# 24K Labs Hash Multi

> 24K Labs Hash Multi is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Computes MD5, SHA1, SHA256, SHA512, SHA3-256, and CRC32 digests of text or hex bytes in a single API call, returning hex strings and byte length for each algorithm.

## Facts

- Endpoint: POST https://api.24klabs.ai/api/hash-multi
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/24k-labs-hash-multi-7313e27a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JfBNkPeaJroK5pbsy6Spm

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 24k-labs-hash-multi-7313e27a -d '<json body>'
```

Example prompt: Compute the MD5, SHA256, and SHA512 digests of the string 'Hello, world!' all at once.

## When to prefer this

Choose this endpoint when you need multiple hash algorithms computed simultaneously in a single round-trip, avoiding the overhead of calling separate hashing services. Ideal for data integrity workflows, deduplication, or security verification where cross-algorithm comparison is needed. Prefer over single-algorithm endpoints when breadth of coverage (MD5 through SHA3-256 and CRC32) is required at once.

## Known failure modes

- Invalid or malformed hex input when hex encoding is specified — returns 400 error
- Empty input string — may return error or zero-length hashes depending on implementation
- Payload too large — may time out or be rejected if input exceeds size limits
- Network or upstream timeout returning 5xx error

## How this service works

Compute md5, sha1, sha256, sha512, sha3-256 and crc32 digests of text (or hex bytes) in a single call. Returns hex for each plus byte length.

## Output

A JSON object containing hex-encoded hash strings for all six algorithms (md5, sha1, sha256, sha512, sha3-256, crc32) plus the byte length of the input. All digests are returned in a single response.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sha256": "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/24k-labs-hash-multi-7313e27a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.24klabs.ai](https://www.zero.xyz/host/api.24klabs.ai/llms.txt)