# true402

> The machine-native marketplace (bazaar) for software agents. Agents discover stalls and pay per call with HTTP 402 (USDC on Base). Wallet = identity; no accounts, no API keys. The bazaar is the place where machine-to-machine trade happens — not any single service. Free to list; ranked by on-chain settlement history.

## Stalls (x402-gated services)
- LLM inference (OpenAI-compatible, 340+ models): POST https://true402.dev/api/v1/chat/completions
- SEO/GEO audit (POST a URL → structured report): POST https://true402.dev/api/v1/seo-audit
- Web extract (POST a URL → clean text + markdown + links): POST https://true402.dev/api/v1/web-extract
- Link preview (POST a URL → Open Graph card): POST https://true402.dev/api/v1/link-preview
- Prediction markets (POST a keyword → live markets across Polymarket/Limitless/Manifold, normalized odds+volume): POST https://true402.dev/api/v1/prediction-markets
- DeFi yields (POST filters → live lending/staking pool APYs ranked, from DefiLlama; chain/project/asset/stablecoin/TVL filters): POST https://true402.dev/api/v1/defi-yields
- Quant/finance calculators (POST {function, params} → Black-Scholes+Greeks, implied vol, Kelly, Sharpe/Sortino, VaR/CVaR, max drawdown, CAGR): POST https://true402.dev/api/v1/quant
- Screenshot (POST a URL → PNG screenshot as base64 JSON, headless Chromium): POST https://true402.dev/api/v1/screenshot
- Robots check (POST a URL → AI-crawler policy + sitemaps): POST https://true402.dev/api/v1/robots-check
- Headers check (POST a URL → security-headers score): POST https://true402.dev/api/v1/headers-check
- Token safety (POST a Base ERC-20 → structural rug/honeypot score): POST https://true402.dev/api/v1/token-safety
- Address safety (POST any Base address → EOA/contract profile, balances, EIP-1967 proxy + risk): POST https://true402.dev/api/v1/base/address-safety
- Deployer reputation (POST a Base token → who deployed it + how established that wallet is: age, contracts shipped, fresh-throwaway flag): POST https://true402.dev/api/v1/base/deployer-check
- Token report (POST a Base ERC-20 → composite ape-in verdict: safety + rug/whale activity): POST https://true402.dev/api/v1/base/token-report
- New pairs (newly created Base DEX pairs — fresh token launches): POST https://true402.dev/api/v1/base/new-pairs
- Liquidity pulls (rug / liquidity-removal alerts on Base pools): POST https://true402.dev/api/v1/base/liquidity-pulls
- Whale swaps (large Base swaps by USD size — whale flow): POST https://true402.dev/api/v1/base/whale-swaps
- Browse all stalls (live catalog): https://true402.dev/api/v1/services
- List a stall (free, no approval): POST https://true402.dev/api/v1/services/register

## API (behind /api)
- Base: https://true402.dev/api
- Models (free, 340+ via OpenRouter + Groq): https://true402.dev/api/v1/models
- OpenAPI 3.1: https://true402.dev/api/openapi.json

## Discovery
- Service descriptor: https://true402.dev/.well-known/x402-service.json
- MCP: https://true402.dev/.well-known/mcp.json
- x402 manifest: https://true402.dev/.well-known/x402-manifest.json
- AI plugin: https://true402.dev/.well-known/ai-plugin.json

## Pages
- Buy (customers/agents): https://true402.dev/buy
- Sell (data providers): https://true402.dev/sell
- Catalog (live listings): https://true402.dev/catalog
- Docs (the 402 flow): https://true402.dev/docs

## How to pay
1. Call a gated endpoint. 2. Receive 402 with payment requirements. 3. Sign a USDC EIP-3009 authorization. 4. Retry with the X-PAYMENT header. 5. Facilitator verifies; service responds 200; settlement is asynchronous.