Delx Commerce — Hex Canonicalize

x402

Delx Commerce — Hex Canonicalize is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-01).

Validates and canonicalizes a hex string, returning its normalized form with optional 0x prefix, byte length, and validity status.

Price / call$0.003

Seller volume →—

Success—

StatusUnknown

How this service works

Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.

Output

Returns a JSON object indicating whether the hex string is valid (boolean), the canonical hex string in the requested prefix style, the byte length of the encoded data, the input string length, and a schema version identifier (e.g. delx/util-hex-canonicalize/v1).

Example use cases

Validate hex before blockchain call

“I have this hex string 'deadbeef' — can you check if it's valid and return the canonical version with a 0x prefix before I use it in a transaction?”

Standardize hex encoding in data pipeline

“Normalize this hex value 'ABCDEF0123' to its canonical form without a 0x prefix so I can store it consistently in my database.”

Detect malformed hex in user input

“A user submitted the hex string '0xGG12' — can you tell me if it's actually a valid hex value, and if so, what its canonical form and byte length are?”

Technical details

Endpoint

POSThttps://commerce.delx.ai/api/v1/x402/hex-canonicalize?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a quick, authoritative, pay-per-result check that a hex string is well-formed and to retrieve its normalized representation — especially in blockchain, cryptography, or data-pipeline contexts where hex validity is a hard prerequisite. Prefer this over writing your own regex when you need a verifiable, auditable result with a defined schema version.

Side effects

Odd-length hex (after stripping 0x) results in valid=false with no canonical form
Non-hex characters cause valid=false response
Empty input may return an error or valid=false
Malformed JSON body returns a 4xx error
Payment not included or insufficient USDC triggers 402 Payment Required

Input

Schema · Request body

Field	Type	Description
hex	string	Hex string with or without 0x; must be even-length for valid=true.
prefer_0x	boolean	When true, canonicalize with a 0x prefix.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "valid": true,
    "schema": "delx/util-hex-canonicalize/v1",
    "canonical": "0xabcd",
    "byte_length": 2,
    "input_length": 6
  }
}

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