> ## Documentation Index > Fetch the complete documentation index at: https://docs.vibechain.com/llms.txt > Use this file to discover all available pages before exploring further. # Quote a creator-token buy or sell > Returns a block-pinned Uniswap v4 Quoter result. For `BUY`, `amount` is native ETH Wei and output is raw creator-token units. For `SELL`, `amount` is raw creator-token units and output is native ETH Wei. `minimumOut` is 99% of the quoted output. This is not a transaction and does not replace immediate wallet-side simulation or a deadline. ## OpenAPI ````yaml /api-reference/retardmarket_openapi.yml get /markets/{marketId}/quote openapi: 3.0.3 info: title: retard.market API version: 12.27.0 description: | Attested Robinhood Chain reads for the experimental memecoin launch, trading, and staking protocol behind `/retard`. Each market is built around a fixed-supply creator memecoin paired with native ETH in a Uniswap v4 pool. The API exposes runtime identity, markets, quotes, activity, wallet holdings and positions, and funded creator-tip proofs. This protocol is experimental. Contracts, economics, API responses, and availability may change, and funds may be lost. Verify the runtime contract graph and simulate every wallet transaction immediately before signing. Use is subject to the VibeChain Terms of Service at https://vibechain.com/terms. Every endpoint requires a caller-specific VibeChain API key in the `API-KEY` header. Create one at https://docs.vibechain.com/api-reference/retardmarket-intro. servers: - url: https://build.vibechain.com/api/retard/v1227 security: - ApiKeyAuth: [] tags: - name: Runtime description: Attested deployment identity and readiness - name: Markets description: Creator markets, quotes, schedules, and bounded activity - name: Wallets description: Wallet positions, holdings, and activity - name: Tips description: Safe-funded creator-tip root proofs - name: Airdrop description: Status of the deliberately parked airdrop feature paths: /markets/{marketId}/quote: get: tags: - Markets summary: Quote a creator-token buy or sell description: | Returns a block-pinned Uniswap v4 Quoter result. For `BUY`, `amount` is native ETH Wei and output is raw creator-token units. For `SELL`, `amount` is raw creator-token units and output is native ETH Wei. `minimumOut` is 99% of the quoted output. This is not a transaction and does not replace immediate wallet-side simulation or a deadline. operationId: quoteRetardTrade parameters: - $ref: '#/components/parameters/MarketId' - in: query name: side required: true schema: $ref: '#/components/schemas/TradeSide' - in: query name: amount required: true description: Positive input amount as a decimal string schema: $ref: '#/components/schemas/PositiveAmount' responses: '200': description: Block-pinned trade quote content: application/json: schema: $ref: '#/components/schemas/TradeQuote' '400': $ref: '#/components/responses/InvalidInput' '404': $ref: '#/components/responses/MarketNotFound' '429': $ref: '#/components/responses/ApiKeyOrRateLimit' '500': $ref: '#/components/responses/InternalError' '503': $ref: '#/components/responses/Unavailable' components: parameters: MarketId: in: path name: marketId required: true description: Public numeric market ID schema: type: integer minimum: 0 schemas: TradeSide: type: string enum: - BUY - SELL PositiveAmount: type: string pattern: ^[1-9][0-9]{0,38}$ description: Positive unsigned integer below 2^128 TradeQuote: type: object required: - marketId - coin - side - amountIn - amountOut - minimumOut - poolKey - projectedBlock - updatedAt properties: marketId: type: integer minimum: 0 coin: $ref: '#/components/schemas/Address' side: $ref: '#/components/schemas/TradeSide' amountIn: $ref: '#/components/schemas/IntegerString' amountOut: $ref: '#/components/schemas/IntegerString' minimumOut: $ref: '#/components/schemas/IntegerString' poolKey: $ref: '#/components/schemas/PoolKey' projectedBlock: type: integer minimum: 0 updatedAt: $ref: '#/components/schemas/DateTime' Address: type: string pattern: ^0x[0-9a-fA-F]{40}$ example: '0x41B13C429675015d32377305D03222CbddB20cA0' IntegerString: type: string pattern: ^[0-9]+$ description: Unsigned integer encoded as a decimal string PoolKey: type: object required: - currency0 - currency1 - fee - tickSpacing - hooks properties: currency0: $ref: '#/components/schemas/Address' currency1: $ref: '#/components/schemas/Address' fee: type: integer example: 20000 tickSpacing: type: integer example: 200 hooks: $ref: '#/components/schemas/Address' DateTime: type: string format: date-time Error: type: object required: - error properties: error: type: string ApiKeyError: allOf: - $ref: '#/components/schemas/Error' - type: object required: - docs properties: error: type: string enum: - API_KEY_REQUIRED_OR_RATE_LIMITED docs: type: string format: uri responses: InvalidInput: description: Invalid wallet, market, cursor, limit, side, or amount content: application/json: schema: $ref: '#/components/schemas/Error' MarketNotFound: description: Market is absent, internal, or retired from public discovery content: application/json: schema: $ref: '#/components/schemas/Error' ApiKeyOrRateLimit: description: API key missing/invalid or the caller allowance is exhausted headers: Retry-After: schema: type: integer description: Seconds until the current rate window resets content: application/json: schema: $ref: '#/components/schemas/ApiKeyError' InternalError: description: The pinned chain read or simulation could not be completed content: application/json: schema: $ref: '#/components/schemas/Error' Unavailable: description: Configuration, reader, or proof registry is unavailable content: application/json: schema: $ref: '#/components/schemas/Error' securitySchemes: ApiKeyAuth: type: apiKey in: header name: API-KEY description: Caller-specific VibeChain API key created through `/apikey/create`. ````