![\"Dexter\"](\"https://raw.githubusercontent.com/Dexter-DAO/dexter-x402-sdk/main/assets/dexter-wordmark.svg\")
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\n x402 API marketplace skill for lobster.cash agents. Pay-per-call access to a continuously growing catalog of verified APIs.\n
\n\n\n Browse the marketplace → · Get a wallet → · Compatibility guide →\n
\n\n---\n\n## Quick Start\n\n### 1. Install the lobster.cash wallet (if you haven't already)\n\n```bash\nopenclaw plugins install @crossmint/lobster.cash\n```\n\nThen tell your agent: *\"Set up my wallet\"* — open the consent link and approve.\n\n### 2. Install the Dexter marketplace skill\n\n```bash\nopenclaw plugins install @dexterai/dexter-lobster\n```\n\n### 3. Start using paid APIs\n\nAsk your agent:\n\n- *\"What smart money wallets are buying right now?\"*\n- *\"Scan this token contract for honeypots\"*\n- *\"Get Polymarket odds on the next election\"*\n- *\"Run this prompt through Claude via OpenRouter\"*\n\nThe skill searches the Dexter bazaar, shows you pricing, and when you want to call an endpoint, lobster.cash handles the payment through the Dexter facilitator.\n\n## How It Works\n\n```\nAgent → dexter-lobster skill → Dexter Bazaar (search / pricing)\n → lobster.cash (payment delegation)\n → x402.dexter.cash (settlement)\n → Solana (on-chain)\n```\n\n**Search** and **pricing** are free. When the agent calls a paid endpoint, it describes the payment intent and [lobster.cash](https://lobster.cash) handles execution through the Dexter facilitator. The skill never touches private keys, never builds transactions, never signs anything.\n\n## What's Available\n\nThe Dexter bazaar indexes x402 endpoints from across the ecosystem. Featured providers include Nansen, Alchemy, Allium, CoinGecko, OpenRouter, Exa, Dome, Quick Intel, Quicknode, Laso Finance, and many more -- covering DeFi analytics, AI/LLM inference, prediction markets, blockchain infrastructure, security scanning, person/company intelligence, payments, and document parsing.\n\nThe catalog grows automatically. New endpoints are crawled from facilitator discovery feeds every 2 hours, auto-named by AI, and quality-verified with paid test calls every 24 hours. Run `./scripts/x402.sh categories` to see the current breakdown.\n\n## Get Your API Listed\n\nAny x402-enabled endpoint can appear in the Dexter bazaar. Here's how:\n\n1. **Make your API x402-compliant** — return HTTP 402 with an `accepts` array containing your pricing, asset (USDC), network, and `payTo` wallet. Use `@dexterai/x402` server middleware or any x402-compatible stack.\n\n2. **Facilitate through a known facilitator** — endpoints that settle through [x402.dexter.cash](https://x402.dexter.cash), [Coinbase CDP](https://api.cdp.coinbase.com), [PayAI](https://facilitator.payai.network), or [Ultraviolet](https://facilitator.ultravioletadao.xyz) are automatically crawled every 2 hours.\n\n3. **Wait for ingestion** — once crawled, Dexter's AI auto-namer generates a display name, description, and category for your endpoint. The quality verifier then pays for a real call, generates realistic test inputs using AI, scores the response quality (0–100), and writes detailed notes.\n\n4. **Pass quality verification** — endpoints scoring 75+ are auto-approved for the marketplace. Below 50 gets flagged for review. The verifier re-tests every 24 hours so quality stays current.\n\n5. **Optional: register directly** — submit your endpoint URL via `POST /api/x402/resources/register` on `api.dexter.cash` to skip waiting for the next crawl cycle.\n\n## Facilitator\n\nSettlement runs through [x402.dexter.cash](https://x402.dexter.cash):\n\n- **Gas-sponsored** — you pay $0 in SOL/ETH\n- **Smart wallet support** — PDA wallets (Crossmint, Squads) via simulation-based CPI verification\n- **Multi-network** — Solana, Base, Polygon, Arbitrum, Optimism, SKALE\n- **x402 v1 + v2** — backward-compatible with both protocol versions\n\n## lobster.cash Compatibility\n\nBuilt to the [lobster.cash skill compatibility guide](https://lobster.cash/docs/skill-compatibility-guide):\n\n- Wallet precheck before every payment\n- Payment intent description — not execution\n- Full error handling (insufficient balance, wallet not configured, payment failure)\n- Zero key handling — all wallet operations delegated to lobster.cash\n\n## Repo Structure\n\n```\nskills/SKILL.md ← what the agent reads\nopenclaw.plugin.json ← plugin manifest\n_meta.json ← registry metadata\nscripts/x402.sh ← CLI for search & pricing\nreferences/\n api-endpoints.md ← bazaar API docs\n categories.md ← category breakdown\n```\n\n## Links\n\n| | |\n|---|---|\n| **Marketplace** | [dexter.cash/marketplace](https://dexter.cash/marketplace) |\n| **Facilitator** | [x402.dexter.cash](https://x402.dexter.cash) |\n| **Agent Wallet** | [lobster.cash](https://lobster.cash) |\n| **x402 SDK** | [@dexterai/x402](https://www.npmjs.com/package/@dexterai/x402) |\n| **Register an API** | `POST api.dexter.cash/api/x402/resources/register` |\n| **Compatibility Guide** | [lobster.cash/docs/skill-compatibility-guide](https://lobster.cash/docs/skill-compatibility-guide) |\n","readmeFilename":"README.md"}