openapi: 3.0.3
info:
  title: Litecoin Core JSON-RPC Addresses Fees API
  description: 'The primary programmatic interface to a Litecoin Core node. Clients send HTTP POST requests with JSON-RPC 2.0 payloads to interact with the node. Methods cover blockchain state, block and transaction retrieval, mempool inspection, network peers, mining, UTXO queries, address validation, raw transaction construction and broadcast, and fee estimation. Authentication is required via cookie file or rpcauth credentials. The daemon listens on port 9332 (mainnet), 19332 (testnet), and 19443 (regtest).

    '
  version: '0.21'
  contact:
    name: Litecoin Project
    url: https://github.com/litecoin-project/litecoin
  license:
    name: MIT
    url: https://github.com/litecoin-project/litecoin/blob/master/COPYING
servers:
- url: http://localhost:9332
  description: Litecoin Core mainnet
- url: http://localhost:19332
  description: Litecoin Core testnet
- url: http://localhost:19443
  description: Litecoin Core regtest
security:
- basicAuth: []
tags:
- name: Fees
  description: Fee estimation and recommendation endpoints
paths:
  /v1/fees/recommended:
    get:
      operationId: getFeesRecommended
      summary: Get recommended fees
      description: 'Returns current recommended fee rates for fast confirmation, half-hour confirmation, hour confirmation, economy, and minimum relay.

        '
      responses:
        '200':
          description: Recommended fee rates in sat/vB
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FeeRecommendations'
      tags:
      - Fees
  /v1/fees/mempool-blocks:
    get:
      operationId: getMempoolBlocks
      summary: Get mempool as projected blocks
      description: Returns the mempool projected into upcoming blocks with fee rate ranges.
      responses:
        '200':
          description: Projected mempool blocks
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/MempoolBlock'
      tags:
      - Fees
components:
  schemas:
    FeeRecommendations:
      type: object
      properties:
        fastestFee:
          type: integer
          description: Fee rate for next-block confirmation in sat/vB
        halfHourFee:
          type: integer
          description: Fee rate for ~30 minute confirmation in sat/vB
        hourFee:
          type: integer
          description: Fee rate for ~1 hour confirmation in sat/vB
        economyFee:
          type: integer
          description: Economy fee rate in sat/vB
        minimumFee:
          type: integer
          description: Minimum relay fee rate in sat/vB
    MempoolBlock:
      type: object
      properties:
        blockSize:
          type: integer
        blockVSize:
          type: number
        nTx:
          type: integer
        totalFees:
          type: integer
        medianFee:
          type: number
        feeRange:
          type: array
          items:
            type: number
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: 'HTTP Basic Authentication using credentials from the .litecoin/.cookie file or configured via rpcauth in litecoin.conf.

        '
externalDocs:
  description: Litecoin Core JSON-RPC Interface Documentation
  url: https://github.com/litecoin-project/litecoin/blob/master/doc/JSON-RPC-interface.md