> ## Documentation Index > Fetch the complete documentation index at: https://docs.kaleidoswap.com/llms.txt > Use this file to discover all available pages before exploring further. # Estimate LSPS1 fees > Estimate LSPS1 channel fees without creating an order. When the client is purchasing assets, a fresh `rfq_id` is required so the asset price can be folded into the total fee calculation. ## OpenAPI ````yaml /openapi.json post /api/v1/lsps1/estimate_fees openapi: 3.1.0 info: title: Kaleidoswap RGB-LSP API summary: Public KaleidoSwap Maker API contract description: >- Public Maker API for KaleidoSwap market data, quotes, atomic swaps, and RGB LSPS1 channel operations. Maker endpoints support Bearer API-key authentication. During rollout, deployments may accept anonymous requests while attribution is collected; once API-key enforcement is enabled, requests without a valid `kld_...` key return `401`. Use the per-order `access_token` returned by LSPS1 channel-order creation when polling protected order status endpoints or submitting a rate decision after the maker requests client confirmation. version: 0.2.0 termsOfService: https://kaleidoswap.com/terms contact: name: Kaleidoswap Team email: info@kaleidoswap.com url: https://kaleidoswap.com license: name: MIT url: https://opensource.org/licenses/MIT x-support: email: contact@kaleidoswap.com documentation: https://docs.kaleidoswap.com/api-reference/introduction x-build-info: version: archive/settlement-backends-pre-removal-7-gb8788aa2 commit: b8788aa257ea4a01ac0dffc1826cf3bcf1caf09f buildDate: '2026-08-05T09:57:35.455127+00:00' servers: - url: http://localhost:8000 description: Local development security: [] tags: - name: lsps1 description: >- RGB LSPS1 liquidity endpoints for capability discovery, channel-order creation, fee estimation, order tracking, rate decisions, and asset delivery retries. - name: market description: >- Public market discovery APIs for assets, trading pairs, routes, and RFQ-based quote requests. - name: swaps description: >- Atomic swap APIs used by direct RLN integrations to initialize, execute, and track swaps. paths: /api/v1/lsps1/estimate_fees: post: tags: - lsps1 summary: Estimate LSPS1 fees description: >- Estimate LSPS1 channel fees without creating an order. When the client is purchasing assets, a fresh `rfq_id` is required so the asset price can be folded into the total fee calculation. operationId: estimateLspFees parameters: [] requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/EstimateFeesRequest' examples: asset_purchase_fee_estimate: summary: Estimate asset-backed channel order value: lsp_balance_sat: 150000 client_balance_sat: 50000 channel_expiry_blocks: 4032 asset_id: rgb:2NZGjyz-pJePUgegh-RLHbpx1Hy-iZMagWiZZ-qY4AxGymW-yCEYwwB client_asset_amount: 2500 rfq_id: 8e6635fb-ab37-4aed-89f4-bc9c98fb8b49 responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/EstimateFeesResponse' '400': description: The LSPS1 parameters or quote reference are invalid. content: application/json: example: error_code: LSPS1_INVALID_PARAMS message: >- RFQ ID is required when purchasing assets (client_asset_amount > 0). Please request a quote first. details: code: -32602 property: rfq_id message: >- RFQ ID is required when purchasing assets (client_asset_amount > 0). Please request a quote first. request_id: req_01HV8Q9X7G0Q7Y3Z schema: $ref: '#/components/schemas/KaleidoErrorResponse' '401': description: Missing or invalid Bearer API key. content: application/json: example: error: missing_api_key schema: $ref: '#/components/schemas/ApiKeyAuthErrorResponse' '422': description: Request validation failed before reaching application logic. content: application/json: example: detail: - loc: - body - rfq_id msg: Field required type: missing schema: $ref: '#/components/schemas/FastAPIValidationErrorResponse' '429': description: Too many requests. Respect the rate-limit headers before retrying. content: application/json: example: error_code: RATE_LIMIT_EXCEEDED message: Too many requests details: retry_after: 60 request_id: req_01HV8Q9X7G0Q7Y3Z schema: $ref: '#/components/schemas/KaleidoErrorResponse' '500': description: Unhandled server error. content: application/json: example: error_code: INTERNAL_ERROR message: Internal Server Error details: {} request_id: req_01HV8Q9X7G0Q7Y3Z schema: $ref: '#/components/schemas/KaleidoErrorResponse' '503': description: The backing LSP node or required service is unavailable. content: application/json: example: error_code: LSPS1_NODE_UNREACHABLE message: LSP node unreachable details: code: 102 message: LSP node is unreachable request_id: req_01HV8Q9X7G0Q7Y3Z schema: $ref: '#/components/schemas/KaleidoErrorResponse' security: - KaleidoApiKey: [] components: schemas: EstimateFeesRequest: properties: lsp_balance_sat: type: integer minimum: 0 title: Lsp Balance Sat client_balance_sat: type: integer minimum: 0 title: Client Balance Sat channel_expiry_blocks: type: integer minimum: 1 title: Channel Expiry Blocks token: anyOf: - type: string - type: 'null' title: Token asset_id: anyOf: - type: string - type: 'null' title: Asset Id lsp_asset_amount: anyOf: - type: integer - type: 'null' title: Lsp Asset Amount client_asset_amount: anyOf: - type: integer - type: 'null' title: Client Asset Amount rfq_id: anyOf: - type: string - type: 'null' title: Rfq Id type: object required: - lsp_balance_sat - client_balance_sat - channel_expiry_blocks title: EstimateFeesRequest description: Request model for estimating channel fees EstimateFeesResponse: properties: setup_fee: type: integer minimum: 0 title: Setup Fee capacity_fee: type: integer minimum: 0 title: Capacity Fee duration_fee: type: integer minimum: 0 title: Duration Fee total_fee: type: integer minimum: 0 title: Total Fee applied_discount: anyOf: - type: number maximum: 1 minimum: 0 - type: 'null' title: Applied Discount discount_code: anyOf: - type: string - type: 'null' title: Discount Code type: object required: - setup_fee - capacity_fee - duration_fee - total_fee title: EstimateFeesResponse description: Response model for LSPS1 fee estimation KaleidoErrorResponse: properties: error_code: type: string title: Error Code description: Stable machine-readable application error code examples: - PAIR_NOT_FOUND message: type: string title: Message description: Human-readable error message examples: - 'Trading pair not found: BTC/USDT' details: additionalProperties: true type: object title: Details description: Optional structured error details request_id: type: string title: Request Id description: Request correlation identifier for support and debugging examples: - req_01HV8Q9X7G0Q7Y3Z type: object required: - error_code - message - request_id title: KaleidoErrorResponse ApiKeyAuthErrorResponse: properties: error: type: string title: Error description: API-key authentication error code examples: - missing_api_key - invalid_api_key type: object required: - error title: ApiKeyAuthErrorResponse FastAPIValidationErrorResponse: properties: detail: items: $ref: '#/components/schemas/ValidationErrorDetail' type: array title: Detail type: object required: - detail title: FastAPIValidationErrorResponse ValidationErrorDetail: properties: loc: items: anyOf: - type: string - type: integer type: array title: Loc description: Location of the validation failure examples: - - body - rfq_id msg: type: string title: Msg description: Validation error message examples: - Field required type: type: string title: Type description: FastAPI/Pydantic validation error type examples: - missing type: object required: - loc - msg - type title: ValidationErrorDetail securitySchemes: KaleidoApiKey: type: http scheme: bearer bearerFormat: Kaleido API key description: Pass a Kaleido API key such as `kld_live_c_...`. ````