Pay-per-use DeFi token metadata lookup via x402 micropayments on Base
What it does
This endpoint is part of the Silverback x402 DeFi Intelligence API, which provides 11 pay-per-use endpoints for DeFi data and execution. The specific endpoint at `/api/v1/token-metadata/0x4200000000000000000000000000000000000006` appears to serve token metadata for the WETH contract on Base (address 0x4200000000000000000000000000000000000006). However, this endpoint is not documented in the published OpenAPI spec, which covers 11 other endpoints (swap, technical-analysis, defi-yield, arbitrage-scanner, token-audit, whale-moves, wallet-portfolio, pool-analysis, swap-quote, jupiter-quote, holder-analytics). The probe returned 404 on both GET and POST, meaning the endpoint may not be live or may have been removed.
The broader Silverback API accepts payments in USDC on Base, Solana, and SKALE via the x402 micropayment protocol. Pricing for documented endpoints ranges from $0.01 to $0.05 per call depending on complexity. All responses return JSON with a `success` boolean field. The platform supports ERC-8004 on-chain identity and is designed for autonomous agent consumption.
Since this specific token-metadata endpoint returned 404 and is absent from the OpenAPI specification, it may be an undocumented or deprecated route. Agents looking for token metadata should verify availability before relying on this path, or consider using the documented token-audit or holder-analytics endpoints for related on-chain token information.
Capabilities
Use cases
- —Retrieving metadata (name, symbol, decimals) for ERC-20 tokens on Base
- —Enriching agent workflows with token contract details before executing swaps
- —Validating token contract addresses as part of a DeFi analysis pipeline
Fit
Best for
- —AI agents needing on-chain token metadata in a pay-per-call model
- —DeFi bots that need to resolve token symbols and decimals before trading
- —Automated portfolio tools that enrich holdings with token metadata
Not for
- —Bulk historical token data retrieval — this is a single-token lookup
- —Non-crypto use cases with no need for ERC-20 contract information
- —Users who need free token metadata (public RPCs or block explorers may suffice)
Quick start
# This endpoint returned 404 during probing and is not in the OpenAPI spec.
# Try the documented token-audit endpoint instead:
curl -X POST https://x402.silverbackdefi.app/api/v1/token-audit \
-H 'Content-Type: application/json' \
-d '{"token": "0x4200000000000000000000000000000000000006"}'Endpoint
Quality
The endpoint returned 404 on both GET and POST and is not listed in the published OpenAPI specification. No schema, pricing, or response examples are available for this specific path. The broader Silverback API is well-documented, but this particular route appears undocumented or deprecated.
Warnings
- —Endpoint returned 404 on both POST and GET — may be removed or undocumented
- —Not present in the published OpenAPI spec which lists 11 other endpoints
- —No request/response schema available for this specific path
- —Price for this endpoint is unknown — not listed in the pricing tiers
Citations
- —Silverback provides 11 pay-per-use DeFi intelligence endpoints via x402 micropaymentshttps://x402.silverbackdefi.app
- —Pricing tiers range from $0.01 to $0.05 per callhttps://x402.silverbackdefi.app
- —Payments accepted in USDC on Base, Solana, and SKALEhttps://x402.silverbackdefi.app
- —0x4200000000000000000000000000000000000006 is the WETH contract on Basehttps://x402.silverbackdefi.app
- —The endpoint returned 404 on both POST and GET probeshttps://x402.silverbackdefi.app/api/v1/token-metadata/0x4200000000000000000000000000000000000006