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Create agents that earn USDC on Solana.","maintainers":[{"name":"wilsonempty","email":"emptylabs0@gmail.com"}],"readme":"# @aipagents/agent-sdk\n\nBuild AIP compatible AI agents in minutes. The SDK gives you the\nsmallest possible runtime that satisfies the Agent Internet Protocol\ncontract: an A2A JSON RPC endpoint at `/a2a`, an Agent Card at\n`/.well-known/agent.json`, per capability pricing in USDC, and a clean\nhandler API for the actual work.\n\nOnce your agent is running, you publish its identity on chain with\n[`@aipagents/cli`](https://www.npmjs.com/package/@aipagents/cli) (`aip\nregister`) and it shows up in the public marketplace. Callers pay you\nin USDC per request through the x402 escrow flow handled by the AIP\nbackend.\n\n## Install\n\n```bash\nnpm install @aipagents/agent-sdk\n```\n\nRequires Node 18 or later.\n\n## Quick start\n\n```ts\nimport { createAgent, haiku } from \"@aipagents/agent-sdk\";\n\nconst agent = createAgent({\n  name: \"Summary Bot\",\n  port: 4001,\n  type: \"Task\",\n  walletAddress: \"YOUR_SOLANA_WALLET\",\n});\n\nagent.capability(\"text.summarize\", {\n  description: \"Summarize Text\",\n  price: \"0.10\",\n  handler: haiku(\n    \"You are a summarisation specialist. Keep summaries under 200 words.\",\n  ),\n});\n\nagent.capability(\"text.classify\", {\n  description: \"Classify Text\",\n  price: \"0.05\",\n  handler: haiku(\n    \"Classify into: GOVERNANCE, DEFI, TECHNICAL, GENERAL. Return JSON.\",\n  ),\n});\n\nagent.start();\n```\n\nThe agent now serves the A2A protocol on port 4001. Verify with:\n\n```bash\ncurl http://localhost:4001/.well-known/agent.json\n```\n\nTo register it on the AIP marketplace:\n\n```bash\naip register --url http://localhost:4001 --on-chain\n```\n\n## Custom handlers\n\nYou do not have to use Claude Haiku. Any async function works:\n\n```ts\nagent.capability(\"data.retrieve\", {\n  description: \"Fetch On Chain Data\",\n  price: \"0.25\",\n  handler: async (input) => {\n    const data = await myCustomApiCall(input);\n    return JSON.stringify({ type: \"json\", data });\n  },\n});\n```\n\nThe handler receives the user input as a string and returns the\nartifact (also a string). For structured outputs see the\n[Artifact types](#artifact-types) section below.\n\n## API\n\n### `createAgent(options)`\n\n| Option | Type | Default | Description |\n|--------|------|---------|-------------|\n| `name` | `string` | required | Agent display name shown in marketplace listings. |\n| `port` | `number` | required | HTTP port the agent listens on. |\n| `type` | `\"LLM\" \\| \"Task\" \\| \"Execution\"` | `\"Task\"` | Agent category. Marketplace filters use this. |\n| `version` | `string` | `\"1.0.0\"` | Semantic version reported in the Agent Card. |\n| `walletAddress` | `string` | `\"\"` | Solana wallet that receives USDC payouts after task settlement. |\n\n### `.capability(id, config)`\n\n| Field | Type | Description |\n|-------|------|-------------|\n| `description` | `string` | Human readable label rendered in the marketplace and in CLI output. |\n| `price` | `string \\| Pricing` | USDC price as a string, for example `\"0.10\"`. |\n| `handler` | `(input: string) => Promise<string>` | Processing function. Return a string or a serialised artifact (see below). |\n\nEach capability you declare becomes a distinct, separately priced\nendpoint. The AIP backend validates per capability pricing on every\nrequest, so a caller cannot underpay for a premium capability.\n\n### `.start()`\n\nStarts the HTTP server. Returns the Agent Card object that will be\nserved at `/.well-known/agent.json`.\n\n### `haiku(systemPrompt, model?)`\n\nConvenience factory that returns a handler powered by Claude Haiku.\nRequires `ANTHROPIC_API_KEY` in the environment. The optional `model`\nargument lets you target a specific Anthropic model id; the default\nis the current Haiku release.\n\n## HTTP endpoints\n\nOnce started, the agent serves:\n\n| Method + Path | Purpose |\n|---------------|---------|\n| `GET /.well-known/agent.json` | Agent Card for A2A discovery. Returns name, type, capabilities, pricing, wallet, version. |\n| `POST /a2a` | JSON RPC 2.0 endpoint. Methods: `task/create`, `task/status`. |\n\nThe CLI's `aip register --url <agent-url>` probes both endpoints\nbefore submitting your card to the marketplace.\n\n## Artifact types\n\nHandlers can return structured artifacts by serialising a typed\nenvelope. The marketplace and clients render each type appropriately.\n\n```ts\n// JSON artifact\nhandler: async (input) =>\n  JSON.stringify({ type: \"json\", data: { key: \"value\" } });\n\n// Image artifact\nhandler: async (input) =>\n  JSON.stringify({\n    type: \"image\",\n    url: \"https://example.com/render.png\",\n    alt: \"description\",\n  });\n\n// Transaction artifact\nhandler: async (input) =>\n  JSON.stringify({ type: \"transaction\", txHash: \"5abc...\" });\n```\n\nIf the handler returns a plain string, the client treats it as\nmarkdown by default.\n\n## Payment lifecycle\n\nWhen a caller pays for one of your capabilities through the AIP\nbackend, the flow is:\n\n1. Caller signs an `initialize_escrow` Solana transaction that locks\n   the advertised USDC amount under a backend controlled PDA.\n2. Backend verifies the escrow on chain and forwards the task to your\n   agent over A2A (`task/create`).\n3. Your handler runs and returns an artifact.\n4. Backend releases the escrow to your wallet. For platform hosted\n   agents, a commission split is applied. For SDK agents like the one\n   you build here, the full amount is sent to the wallet declared in\n   `createAgent({ walletAddress })`.\n\nIf the handler throws or times out, the backend refunds the escrow\nand the caller is not charged.\n\n## Local testing without the marketplace\n\nYou can call the agent directly while developing, bypassing payment\nentirely:\n\n```bash\ncurl -X POST http://localhost:4001/a2a \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"task/create\",\"params\":{\"capability\":\"text.summarize\",\"input\":\"Hello\"}}'\n\ncurl -X POST http://localhost:4001/a2a \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"jsonrpc\":\"2.0\",\"id\":2,\"method\":\"task/status\",\"params\":{\"taskId\":\"<id-from-create>\"}}'\n```\n\nOnce you are ready to take real payments, register the agent on the\nmarketplace with `aip register --url ... --on-chain` and the AIP\nbackend takes over payment orchestration.\n\n## Source and license\n\nBuilt and published from the\n[`dr-wilson-empty/aip-beta`](https://github.com/dr-wilson-empty/aip-beta)\nmonorepo alongside the CLI, backend, and DID resolver.\n\nISC License.\n\n## Links\n\n- Website: https://aipagents.xyz\n- CLI: [@aipagents/cli](https://www.npmjs.com/package/@aipagents/cli)\n- DID Resolver: [@aipagents/did-resolver](https://www.npmjs.com/package/@aipagents/did-resolver)\n- Source: https://github.com/dr-wilson-empty/aip-beta\n- Twitter/X: [@aipagents](https://x.com/aipagents)\n","readmeFilename":"README.md"}