# String Decode Utility (Base64, Base64URL, Hex)

> String Decode Utility (Base64, Base64URL, Hex) is a paid API for AI agents from pyfile-agent.taile3ff35.ts.net, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Decodes an encoded string from base64, base64url, or hex encoding back to its original form

## Facts

- Endpoint: GET https://pyfile-agent.taile3ff35.ts.net/data/decode
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/string-decode-utility-base64-base64url-hex-42c32c5b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ne7CQXomLPUw-WFhHu86e

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 string-decode-utility-base64-base64url-hex-42c32c5b
```

Example prompt: Can you decode this base64 string for me: aGVsbG8gd29ybGQ=?

## When to prefer this

Use this endpoint when you need a quick, stateless server-side decode of a base64, base64url, or hex string without running local code — especially useful in agent pipelines where the runtime may not have native decode libraries accessible, or when you want a neutral third-party to confirm a decode result.

## Known failure modes

- Invalid base64 characters in input — returns error or malformed output
- Mismatched encoding format (e.g. specifying base64 but supplying hex) — may return garbage or an error
- Missing required 'input' query parameter — returns 400 or descriptive error
- Unsupported 'from' encoding type — returns error
- Padding issues in base64 strings — may cause decode failure

## How this service works

Decode a string. ?from=base64|base64url|hex&input=aGVsbG8=

## Output

Returns the decoded string corresponding to the input encoded value, given the specified encoding format (base64, base64url, or hex). The response is the plain decoded text or binary-as-text output.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "from": {
       "type": "string"
      },
      "input": {
       "type": "string"
      }
     }
    }
   }
  },
  "output": {
   "type": "object"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/string-decode-utility-base64-base64url-hex-42c32c5b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pyfile-agent.taile3ff35.ts.net](https://www.zero.xyz/host/pyfile-agent.taile3ff35.ts.net/llms.txt)