# Base USDC Receipt Audit Kit (Read-Only Python CLI)

> Base USDC Receipt Audit Kit (Read-Only Python CLI) is a paid API for AI agents from speedbot.dev, paid per call via x402, $2/call, status unknown (last checked 2026-10-29).

Purchases and delivers a read-only Python CLI tool for auditing Base USDC transactions, verifying canonical contract addresses, recipients, and atomic amounts before marking invoices or bounties as paid.

## Facts

- Endpoint: POST https://speedbot.dev/api/products/product_55f00c20c6d84a3f9509c7cd3ca115c9/versions/version_302570837e614fcabf831436d3f970e2/buy?utm_source=zero.xyz
- Price: $2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-usdc-receipt-audit-kit-read-only-python-cli-86fdd1a0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tFfnrOXNZR9qGr1m4a0Bp

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability base-usdc-receipt-audit-kit-read-only-python-cli-86fdd1a0 -d '<json body>'
```

Example prompt: I need to buy the Base USDC Receipt Audit Kit so I can check exact transaction details and recipient addresses before marking a bounty as paid — use my email dev@example.com, generate a checkout key and request ID for me, and confirm I consent to immediate digital delivery.

## When to prefer this

Choose this endpoint when you need an offline, dependency-free Python tool to audit Base USDC transactions before approving bounty payouts or invoice settlements, especially when you want to verify canonical contract addresses and exact atomic amounts without relying on a live API or third-party service.

## Known failure modes

- Missing or invalid email format — purchase rejected
- checkout_key not 64 hex characters — validation error
- request_id shorter than 16 characters — rejected
- digital_delivery_consent not set to true — purchase blocked
- Payment of 2 USDC not received — delivery withheld
- Duplicate request_id on retry without matching checkout_key — may cause inconsistent state

## How this service works

Base USDC Receipt Audit Kit read-only Python CLI. Before marking a Base USDC bounty or invoice paid, check the exact transaction, canonical USDC contract, recipient, atomic amount, optional  First approved purchase: 0.01 USDC total where maker terms permit; later 2 USDC plus tax. Stored ZIP download; commercial use, no redistribution. Verified by Speedbot for this version. Generate a private checkout_key and request_id; email and delivery consent required.

## Output

A ZIP file download containing a dependency-free, read-only Python CLI tool for auditing Base USDC transactions. The tool enables verification of the canonical USDC contract address, recipient wallet, and exact atomic USDC amount on Base chain. A receipt is delivered to the provided email address.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "email": {
   "type": "string",
   "pattern": "^[^\\s@]+@[^\\s@]+\\.[^\\s@]+$",
   "description": "Your receipt/recovery email; required when paying, never copied to the facilitator."
  },
  "request_id": {
   "type": "string",
   "maxLength": 100,
   "minLength": 16,
   "description": "Generate a unique purchase identifier and retain on every retry."
  },
  "checkout_key": {
   "type": "string",
   "pattern": "^[a-fA-F0-9]{64}$",
   "writeOnly": true,
   "description": "Generate 32 private random bytes as 64 hex characters. Required when paying. Retain on every retry."
  },
  "digital_delivery_consent": {
   "type": "boolean",
   "const": true,
   "description": "Required for a purchase: request immediate digital delivery and acknowledge the applicable withdrawal consequence."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-usdc-receipt-audit-kit-read-only-python-cli-86fdd1a0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from speedbot.dev](https://www.zero.xyz/host/speedbot.dev/llms.txt)