{
  "markdown": "<p align=\"center\">\n  <img src=\"https://ausca.com/favicon.svg\" alt=\"Ausca\" width=\"72\" height=\"72\" />\n</p>\n\n<h1 align=\"center\">Ausca</h1>\n\n<p align=\"center\">\n  Pay-per-call APIs and MCP services for AI agents: document OCR, document\n  analysis, media transcription, remote browser sessions, and agent email\n  inboxes. No account, no API keys; USDC on Base per call, a signed receipt\n  for every completed invocation.\n</p>\n\n<p align=\"center\">\n  <a href=\"https://www.npmjs.com/package/ausca\"><img src=\"https://img.shields.io/npm/v/ausca?label=npm%20ausca\" alt=\"npm ausca\" /></a>\n  <a href=\"https://www.npmjs.com/package/@ausca/sdk\"><img src=\"https://img.shields.io/npm/v/%40ausca%2Fsdk?label=%40ausca%2Fsdk\" alt=\"npm @ausca/sdk\" /></a>\n  <a href=\"https://pypi.org/project/ausca/\"><img src=\"https://img.shields.io/pypi/v/ausca?label=PyPI%20ausca\" alt=\"PyPI ausca\" /></a>\n  <a href=\"LICENSE\"><img src=\"https://img.shields.io/badge/license-MIT-black\" alt=\"MIT license\" /></a>\n  <a href=\"https://registry.modelcontextprotocol.io/v0/servers?search=com.ausca\"><img src=\"https://img.shields.io/badge/MCP%20registry-com.ausca%2Fagent--services-black\" alt=\"MCP registry\" /></a>\n  <a href=\"https://smithery.ai/servers/ausca/ausca\"><img src=\"https://smithery.ai/badge/ausca/ausca\" alt=\"Smithery\" /></a>\n</p>\n\nAgents buy infrastructure the way they call tools: send the request, pay the\n402 challenge within a hard USD cap you set, read the result and its\nsettlement proof. The catalog, prices, and schemas are immutable and public\nat [ausca.com/catalog.json](https://ausca.com/catalog.json); the full agent\ncontract is [ausca.com/SKILL.md](https://ausca.com/SKILL.md).\n\n## Services and prices\n\n| Service | What it does | Price (USD) |\n| --- | --- | --- |\n| Document OCR | Normalized text with line confidence from one committed document | $0.25 per document |\n| Document Analysis | Normalized forms, tables, signatures, or layout from one committed document | $0.30 to $0.75, sized by document bytes |\n| Media Transcription | Normalized transcript of one committed audio or video file | $0.40 to $1.30, sized by media bytes |\n| Browser Session | Remote browser with standard CDP access | $0.05 / 10 min, $0.10 / 30 min, $0.20 / 60 min |\n| Agent Inbox | A renewable receive-only email address your agent owns | $0.05 / hour, $0.20 / day, $1.00 / week |\n| Inbox Extension | Add time to an active inbox without changing its address | $0.05 / hour, $0.20 / day, $1.00 / week |\n\nPrices are the public catalog values at the time of writing; the live\ncatalog is authoritative.\n\n## Use it in 60 seconds\n\n**MCP** (Claude Desktop, Cursor, any MCP host): the local server holds your\nwallet and pays within your cap. Tools are derived from the live catalog.\n\n```json\n{\n  \"mcpServers\": {\n    \"ausca\": {\n      \"command\": \"npx\",\n      \"args\": [\"-y\", \"ausca\", \"mcp\"],\n      \"env\": {\n        \"AUSCA_PRIVATE_KEY\": \"0x...\",\n        \"AUSCA_MAX_PAYMENT_USD\": \"0.50\"\n      }\n    }\n  }\n}\n```\n\n**TypeScript**\n\n```ts\nimport { AuscaClient } from \"ausca\";\n\nconst client = AuscaClient.withLocalKey({\n  privateKey: process.env.AUSCA_PRIVATE_KEY, // pays USDC on Base\n  maxPaymentUsd: 0.5,                        // hard per-call cap\n});\n\nconst outcome = await client.invoke(\"browser.session\", { duration_seconds: 600 });\nconsole.log(outcome.result, outcome.payment?.transaction);\n```\n\n**CLI**\n\n```bash\nnpx ausca catalog\nnpx ausca price document.ocr\nAUSCA_PRIVATE_KEY=0x... AUSCA_MAX_PAYMENT_USD=0.50 \\\n  npx ausca invoke browser.session '{\"duration_seconds\":600}'\n```\n\n**Python**\n\n```bash\npip install ausca\n```\n\n```python\nfrom ausca import AuscaClient\n\nclient = AuscaClient.with_local_key(private_key=key, max_payment_usd=0.50)\noutcome = client.invoke(\"browser.session\", {\"duration_seconds\": 600})\n```\n\nA remote MCP server also runs at `https://ausca.com/mcp` (Streamable HTTP)\nfor discovery, preparation, and state reads; payment always signs on your\nside, which is why the local server exists.\n\n## How payment works\n\nEvery service is an [x402 v2](https://ausca.com/.well-known/x402) payable\nresource. An unsigned request returns the exact payment requirement; the\nclient pays it only if it fits your cap, then retries the same bytes with\nthe same idempotency key, so an uncertain retry can never buy twice.\nSettlement is USDC on Base and every completed invocation carries a receipt\nwith a public, hash-only verification page. Payment rails are pluggable\nbehind one interface; the official `@x402/*` libraries do all signing.\n\nDocument and media services take an immutable artifact commitment instead\nof raw bytes: `npx ausca commit file.pdf` uploads through the keyless\ningress and returns the commitment the offer input carries.\n\n## What is in this repository\n\n| Package | Registry | What it is |\n| --- | --- | --- |\n| [`ausca`](packages/ausca) | [npm](https://www.npmjs.com/package/ausca) | The front door: library, CLI, and local MCP server |\n| [`@ausca/sdk`](packages/sdk) | [npm](https://www.npmjs.com/package/@ausca/sdk) | The typed engine: client, payment authorities, artifact store |\n| [`ausca`](python/ausca) | [PyPI](https://pypi.org/project/ausca/) | Python client and CLI with the same ports |\n| [`@ausca/ai-sdk`](packages/ai-sdk) | [npm](https://www.npmjs.com/package/@ausca/ai-sdk) | Vercel AI SDK tools for any x402 v2 resource |\n| [`langchain-ausca`](packages/langchain-ausca) | [npm](https://www.npmjs.com/package/langchain-ausca) | LangChain tools for any x402 v2 resource |\n| [`skills/`](skills) | [ausca.com](https://ausca.com/skills/document-ocr/SKILL.md) | Agent skills, mirrored from the live origin |\n\nThe service runtime is not in this repository; this is the complete public\nbuyer side. `server.json` carries the official MCP registry identity\n`com.ausca/agent-services`.\n\n## Links\n\n- Agent contract: <https://ausca.com/SKILL.md>\n- Live catalog: <https://ausca.com/catalog.json>\n- OpenAPI: <https://ausca.com/openapi.json>\n- x402 discovery: <https://ausca.com/.well-known/x402>\n- Docs: <https://ausca.com/docs>\n\n## License\n\nMIT\n",
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