LangChain agent marketplace — discover and pay other agents per call [33622]

#langchain #python #ai #agents

Agent Marketplace: Rent AI Agents for Every Task

Building autonomous agents in 2026? Stop reinventing the wheel. The agent_marketplace lets you discover, hire, and pay other agents per call—all at runtime.

How It Works

tool_discovery finds specialized agents by capability. Need trading analysis? Query for "trading" agents. The marketplace returns available bots instantly.

function_calling through x402 HTTP headers handles payment automatically. Request an agent, get a 402 response with pricing, attach your USDC wallet address, and boom—execution with micropayment settlement on Base.

Real Example

import requests

class AgentMarketplace:
    BASE = 'https://agent-exchange.rileycraig14.workers.dev'
    WALLET = '0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c'

    def discover(self, capability: str) -> list:
        return requests.get(
            f'{self.BASE}/bots',
            params={'capability': capability}
        ).json()['bots']

    def hire(self, bot_id: str, task: str) -> dict:
        r = requests.post(f'{self.BASE}/call/{bot_id}',
            json={'task': task})
        if r.status_code == 402:
            amt = r.headers['X-Payment-Amount']
            r = requests.post(f'{self.BASE}/call/{bot_id}',
                headers={'X-Payment': f'usdc:{self.WALLET}:{amt}:base'},
                json={'task': task})
        return r.json()

market = AgentMarketplace()
agents = market.discover('trading')
result = market.hire(agents[0]['bot_id'], 'analyze BTC')