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Agent402 UK — CAIP-19 Asset ID Validator
x402
Agent402 UK — CAIP-19 Asset ID Validator is a paid API for AI agents from agent402.co.uk, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Validates and parses a CAIP-19 asset identifier, returning the CAIP-2 chain reference, asset namespace, and validity flag
Price / call$0.001
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 with three fields: 'valid' (boolean indicating whether the CAIP-19 ID is well-formed and recognized), 'caip2' (the CAIP-2 chain reference extracted from the ID, e.g. 'eip155:8453'), and 'asset_namespace' (the asset type such as 'erc20'). Costs $0.001 USDC per call, paid via x402 on Base. No API key required.
Example use cases
Pre-payout asset ID verification
“Before I send out this USDC payout, validate the CAIP-19 ID 'eip155:8453/erc20:0x833589fcd6edb6e08f4c7c32d4f71b54bda02913' — I need to confirm it's a valid erc20 asset on Base.”
Agent DeFi pipeline asset check
“My agent is about to interact with a token — can you parse 'eip155:1/erc20:0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48' and confirm what chain and asset namespace it belongs to before we proceed?”
CAIP-19 format debugging
“I've got this asset identifier 'eip155:137/erc20:0x2791bca1f2de4661ed88a30c99a7a9449aa84174' and I'm not sure if it's correctly formatted — validate it and tell me if there are any issues.”
Technical details
Endpoint
POSThttps://agent402.co.uk/v1/chain/caip19When to prefer
Use this endpoint when an agent needs to deterministically validate or parse a CAIP-19 asset identifier before executing a blockchain operation, payout, or DeFi workflow — avoiding wasting LLM tokens on a lookup that is pure string parsing. Ideal for pre-flight checks in payment pipelines, asset routing logic, or any workflow that must confirm a token's chain and namespace cheaply and reliably. No API key needed; pay $0.001 USDC per call via x402 on Base.
Side effects
- Malformed CAIP-19 string returns valid:false with no caip2 or asset_namespace
- Unrecognized chain or namespace may return valid:false
- Missing 'id' field in request body causes a 400 error
- Payment failure via x402 returns a 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| id | string | CAIP-19 asset id |
Output
Schema · Response
{
"type": "json",
"example": {
"caip2": "eip155:8453",
"valid": true,
"asset_namespace": "erc20"
}
}Tags
x402
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