How to Build an AI Agent That Accepts Gig Work and Gets Paid Automatically

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A technical walkthrough published on DEV Community outlines how developers can connect a large language model chain to gig platforms like Upwork or Fiverr to create billable AI agents. The architecture involves three components: a gig platform that posts jobs and handles payouts, a lightweight HTTP frontend that validates and routes requests, and an LLM orchestrator that runs the prompt chain and processes payments. The guide uses LangChain v0.2 with OpenAI's GPT-4-turbo, though it notes compatibility with other function-calling models such as Anthropic Claude, Mistral, and Llama-3. Payment is handled via the x402 micropayment protocol, enabling the agent to charge clients per call or per completed unit of work. The article also provides working Python code, including a sample tool that fetches and summarizes GitHub repository README files.

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