Agent402 UK Hex Encode/Decode

x402

Agent402 UK Hex Encode/Decode is a paid API for AI agents from agent402.co.uk, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Encodes UTF-8 text to hexadecimal or decodes hex strings back to UTF-8 text

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.

Output

Returns a JSON object containing the resulting hex string (for encode) or decoded UTF-8 text (for decode), along with an echo of the action performed.

Example use cases

Encoding message for agent transport

“Can you hex encode the string 'payment_ref:TX_9921AB' so I can include it safely in an agent-to-agent message payload?”

Decoding an unknown hex value

“I received this hex string '48656c6c6f20576f726c64' and I need to know what it actually says — can you decode it back to plain text?”

Preparing binary-safe config value

“I need to hex encode the UTF-8 text 'user:admin|role:superuser' so I can embed it as a binary-safe value in a config header without corruption.”

Technical details

Endpoint

POSThttps://agent402.co.uk/v1/utils/hex

When to prefer

Choose this endpoint when you need a lightweight, stateless hex encode/decode utility without spinning up a local library — especially useful in agent pipelines where binary-safe text transport is needed and base64 is not available or not preferred. Ideal for converting strings to hex for embedding in URLs, headers, or structured payloads, or for decoding hex values received from external systems.

Side effects

Invalid action value (not 'encode' or 'decode') may return an error or unexpected result
Malformed hex input (odd-length or non-hex characters) during decode may cause parsing failure
Missing 'text' or 'action' fields in request body likely returns a 400-style error
Non-UTF-8 byte sequences in hex may fail to decode cleanly

Input

Schema · Request body

Field	Type	Description
text	string	Text or hex string
action	string	encode \| decode

Output

Schema · Response

{
  "type": "json",
  "example": {
    "hex": "68656c6c6f",
    "action": "encode"
  }
}

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How this service works

Output

Returns a JSON object containing the resulting hex string (for encode) or decoded UTF-8 text (for decode), along with an echo of the action performed.

Example use cases

Encoding message for agent transport

“Can you hex encode the string 'payment_ref:TX_9921AB' so I can include it safely in an agent-to-agent message payload?”

Decoding an unknown hex value

“I received this hex string '48656c6c6f20576f726c64' and I need to know what it actually says — can you decode it back to plain text?”

Preparing binary-safe config value

“I need to hex encode the UTF-8 text 'user:admin|role:superuser' so I can embed it as a binary-safe value in a config header without corruption.”

Technical details

Endpoint

POSThttps://agent402.co.uk/v1/utils/hex

When to prefer

Side effects

Invalid action value (not 'encode' or 'decode') may return an error or unexpected result
Malformed hex input (odd-length or non-hex characters) during decode may cause parsing failure
Missing 'text' or 'action' fields in request body likely returns a 400-style error
Non-UTF-8 byte sequences in hex may fail to decode cleanly

Input

Schema · Request body

Field	Type	Description
text	string	Text or hex string
action	string	encode \| decode

Output

Schema · Response

{
  "type": "json",
  "example": {
    "hex": "68656c6c6f",
    "action": "encode"
  }
}