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.

Connect your agent

3313 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
Altscan explorers

Keyless, read-only BNB Chain and Ethereum data: transactions by hash, tokens with a lookalike check

Finance & CryptoPayments & trading

Outdated check194 ms14 / 22
ToolPick

Find and live-check the paid x402 API for an agent task, ranked by real 30-day payers and price.

Finance & CryptoPayments & trading

Responded195 ms14 / 22
Batch Sanctions Screening

Screen up to 100 names vs sanctions and US export lists. $0.50/batch via x402.

Developer ToolsCode & DevOps

Outdated check195 ms14 / 22
Tariff & HS Code Duty Finder

Find an HS code, HTS code or customs code, and read the customs duty or import tax.

Finance & CryptoPayments & trading

Outdated check197 ms14 / 22
StackDetect

Detect a website's tech stack (frameworks, hosting, CDN, analytics). By Crypto Money Maker

Finance & CryptoPayments & trading

Responded200 ms14 / 22
Crypto Due Diligence

Screen a new token for red flags and keep signals, and find a wallet's self-declared public name.

Finance & CryptoPayments & trading

Outdated check200 ms14 / 22
2027 Tax Brackets and Standard Deduction MCP

2027 federal income tax brackets and standard deduction from IRS Rev. Proc. 2026-35.

GovernmentCode & DevOps

Outdated check200 ms14 / 22
Agentic Finance Graph

Ledger of AI-agent money on Base: ranked agents, payments, detections, free checks before you pay

Finance & CryptoPayments & trading

Outdated check204 ms14 / 22
PkgGuard

Dependency scan for agents: known CVEs and malicious packages via OSV.dev. By Crypto Money Maker

Finance & CryptoPayments & trading

Responded205 ms14 / 22
TASignal

Read-only crypto indicators, risk sizing and rule backtests. Not financial advice.

Finance & CryptoPayments & trading

Responded206 ms14 / 22
Mortgage Rates Today MCP

Mortgage rates today: Freddie Mac weekly 30 and 15 year fixed averages, history and payment math.

Real Estate & PropertyPayments & trading

Outdated check206 ms14 / 22
WebRead

Turn any public web page into clean Markdown for LLMs; respects robots.txt. By Crypto Money Maker

Finance & CryptoFile & docs

Responded208 ms14 / 22
Świadectwo Energetyczne 24

Polish energy performance certificates: pricing, requirements, order, documents, payment link

Finance & CryptoPayments & trading

Responded209 ms14 / 22
ECB FX Reference Rates

Official ECB euro reference rates for invoices and tax returns. $0.004/call via x402.

Finance & CryptoPayments & trading

Outdated check209 ms14 / 22
CalculatorLib

Year-correct, cited payroll and tax numbers for Asia (Vietnam first) plus ~8,000 calculators.

Finance & CryptoPayments & trading

Responded212 ms14 / 22
io.github.sly13/cryptoetf

Live spot crypto ETF flows for 16 assets and their funds, CEFI index and prices.

Finance & CryptoCode & DevOps

Responded213 ms14 / 22
AlgoVault — Crypto Quant Trade Calls

The Brain Layer for AI Trading Agents — quant calls + cross-venue arb across perp venues via MCP.

Finance & CryptoPayments & trading

Outdated check213 ms14 / 22
PEP Screening (Politically Exposed Persons)

Check if a person is a PEP (Wikidata public offices) during KYC. $0.02/call via x402.

Developer ToolsCode & DevOps

Outdated check214 ms14 / 22
Drug Label, Recall & Adverse Event Check (openFDA)

FDA label warnings, recalls and adverse event counts for a drug. $0.003/call via x402.

Developer ToolsCode & DevOps

Outdated check219 ms14 / 22
SolVerdict

Safety check for Solana SPL/Token-2022 mints: SAFE/CAUTION/DANGER + reasons. By Crypto Money Maker

Finance & CryptoPayments & trading

Responded224 ms14 / 22
Market Intelligence API

Market data for AI agents via x402: token safety, DeFi yields, order flow, SEC filings, macro, perps

Finance & CryptoData access / search

Responded225 ms14 / 22
Fjordgull

Fjordgull omega-3 subscription: product, price and delivery status. No orders or payment.

Finance & CryptoPayments & trading

Responded226 ms14 / 22
GasNow

Live crypto fees: USDT transfer costs on 12 networks, exchange withdrawals, bridges and gas.

Finance & CryptoCode & DevOps

Outdated check226 ms14 / 22
vidit (demo)

Demo of a Swiss tax service for AI agents: AI-drafted answers, sample quotes, nothing validated yet.

Finance & CryptoPayments & trading

Responded227 ms14 / 22

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