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Agent402 CAIP-2 Chain ID Parser
x402
Agent402 CAIP-2 Chain ID Parser 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).
Parses and validates CAIP-2 chain identifiers (e.g. eip155:8453, solana:mainnet) into their namespace, reference, and human-readable label components
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 fields: label (human-readable chain name, e.g. 'Base'), valid (boolean indicating if the CAIP-2 ID is recognized and well-formed), namespace (e.g. 'eip155'), and reference (e.g. '8453').
Example use cases
Resolve chain before multi-chain routing
“I'm about to route a transaction and I have the chain ID eip155:137 — can you tell me what blockchain that is and confirm it's a valid CAIP-2 identifier?”
Validate user-submitted chain ID
“A user just submitted the chain ID solana:mainnet in a form — can you check if that's a valid CAIP-2 ID and break it down into its namespace and reference?”
Label chain for display in UI
“I need a human-readable label for the chain eip155:1 so I can show it in the UI — can you look it up and give me the name?”
Technical details
Endpoint
GEThttps://agent402.co.uk/v1/chain/caip2When to prefer
Use this endpoint whenever an agent needs to programmatically parse, validate, or label a CAIP-2 chain identifier during multi-chain workflows — especially when routing transactions, displaying chain names to users, or validating chain IDs submitted by users. Prefer this over manual string splitting when authoritative namespace/reference extraction and validity confirmation are required.
Side effects
- Missing or malformed 'id' query parameter returns an error
- Unrecognized CAIP-2 chain returns valid:false or an error
- Incorrect format (e.g. missing colon separator) may yield invalid parse result
- Network timeout on rare occasions
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"label": "Base",
"valid": true,
"namespace": "eip155",
"reference": "8453"
}
}Tags
x402
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