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Blockscout Advanced Filters - List Available Methods
x402
Blockscout Advanced Filters - List Available Methods is a paid API for AI agents from api.blockscout.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-12).
Retrieves a list of smart contract method names and IDs available for advanced transaction filtering on a specific blockchain network
Price / call$0.002
Success—
StatusUnknown
How this service works
Explore crypto activities with Blockscout's multichain search. Find transactions, addresses, tokens, and dapps across top blockchain networks — your go-to explorer for cross-chain blockchain data
Output
Returns a JSON array of objects, each containing a method 'name' (human-readable smart contract function name) and 'method_id' (4-byte hex selector), representing all contract methods that can be used as filter criteria in Blockscout's advanced transaction search for the specified chain.
Example use cases
Discover filterable methods for DeFi analysis
“I want to analyze DeFi swaps on Polygon — can you pull the list of smart contract method names and IDs available for advanced transaction filtering on chain ID 137 from Blockscout?”
Build a transaction filter UI for a dapp
“I'm building a dapp explorer and need to know which contract method IDs are available as filter options on Base (chain ID 8453) — can you fetch them from Blockscout's advanced filters?”
Narrow down on-chain activity by method
“I'm trying to filter Arbitrum transactions by method type — can you get the list of all available method names and their IDs for chain ID 42161 from Blockscout so I know what options I have?”
Technical details
Endpoint
GEThttps://api.blockscout.com/%7Bchain_id%7D/api/v2/advanced-filters/methodsWhen to prefer
Use this endpoint when you need to discover which smart contract method identifiers are supported as filter criteria for advanced transaction searches on a specific chain via Blockscout. It is a prerequisite step before applying method-based filters in Blockscout's advanced filter queries. Prefer this over generic blockchain explorers when you need multichain support and structured filter metadata.
Side effects
- Invalid or unsupported chain_id returns empty list or 404
- Network connectivity issues result in timeout
- Malformed query parameter q returns error or empty results
- Chain not indexed by Blockscout returns no data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": [
{
"name": "string",
"method_id": "string"
}
]
}Tags
x402
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