send_native_meta_transaction
Relays a native meta-transaction (EIP-712 signed function call) via Biconomy. Requires ABI-encoded function signature and sigR/sigS/sigV from a locally-signed EIP-712 payload. Returns: relay transaction data.
Category: Meta-transactions & broadcast.
Returns unsigned tx? Likely yes — sign locally and broadcast via send_signed_transaction or a meta-tx relay.
Input schema
| Field | Type | Required | Description |
|---|---|---|---|
contractAddress | string | yes | Valid Ethereum address (e.g. '0xAbCd...' or '0xabcd...'). Mixed-case addresses are checksum-validated; all-lowercase and all-uppercase addresses are also accepted. |
functionSignature | string | yes | |
sigR | string | yes | |
sigS | string | yes | |
sigV | string | number | yes | |
configId | string | yes | Boson/Fermion Protocol deployment identifier. Format: '<env>-<chainId>-<index>' e.g. 'production-137-0' (Polygon mainnet), 'testing-80002-0' (Amoy testnet). Call get_config_ids to list all valid values for this server. |
signerAddress | — | yes | Ethereum address that will sign and send this transaction. Must match the wallet that will sign the returned transaction locally. |
Related
- Reference → MCP tools — full catalogue.
- Build for AI agents → The 3-step signing pattern — what to do with returned unsigned transactions.
- Concepts → Signing & meta-transactions — canonical signing reference.