37 pay-per-call APIs for AI agents. Every call is settled in USDC on Base via x402 v2 — no signup, no API key, no subscription. Call the endpoint, get a 402 with the price, pay, retry with X-PAYMENT, get JSON.
LLM-powered analysis and synthesis.
| Endpoint | Price / query | Method | Free trial | What it does |
|---|---|---|---|---|
knowledge docs | $0.01 | POST | 5/day free | Multilingual knowledge search over 2,438 document chunks (9 languages). |
aisearch docs | $0.007 | POST | 5/day free | Web search with AI-generated summaries. |
aiverdict docs | $0.015 | POST | 2/day free | AI token verdict: SAFE / RISKY / SCAM with reasoning. |
sentiment docs | $0.03 | POST | 2/day free | News sentiment −100 to +100 for any symbol or topic. |
sbscore docs | $0.08 | POST | 2/day free | AI score 0–100 for any stock or crypto, with reasoning. |
researchmemo docs | $0.25 | POST | 1/day free | AI investment memo: thesis, bull/bear case, risks, sources. |
docextract docs | $0.015 | POST | 1/day free | Document AI: PDF/image to structured JSON (text, tables, forms). |
Market data, signals and fund intelligence.
| Endpoint | Price / query | Method | Free trial | What it does |
|---|---|---|---|---|
defi docs | $0.0008 | POST | 10/day free | DeFi token intelligence: TVL, APY, pools, flows. |
defiyield docs | $0.001 | GET | 10/day free | Top DeFi yield pools by APY. |
perpfunding docs | $0.001 | GET | 10/day free | Perp funding rates across Binance, Bybit, OKX, Hyperliquid. |
stocks docs | $0.003 | POST | 5/day free | Stock, crypto and index quotes with daily/weekly/monthly series. |
polymarket docs | $0.006 | GET | 5/day free | Polymarket odds, implied probabilities, 24h volume. |
tokenscreener docs | $0.008 | GET | 5/day free | Screen new DEX pairs by liquidity, volume, price action. |
marketdata docs | $0.01 | GET | 5/day free | Crypto + stock board in one call: BTC/ETH/SOL, SPY/QQQ/DIA, VNINDEX. |
13fintel docs | $0.2 | GET | 1/day free | 13F hedge-fund holdings by CIK with AI change summary. |
earningspack docs | $0.5 | POST | 1/day free | Earnings prep: date, consensus EPS/revenue, filings, AI preview. |
Security and compliance screening.
| Endpoint | Price / query | Method | Free trial | What it does |
|---|---|---|---|---|
rugcheck docs | $0.005 | POST | 5/day free | Token safety check: rug-pull risk score with reasons. |
amlscreen docs | $0.75 | POST | 1/day free | AML/KYT wallet screening: risk score for any address. |
contractaudit docs | $1.5 | POST | 1/day free | Smart contract security scan for vulnerabilities. |
Raw data feeds and extraction.
| Endpoint | Price / query | Method | Free trial | What it does |
|---|---|---|---|---|
tokenprice docs | $0.0008 | GET | 10/day free | Real-time crypto token prices with 24h change. |
news docs | $0.0008 | GET | 10/day free | Fresh crypto headlines with source and summary. |
fxrates docs | $0.0008 | GET | 10/day free | FX rates for 160+ currencies. |
weather docs | $0.001 | GET | 10/day free | Current weather by latitude/longitude. |
gastracker docs | $0.001 | GET | 10/day free | Live Base + Ethereum gas prices, slow/standard/fast tiers. |
random docs | $0.001 | GET | 10/day free | Novelty randomness: facts, coinflip, dice. |
chain docs | $0.002 | POST | 10/day free | Read ERC20 balances and EVM chain data on Base + Ethereum. |
chainread docs | $0.002 | GET | 10/day free | Native + USDC balance for any address on Base/Ethereum. |
sec8k docs | $0.002 | GET | 10/day free | Latest SEC 8-K filings by ticker. |
macro docs | $0.002 | GET | 10/day free | US macro indicators (CPI, Fed rate, unemployment, GDP) + FOMC calendar. |
pdf docs | $0.002 | POST | 10/day free | Extract clean text from any PDF (up to 20MB / 200 pages). |
markdown docs | $0.002 | POST | 10/day free | Convert any URL to clean, LLM-ready markdown. |
academic docs | $0.004 | GET | 5/day free | Search 200M+ academic papers with abstracts and citations. |
dnswhois docs | $0.005 | POST | 5/day free | DNS records + WHOIS (RDAP) + SSL certificate for any domain. |
websearch docs | $0.01 | POST | 5/day free | Google web/news/image search, deduplicated and relevance-scored. |
trendsintel docs | $0.1 | GET | 2/day free | Google Trends data + AI read on the trend and opportunity. |
Meta-tools and infrastructure.
| Endpoint | Price / query | Method | Free trial | What it does |
|---|---|---|---|---|
agentrecommend docs | $0.008 | POST | 5/day free | Meta-tool: describe a task, get ranked API recommendations. |
gpubroker docs | $1 | POST | 1/day free | Pay-per-job GPU rental: we book the cheapest verified spot GPU, you get SSH. |
Every endpoint (except GPU rental, which books real hardware) includes a daily free quota, per IP address. No account, no API key, no payment — just call the endpoint. Free calls bypass the paywall automatically; the response header X-Free-Remaining tells you how many free calls you have left today. When the quota is used up, the normal 402 pay flow kicks in.
Free-trial usage is logged separately and never charged. GPU rental has no free trial — booking costs real money.
exact scheme · USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base (eip155:8453). Facilitators: Coinbase CDP and PayAI (no API key needed). Every settlement is published on the public settlement log and verifiable on-chain.
https://api.mekongtradeintel.com/tools/{name}