# 47620 Utilities API – SHA-256 Fingerprint

> 47620 Utilities API – SHA-256 Fingerprint is a paid API for AI agents from 47620.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).

Computes a SHA-256 fingerprint of any input string, returning the full hex digest, colon-separated SSH-style fingerprint, a 16-char short ID, and base64 encoding.

## Facts

- Endpoint: GET https://47620.xyz/x/util/fingerprint?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/47620-utilities-api-sha-256-fingerprint-90166f3e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dP2uGbnlr2Yq_DrQ3UoKS

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 47620-utilities-api-sha-256-fingerprint-90166f3e
```

Example prompt: Can you compute the SHA-256 fingerprint of the string 'hello world' and give me the full hex digest, the colon-separated SSH-style version, the 16-char short ID, and the base64 encoding?

## When to prefer this

Choose this endpoint when you need SHA-256 fingerprints in multiple output formats simultaneously (hex, colon-separated, short ID, base64) from a single API call, without needing to implement hashing locally. Particularly useful in agentic workflows where you need deterministic, reproducible content identifiers, deduplication keys, or SSH-style fingerprints without deploying compute infrastructure.

## Known failure modes

- Missing or empty `text` query parameter — may return an error or hash of empty string
- Input string too large — may trigger payload size limits
- Network timeout on slow connections despite fast CPU computation
- Payment failure via x402 protocol preventing endpoint access

## How this service works

Compute a SHA-256 fingerprint of any string: full hex digest, colon-separated (like SSH fingerprints), a short 16-char id, and base64. Deterministic, CPU-only. Pass ?text=<content>.

## Output

Returns a JSON object containing the SHA-256 hash of the input string in four formats: full lowercase hex digest, colon-separated pairs (SSH fingerprint style), a 16-character short identifier, and standard base64 encoding. The computation is deterministic and CPU-only with no external dependencies.

## 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": {
      "fields": {
       "type": "string",
       "description": "Optional comma-separated top-level response keys to keep (e.g. \"health,slot,solUsd\"). Omit for the full payload."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "ok",
      "endpoint"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "endpoint": {
       "type": "string"
      }
     },
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/47620-utilities-api-sha-256-fingerprint-90166f3e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 47620.xyz](https://www.zero.xyz/host/47620.xyz/llms.txt)