Senior Node.js/Python Developer: Build B2A Micro-SaaS API with x402 Micropayments & MCP Manifest
Budget: $1000.0
FIXED /
⭐ 0.00 (0)
United States
restful-api, node.js
Bevorzugte Qualifikationen
- Standort: Americas, Asia, Europe
- Erfahrung: Experte
- Englisch: Fließend
I am seeking an experienced backend engineer to build and deploy a modular Business-to-Agent (B2A) Micro-SaaS API. The API serves structured, real-time local inventory and public data from the Research Triangle, NC area directly to autonomous AI agents via crypto micropayments on the Base network.
Key Technical Requirements:
Core Data Scrapers / Connectors: Build resilient, automated scrapers/connectors (Playwright, Puppeteer, or BeautifulSoup) for 15 targets. Targets will be shared upon hiring.
Modular Architecture: Design a plug-and-play connector architecture so additional regional target scrapers can be added via simple configuration plugins without refactoring core server logic.
x402 Protocol Integration: Implement the open-source x402 (HTTP 402 Payment Required) middleware (@x402/express or @x402/hono) on all endpoints:
Requests without payment proof must return an HTTP 402 status code with payment instructions.
Requests verified with a $0.003 USDC transaction on the Base network instantly unlock clean JSON responses.
Environment variables must route micropayments directly to my provided receiving wallet address.
Agent Discovery Specs: Generate valid openapi.json and Model Context Protocol (MCP) server manifest (mcp.json) files hosted at /.well-known/ for automatic discovery by AI frameworks (Claude, AutoGPT, LangChain).
Deployment & Handover: Host the production server on Render with environment variables configured, and provide a test client script to verify on-chain payments.
Required Qualifications:
Strong proficiency in Node.js (Express/Hono) or Python (FastAPI).
Web scraping expertise (Playwright, Puppeteer, proxy handling).
Experience with EVM wallet interactions and HTTP 402 payment protocols.
Familiarity with OpenAPI 3.0 and Anthropic Model Context Protocol (MCP) standards.
About Me:
I do not know like anything about any of this technical stuff, I have been using Gemini to help me write this post. I know what the big picture goal is and I am just looking for somebody who can help set this up for me. I am in the process of setting up Render and Github where I should be able to invite you as a collaborator. I will also have the domain registered before we get started. But then again, I don't even know what I would be doing on GitHub or Render.
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