Remote Servers

Pay-per-call safety checks for AI agents: screen a crypto address or URL before you transact.

A verifiable museum of the agent era; browse and authenticate exhibits against Bitcoin

What the chain records about an address before you pay it, and whether a payment fits it

Hire six living AI agents on Algorand: watch free, pay per task in USDC over x402

B

bottrade

bot-trade.org

Benchmark for AI trading agents: historic market scenarios, public leaderboard

Cited Bitcoin coordination record search (~783k). Lightning. MCP. Not prices/chain analytics

Bitcoin research for AI agents: free answers, specialist Q&A, verification, evidence, timelines

Search AliExpress with real prices, live promo codes and the true post-cashback cost

Search and read the Celo developer documentation

Solana launches recorded at creation: what each claimed, hashed. Observations, never verdicts

Paid x402 tools (USDC per call): defi_yields, defi_protocol, scrape_markdown, scrape_summary

Free, read-only economic indicators for any country from the World Bank, IMF, FRED, OECD and others

Price settlement or annuity payments, judge a buyout offer, look up any US state's transfer rules

Official exchange rates from central banks: latest and historical rates plus currency conversion

Neutral value reference unit: live value, history, conversion and methodology

M

Macro Index

macroindex.org

Neutral, cited central-bank rate decisions, calendars, inflation releases and bond auctions

Login, save a 70-question personality result, and start a donation checkout.

M

MAA Intelligence

medicalaialliance.org

Korean listed medical AI, biotech and device companies linked to MFDS and FDA regulatory records.

Cross-exchange arbitrage opportunities and funding rate signals

DeFi protocol data: TVL, yield pools, and cross-chain analytics

US macroeconomic data: inflation, jobs, GDP, energy, and Treasury yields

FEC campaign finance data: candidate fundraising, donors, and spending

SEC filings, insider trades, and earnings data

Global economic data from World Bank and OECD

Real-time stock quotes, market indices, and institutional holdings

Ecosystem monitoring: service status and x402 activity metrics

Prediction market data and crowd-sourced probability forecasts

M

MetalCharts

metalcharts.org

Live and historical metal prices, COMEX inventory, CFTC positioning and Shanghai premiums

Pay-per-call data APIs for AI agents. USDC on Base via x402. 33 tools, no signup

Spending control for AI agents: approved budgets, a decision before each payment, signed receipts

R

RentBuy.org

rentbuy.org

Compare renting and buying a home over 30 years: scenarios, side-by-side comparisons, rent sweeps

C

commerce-validators

scienceswarm.org

Commerce validators: live EU VAT (VIES), EORI, email/MX lookups; IBAN/ABA/GTIN checksums; VAT rates

S

Sell The News

sellthenews.org

Real-time US stock market news, r/wallstreetbets sentiment, options GEX and max pain, daily recaps

Indicative fiat and crypto rates over MCP, paid per request via x402 at $0.0001/request

Read-only THORChain data: pools, network, nodes, vaults, transactions, Midgard history.

Thru blockchain explorer: blocks, transactions, accounts, and program ABIs on the Thru RISC-V L1

Sourced data on 95+ frontier-industry companies: profiles, dated milestones, funding, daily news

W

We Are Greater Than The Ultrarich

wegtultrarich.org

Turns billionaire and trillionaire fortunes into tangible, personalized, quotable comparisons

Daily GDP nowcasts for 47 economies, 12 regions and the world, plus weekly activity indices.

X

x402card: Virtual Cards + Freeland eSIM

x402card.org

Issue and top up x402 virtual cards or buy Freeland travel eSIMs with Base USDC

x402 image tools (USDC/Base): remove_background/upscale $0.02, resize/optimize $0.005; URL in/out

Trust scores for x402 sellers: wash-trading, real buyers, verdict. $0.02/score via x402 on Base

Free reports, EVM/Solana token payment links and capped zero-fee EVM USDC escrow. Wallet signatures.

K

Keito

osodevops

Track time, expenses, project archives, and invoices with Keito from AI agents

Technical analysis (RSI, MA, signal score) for 9,400+ global stocks, by ticker or name

I

ITC Prevailing Wage & Apprenticeship Guide

ovanova-solar

IRS prevailing wage & apprenticeship (PWA) rules for the clean-energy ITC: checks, cures, rates.

Invoicing for businesses and AI agents: invoices, crypto payments, compliance, Invoice Passports.

Let agents verify the seller and pay Billify invoices with x402 (USDC on Base).

Read-only smart-contract security intelligence for autonomous agents

Live trading-pipeline intelligence for AI agents: signal scoring, calibration, recorded outcomes

Screen China A-shares for dividend yield and value quality on live Eastmoney data

Business days, holidays and settlement dates for ACH, TARGET2, Bacs, 28 exchanges and 247 countries

I

INCOME 2

Patrickbo19

Autonomous earning and outcome routing: Agent Earn, Human Earn, Purchase Guard, and HYDRA

Risk score for Brazilian companies from registry, reputation and protest records by CNPJ

Tracks the TJSP (DEPRE) precatórios payment queue by debtor entity and payment order.

Queries bond protests by CPF/CNPJ at CENPROT SP. Requires your own Brazilian proxy.

E

ECB FX Reference Rates

pcp183

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

C

Customs Tariff Lookup (UK Trade Tariff + US HTS)

pcp183

Find HS codes and UK/US import duty rates for goods. $0.004 per call via x402

C

Country Macro Indicators (World Bank)

pcp183

Official World Bank macro indicators (GDP, inflation...) by country. $0.005/call via x402.

P

PEP Screening (Politically Exposed Persons)

pcp183

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