# agentshelf.syntexa.ch Card Redaction

> agentshelf.syntexa.ch Card Redaction is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-29).

Detects and redacts payment card numbers from arbitrary text, returning the sanitized text without storing any data.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/redact-card?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-ch-card-redaction-f2261ebe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w9jCshVZNPtvedNhZylGP

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 agentshelf-syntexa-ch-card-redaction-f2261ebe -d '<json body>'
```

Example prompt: Can you redact any credit or debit card numbers from this text before I log it: 'Customer called about charge on card 4111111111111111, said it was unauthorized.'

## When to prefer this

Use this endpoint when you need a fast, stateless, guaranteed-cost ($0.002 USDC) card-number redaction step with no data retention — ideal for pre-storage sanitization, PCI compliance pipelines, or scrubbing logs before sharing. Prefer the free sandbox endpoint (/v1/sandbox/redact-card) for testing. Choose this over an LLM-based approach when you need deterministic, regex/pattern-based redaction without risk of hallucination or data retention.

## Known failure modes

- Text exceeds 100,000 character limit — request rejected with validation error
- Empty or missing text field — request rejected
- Malformed JSON body — returns 400 error
- Payment of $0.002 USDC not provided or rejected — returns 402 Payment Required
- Card patterns not recognized if heavily obfuscated or non-standard formatting

## How this service works

Call when an agent needs card matches redacted in text. Nothing is stored. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/redact-card first.

## Output

Returns the input text with any detected payment card numbers replaced by a redacted placeholder, leaving all other content intact. No data is stored server-side.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "examples": [
    "Hello, World!"
   ],
   "maxLength": 100000,
   "minLength": 1,
   "description": "Input for this SKU. The route description says whether it is plain text, a URL, base64 bytes, or an already-encoded token."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentshelf-syntexa-ch-card-redaction-f2261ebe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)