> ## Documentation Index > Fetch the complete documentation index at: https://v3.docs.derive.xyz/llms.txt > Use this file to discover all available pages before exploring further. # Preview the best quote for an RFQ > Taker-side dry run that evaluates a prospective RFQ (its legs and intended direction) without creating anything. Returns the best available maker quote if one exists, along with the expected fee, validity, projected liquidation prices, and realized-PnL estimate for taking it. ## OpenAPI ````yaml /openapi.json post /private/rfq_get_best_quote openapi: 3.1.0 info: title: Derive v3 API version: 0.2.0 description: JSON-RPC 2.0 methods, served over WebSocket and HTTP POST. servers: - url: https://api.derive.xyz/v3 description: Production (HTTP POST base) - url: https://testnet.api.derive.xyz/v3 description: Testnet (HTTP POST base) security: [] tags: - name: Subaccounts description: >- List, inspect, and label subaccounts, portfolios, positions, and collateral. - name: Session Keys description: Register, edit, and list delegated signing keys. - name: Account description: Wallet-level account information and settings. - name: Orderbook description: Place, replace, cancel, and query orders, trigger orders, and algos. - name: RFQ description: 'Request-for-quote: send RFQs, quote, and execute block trades.' - name: Vault Shareholders description: >- Deposit into and withdraw from vaults, and track shares, requests, and performance. - name: Vault Curators description: >- Create and operate curated vaults: settle deposit and withdrawal requests, and manage vault metadata. - name: History description: >- Per-account historical records: orders, trades, transfers, and settlements. - name: Market Maker Protection description: Configure, read, and reset market-maker protection. - name: Transfers & Withdrawals description: Move collateral between subaccounts, to other wallets, and on-chain. - name: System description: Rate limits and transaction lookups. - name: Market Data description: Instruments, currencies, tickers, and market-wide feeds. - name: Referrals description: Referral codes and program performance. - name: Other description: Uncategorized. paths: /private/rfq_get_best_quote: post: tags: - RFQ summary: Preview the best quote for an RFQ description: >- Taker-side dry run that evaluates a prospective RFQ (its legs and intended direction) without creating anything. Returns the best available maker quote if one exists, along with the expected fee, validity, projected liquidation prices, and realized-PnL estimate for taking it. operationId: private_rfq_get_best_quote requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/RfqGetBestQuoteRequest' responses: '200': description: Success content: application/json: schema: $ref: '#/components/schemas/RfqGetBestQuoteResponse' default: description: JSON-RPC error (see Error Codes) components: schemas: RfqGetBestQuoteRequest: type: object required: - direction - legs - subaccount_id properties: direction: true legs: true subaccount_id: type: integer format: uint64 minimum: 0 RfqGetBestQuoteResponse: type: object required: - direction - down_liquidation_price - estimated_fee - estimated_realized_pnl - estimated_realized_pnl_excl_fees - estimated_total_cost - filled_pct - is_valid - orderbook_total_cost - post_initial_margin - post_liquidation_price - pre_initial_margin - suggested_max_fee - up_liquidation_price properties: best_quote: anyOf: - $ref: '#/components/schemas/PublicQuote' - type: 'null' direction: $ref: '#/components/schemas/Direction' down_liquidation_price: description: >- Optional decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits, or null; a string or JSON number is accepted type: - string - 'null' format: decimal estimated_fee: description: >- Decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits; a string or JSON number is accepted type: string format: decimal estimated_realized_pnl: description: >- Decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits; a string or JSON number is accepted type: string format: decimal estimated_realized_pnl_excl_fees: description: >- Decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits; a string or JSON number is accepted type: string format: decimal estimated_total_cost: description: >- Decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits; a string or JSON number is accepted type: string format: decimal filled_pct: description: >- Non-negative decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits; a string or JSON number is accepted type: string format: decimal invalid_reason: type: - string - 'null' is_valid: type: boolean orderbook_total_cost: description: >- Optional decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits, or null; a string or JSON number is accepted type: - string - 'null' format: decimal post_initial_margin: description: >- Decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits; a string or JSON number is accepted type: string format: decimal post_liquidation_price: description: >- Optional decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits, or null; a string or JSON number is accepted type: - string - 'null' format: decimal pre_initial_margin: description: >- Decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits; a string or JSON number is accepted type: string format: decimal suggested_max_fee: description: >- Decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits; a string or JSON number is accepted type: string format: decimal up_liquidation_price: description: >- Optional decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits, or null; a string or JSON number is accepted type: - string - 'null' format: decimal PublicQuote: type: object required: - cancel_reason - creation_timestamp - direction - fill_pct - last_update_timestamp - legs - legs_hash - liquidity_role - quote_id - rfq_id - status - subaccount_id - wallet properties: cancel_reason: $ref: '#/components/schemas/RFQCancelReason' creation_timestamp: type: integer format: int64 direction: $ref: '#/components/schemas/Direction' fill_pct: description: >- Non-negative decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits; a string or JSON number is accepted type: string format: decimal last_update_timestamp: type: integer format: int64 legs: type: array items: $ref: '#/components/schemas/PricedLegParamsAndResponse' legs_hash: type: string liquidity_role: $ref: '#/components/schemas/LiquidityRole' quote_id: description: UUID v4 string type: string format: uuid rfq_id: description: UUID v4 string type: string format: uuid status: $ref: '#/components/schemas/RFQStatus' subaccount_id: type: integer format: int64 wallet: $ref: '#/components/schemas/Address' Direction: type: string enum: - buy - sell RFQCancelReason: type: string enum: - '' - user_request - insufficient_margin - signed_max_fee_too_low - mmp_trigger - cancel_on_disconnect - session_key_deregistered - subaccount_withdrawn - rfq_no_longer_open - compliance PricedLegParamsAndResponse: type: object required: - amount - direction - instrument_name - price properties: amount: description: >- Non-negative decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits; a string or JSON number is accepted type: string format: decimal direction: $ref: '#/components/schemas/Direction' instrument_name: type: string price: description: >- Non-negative decimal string of the human value (e.g. `"1.5"`), up to 12 fractional digits; a string or JSON number is accepted type: string format: decimal LiquidityRole: type: string enum: - maker - taker RFQStatus: type: string enum: - open - filled - cancelled - expired Address: description: 20-byte Ethereum address as a 0x-prefixed lowercase hex string. type: string maxLength: 42 minLength: 42 pattern: ^0x[0-9a-fA-F]{40}$ ```` ## Related topics - [RFQ Trading](/trading/rfq.md) - [Subaccount best quotes](/api-reference/channels/subaccountbestquotes.md) - [Preview EIP-712 signing data for a quote](/api-reference/rfq/preview-eip-712-signing-data-for-a-quote.md)