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Delx Bytes Hex Encode
x402
Delx Bytes Hex Encode is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Encodes bounded UTF-8 text to its hexadecimal representation, or inspects the resulting hex byte length, entirely locally without any RPC calls.
Price / call$0.003
Success—
StatusUnknown
How this service works
Encode bounded UTF-8 text to hex or inspect hex byte length without RPC — call when encoding bounded UTF-8 to hex or inspecting hex length. Use for chain input hygiene without live RPC—adjacent to OneSource-class small chain reads, but static/local only so rights and margin stay clear. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of live chain…
Output
Returns a deterministic JSON object containing the hex-encoded representation of the input UTF-8 text and/or the byte length of the resulting hex string. No external calls are made; output is computed locally and statelessly.
Example use cases
Blockchain input hygiene for contract call
“I need to hex-encode the string 'transfer:0xABC123' before passing it as calldata to a smart contract — can you convert it to hex for me?”
Inspect hex byte length before on-chain submission
“Before I submit this text 'auction_bid_round_42' to the chain, can you tell me how many bytes its hex encoding will be?”
Deterministic hex encoding for off-chain logging
“Convert the UTF-8 string 'user_session_data_2024' to its hex representation so I can store it in a deterministic, machine-readable log.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/bytes-hex-encodeWhen to prefer
Choose this endpoint when you need a fast, stateless, deterministic hex encoding of a UTF-8 string with no external RPC dependencies, no data retention, and no side effects — ideal for preparing on-chain inputs, validating byte lengths before submission, or any workflow where local-only execution and privacy are required. Prefer this over RPC-based encoding utilities when live chain access is unnecessary and cost predictability matters.
Side effects
- Input text exceeds bounded length limit — API returns an error indicating text is too long
- Non-UTF-8 or malformed byte sequences in input — API returns a validation or encoding error
- Empty string input — may return empty hex string or an error depending on validation rules
- Missing required 'text' field — API returns a 400-style error about missing input
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | UTF-8 text to encode, chunk, index, or analyze (caller-supplied only). |
Output
Schema · Response
{
"type": "json",
"example": {
"hex": "0x64656c78",
"mode": "text_to_hex",
"valid": true,
"schema": "delx/util-bytes-hex-encode/v1",
"truncated": false,
"byte_length": 4
}
}Tags
x402
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