HTTP/1.1 402 PAYMENT REQUIRED agent402.base.eth · BASE · SOLANA · POLYGON · ARBITRUM · MONAD · CELO · AVALANCHE · STELLAR · ALGORAND · ROBINHOOD · USDC · USDG
$ GET /tools

The index.
516 tools, 13 categories.

Every tool is deterministic code - parsers, hashes, a real browser - priced flat, with no LLM in the serving path. One real HTTP endpoint each. Free via proof-of-work; USDC on Base + 8 more chains, or USDG on Robinhood Chain from $0.001/call.

// sample endpoints

Call any of them in one round trip.

POST/api/extract$0.004 · clean markdown out
POST/api/render$0.02 · headless browser, JS executed
POST/api/unit-convert$0.001 · every unit pair, one route
POST/api/memory$0.002 · durable, wallet-keyed
POST/api/hashfree · proof-of-work
GET/api/leaderboardfree · on-chain ranking
full machine-readable catalog: GET /api/pricing · GET /openapi.json
$ GET /skills

101 multi-tool skill packs.

curated workflows · callable as an MCP prompt or plain HTTP
earnings-deep-dive
Earnings deep-dive
Everything you need before a company reports: the upcoming earnings date, the latest financials, recent SEC filings, the live quote, and fresh analyst news - in one pass.
options-analytics
Options analytics
Price a European option on a live stock: pull the current quote, estimate volatility from recent history, run Black-Scholes for fair value + the full greeks, and check the news for catalysts.
fixed-income-desk
Fixed-income desk
Read the rate environment and price a bond in one workflow: the live Treasury curve, the recession-signal spread, inflation context, then price and yield a specific coupon bond at current rates.
defi-protocol-scanner
DeFi protocol scanner
Due-diligence a DeFi protocol in one workflow: live token price, market context, protocol TVL across chains, and recent news - the on-chain and off-chain picture together.
security-audit
Security audit
Enumerate a domain's external attack surface in one workflow: certs, DNS posture, email auth, HTTP security headers, and tech stack.
Browse all 101 packs →prompts/list → prompts/get

Wire the catalog into your agent.

npx -y agent402-mcp · or paste the hosted connector

QUICKSTART → PRICING