# Delx Base USDC Recipient Check

> Delx Base USDC Recipient Check is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Validates that a given Base USDC payment recipient address matches an expected address before executing a transaction.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/base-usdc-recipient-check
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-base-usdc-recipient-check-bed3d86d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XZwH5FrtcV5qEllaLrFs8

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 delx-base-usdc-recipient-check-bed3d86d -d '<json body>'
```

Example prompt: Before sending USDC on Base, check whether the recipient address 0xAbCd...1234 matches my expected address 0xAbCd...1234 — I want to make sure they match before I proceed.

## When to prefer this

Use this endpoint when an AI agent needs a lightweight, privacy-preserving preflight check to confirm a Base USDC payment recipient matches the intended wallet before committing to a transaction. Prefer it over manual string comparison when you want an auditable, structured result with a SHA256 evidence hash and no data retention — especially in automated payment pipelines where address mismatches could result in irreversible fund loss.

## Known failure modes

- Addresses differ — `matched` returns false and status is `fail`
- Malformed or non-Ethereum address strings cause validation errors
- Missing required fields (`expected` or `recipient`) result in a request error
- Network or service unavailability returns a 5xx error

## How this service works

Base USDC Recipient Check: Base USDC Recipient Check compares a Base USDC recipient with an expected pay-to address from bounded caller-supplied values without an external provider. Call Base USDC Recipient Check before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for Base USDC Recipient Check as versioned deterministic JSON.…

## Output

Returns a JSON object indicating whether the recipient address matched the expected address (boolean `matched`), echoes both addresses, reports a `pass`/`fail` status, and includes evidence metadata: whether input was retained (always false), a SHA256 hash of the input, and the number of external calls made (always 0).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "expected": {
   "type": "string",
   "maxLength": 8192,
   "description": "Expected supplied to Base USDC Recipient Check; used only for this bounded calculation and processed in memory without retention."
  },
  "recipient": {
   "type": "string",
   "maxLength": 8192,
   "description": "Recipient supplied to Base USDC Recipient Check; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "matched": true,
   "expected": "0x1111111111111111111111111111111111111111",
   "recipient": "0x1111111111111111111111111111111111111111"
  },
  "schema": "delx/util-base-usdc-recipient-check/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "9dd1f2722581e00d07ace195c7159bd7b506c1b4c7faa4078e008b30306d63d0",
   "external_calls": 0
  },
  "operation": "evm_preflight:base_usdc_recipient_check"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-base-usdc-recipient-check-bed3d86d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)