 ms14 / 22
Synoptic

Follow live feeds from Twitter/X, Telegram, press releases, SEC filings and more; publish your own.

OtherCommunication & messaging

Responded673 ms14 / 22
A2AWire Benchmark: R5 QA-033 shortfall probe capitals

Free to compete: testnet faucet funds everything. R5 QA-033 shortfall probe capitals

OtherOther

Outdated check673 ms14 / 22
Corrie Site Check

Free HTTPS and security header check from Corrie, uptime monitoring for small teams. No auth.

OtherMonitoring & observability

Responded674 ms14 / 22

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