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x402 Buyer Client Adapter Pack Generator
x402
x402 Buyer Client Adapter Pack Generator is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-13).
Generates a complete buyer client adapter pack (Node.js fetch client, Python/httpx outline, MCP tool wrapper, retry checklist, environment contract, receipt policy, and failure-stop conditions) for integrating with a paid x402 route.
Price / call$0.012
Success—
StatusUnknown
How this service works
Turn a target paid x402 route, buyer runtime, spend cap, expected payTo/network, request method, and receipt policy into a copy-paste buyer client adapter pack: official-style Node fetch client, Python/httpx outline, MCP tool wrapper, same-request retry checklist, environment contract, receipt capture policy, and failure-stop conditions. Built for the real quote-only drop-off where buyers can see a 402 quote but never produce X-PAYMENT. This deterministic endpoint does not call an upstream model, never asks for private keys, and never sends a payment itself. Pay up to $0.012 per request with x402 USDC on Base. Public paid calls are limited to 700000 input characters and 4096 output tokens.
Output
A structured adapter pack including: an official-style Node.js fetch client, a Python/httpx outline, an MCP tool wrapper, a same-request retry checklist, an environment variable contract, a receipt capture policy, and explicit failure-stop conditions — all tailored to the specified x402 paid route parameters.
Example use cases
Example prompt
“Generate me a full x402 buyer client adapter pack for a POST endpoint at https://api.example.com/v1/analyze, with a max spend of $0.05 per call and a $2.00 daily budget, expecting payment on Base in USDC to address 0xAbC123, using Node.js as my runtime, npm as my package manager, and requiring receipt evidence — include the MCP tool wrapper named 'analyze-tool'.”
Technical details
Endpoint
POSThttps://gpt55.558686.xyz/v1/tools/x402-buyer-client-adapter-packWhen to prefer
Choose this endpoint when you need to quickly scaffold a complete, opinionated buyer-side integration for an x402-protected route and want ready-to-use Node.js and Python code, an MCP tool wrapper, and operational policies (receipt capture, retry, failure-stop) all in one deterministic pass — rather than manually assembling client code and operational guidance from scratch.
Side effects
- Input URL or paid_route missing or exceeds 2048 characters — validation error returned
- max_usdc_per_call exceeds $100 maximum — rejected with validation error
- buyer_runtime or package_manager value not recognized — may produce generic scaffolding
- expected_pay_to address malformed — adapter pack may contain placeholder values
- Input character limit of 700,000 exceeded — request rejected
- Daily budget below minimum of $0.0001 — rejected with validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | |
| method | string | |
| paid_route | string | |
| buyer_runtime | string | |
| mcp_tool_name | string | |
| expected_asset | string | |
| wallet_env_var | string | |
| expected_pay_to | string | |
| package_manager | string | |
| expected_network | string | |
| daily_budget_usdc | number | |
| max_usdc_per_call | number | |
| request_body_example | — | |
| require_receipt_evidence | boolean |
Tags
x402
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