> ## Documentation Index > Fetch the complete documentation index at: https://docs.primev.xyz/llms.txt > Use this file to discover all available pages before exploring further. # SendBid > Send a bid to the bidder mev-commit node. The bid is a message from the bidder to the provider with the transaction hashes and the amount of ETH that the bidder is willing to pay to the provider for including the transaction in the block. The bid also includes the block number that the bidder wants to include the transaction in, the start and end timestamps for the bid decay. The bidder can optionally include the raw transaction payloads (hex encoded RLP) instead of transaction hashes. ## OpenAPI ````yaml /v1.2.x/api-reference/bidder-openapi-spec.json post /v1/bidder/bid openapi: 3.0.0 info: title: Bidder API version: 1.2.0-oas3 license: name: Business Source License 1.1 url: https://github.com/primev/mev-commit/blob/main/LICENSE servers: [] security: [] paths: /v1/bidder/bid: post: summary: SendBid description: >- Send a bid to the bidder mev-commit node. The bid is a message from the bidder to the provider with the transaction hashes and the amount of ETH that the bidder is willing to pay to the provider for including the transaction in the block. The bid also includes the block number that the bidder wants to include the transaction in, the start and end timestamps for the bid decay. The bidder can optionally include the raw transaction payloads (hex encoded RLP) instead of transaction hashes. operationId: Bidder_SendBid requestBody: content: application/json: schema: $ref: '#/components/schemas/bidderapiv1Bid' description: Unsigned bid message from bidders to the bidder mev-commit node. required: true responses: '200': description: A successful response.(streaming responses) content: application/json: schema: type: object properties: result: $ref: '#/components/schemas/bidderapiv1Commitment' error: $ref: '#/components/schemas/googlerpcStatus' title: Stream result of bidderapiv1Commitment default: description: An unexpected error response. content: application/json: schema: $ref: '#/components/schemas/googlerpcStatus' components: schemas: bidderapiv1Bid: type: object example: amount: '1000000000000000000' block_number: 123456 decay_end_timestamp: 1630000000 decay_start_timestamp: 1630000000 reverting_tx_hashes: - fe4cb47db3630551beedfbd02a71ecc69fd59758e2ba699606e2d5c74284ffa7 slash_amount: '500000000000000000' tx_hashes: - fe4cb47db3630551beedfbd02a71ecc69fd59758e2ba699606e2d5c74284ffa7 - 71c1348f2d7ff7e814f9c3617983703435ea7446de420aeac488bf1de35737e8 properties: txHashes: type: array items: type: string pattern: '[a-fA-F0-9]{64}' description: >- Hex string encoding of the hashes of the transactions that the bidder wants to include in the block. amount: type: string description: >- Amount of ETH that the bidder is willing to pay to the provider for including the transaction in the block. pattern: '[0-9]+' blockNumber: type: string format: int64 description: >- Max block number that the bidder wants to include the transaction in. decayStartTimestamp: type: string format: int64 description: Timestamp at which the bid starts decaying. decayEndTimestamp: type: string format: int64 description: Timestamp at which the bid ends decaying. revertingTxHashes: type: array items: type: string description: >- Optional array of tx hashes that are allowed to revert or be discarded. rawTransactions: type: array items: type: string description: >- Optional array of RLP encoded raw signed transaction payloads that the bidder wants to include in the block. slashAmount: type: string description: >- Amount of ETH that will be slashed from the provider if they fail to include the transaction. If zero, the decayed bid amount is used for slashing. pattern: '[0-9]+' bidOptions: $ref: '#/components/schemas/bidderapiv1BidOptions' description: Unsigned bid message from bidders to the bidder mev-commit node. title: Bid message required: - amount - blockNumber - decayStartTimestamp - decayEndTimestamp bidderapiv1Commitment: type: object properties: txHashes: type: array items: type: string pattern: '[a-fA-F0-9]{64}' description: >- Hex string encoding of the hash of the transaction that the bidder wants to include in the block. bidAmount: type: string description: >- Amount of ETH that the bidder has agreed to pay to the provider for including the transaction in the block. blockNumber: type: string format: int64 description: >- Max block number that the bidder wants to include the transaction in. receivedBidDigest: type: string description: >- Hex string encoding of digest of the bid message signed by the bidder. receivedBidSignature: type: string description: Hex string encoding of signature of the bidder that sent this bid. commitmentDigest: type: string description: Hex string encoding of digest of the commitment. commitmentSignature: type: string description: >- Hex string encoding of signature of the commitment signed by the provider confirming this transaction. providerAddress: type: string description: >- Hex string encoding of the address of the provider that signed the commitment signature. decayStartTimestamp: type: string format: int64 description: Timestamp at which the bid starts decaying. decayEndTimestamp: type: string format: int64 description: Timestamp at which the bid ends decaying. dispatchTimestamp: type: string format: int64 description: Timestamp at which the commitment is published. revertingTxHashes: type: array items: type: string description: >- Optional array of tx hashes that are allowed to revert or be discarded. slashAmount: type: string description: >- Amount of ETH that will be slashed from the provider if they fail to include the transaction. bidOptions: $ref: '#/components/schemas/bidderapiv1BidOptions' description: Commitment message from the provider to the bidder mev-commit node. title: Commitment message googlerpcStatus: type: object properties: code: type: integer format: int32 message: type: string details: type: array items: $ref: '#/components/schemas/protobufAny' bidderapiv1BidOptions: type: object properties: options: type: array items: $ref: '#/components/schemas/bidderapiv1BidOption' description: List of bid options for the transaction. protobufAny: type: object properties: '@type': type: string additionalProperties: {} bidderapiv1BidOption: type: object properties: positionConstraint: $ref: '#/components/schemas/bidderapiv1PositionConstraint' bidderapiv1PositionConstraint: type: object properties: anchor: $ref: '#/components/schemas/bidderapiv1PositionConstraintAnchor' basis: $ref: '#/components/schemas/bidderapiv1PositionConstraintBasis' value: type: integer format: int32 description: >- Value of the position constraint. If anchor is TOP, this is the position from the top of the block. If anchor is BOTTOM, this is the position from the bottom of the block. description: Constraint on the position of the transaction in the block. title: Position Constraint bidderapiv1PositionConstraintAnchor: type: string enum: - ANCHOR_TOP - ANCHOR_BOTTOM title: |- - ANCHOR_TOP: Position is at the top of the block - ANCHOR_BOTTOM: Position is at the bottom of the block bidderapiv1PositionConstraintBasis: type: string enum: - BASIS_PERCENTILE - BASIS_ABSOLUTE - BASIS_GAS_PERCENTILE title: |- - BASIS_PERCENTILE: Position is a percentile of the block size - BASIS_ABSOLUTE: Position is an absolute position in the block - BASIS_GAS_PERCENTILE: Position is a percentile of the gas used in the block ````