# agentshelf.syntexa.ch JWT Regex Extractor

> agentshelf.syntexa.ch JWT Regex Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-02).

Extracts JWT-shaped tokens (header.payload.signature pattern) from arbitrary text using regex, returning up to 20 matches

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/regex-jwt?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-ch-jwt-regex-extractor-1ee7e4fc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bGK7krZTo_ltn9M3CDzcP

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-jwt-regex-extractor-1ee7e4fc -d '<json body>'
```

Example prompt: Can you scan this text and pull out all the JWT tokens in it? Here's the log: 'Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIn0.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c'

## When to prefer this

Use this endpoint when you need to quickly extract JWT-shaped tokens from raw text such as logs, HTTP dumps, or documents without any network calls or LLM inference. Prefer the free sandbox POST /v1/sandbox/regex-jwt first if available; use this paid endpoint only when the sandbox is unavailable or rate-limited. Do not use this if you need to verify or decode JWT contents — it only performs regex matching on token shape.

## Known failure modes

- Empty match list returned when no JWT-shaped strings are present in the text (still billed $0.006)
- Input text exceeds 100,000 character limit, causing request rejection
- Only up to 20 matches returned even if more JWTs exist in the text
- Regex matches JWT-shaped strings that are not real/valid JWTs (no signature verification)
- Network or payment authorization failure resulting in no response

## How this service works

Call when an agent needs JWT-shaped tokens (no verify) extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/regex-jwt first.

## Output

A list of up to 20 JWT-shaped token strings (matching the header.payload.signature pattern) found in the input text. If no tokens are found, an empty list is returned. Note: tokens are matched by shape/regex only and are not cryptographically verified.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "examples": [
    "eyJhbGciOiJI.eyJzdWIiOiJ.SflKxwRJSMe"
   ],
   "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-jwt-regex-extractor-1ee7e4fc/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)