> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gomaestro.org/llms.txt
> Use this file to discover all available pages before exploring further.

> Get detailed information about a specific Bitcoin transaction in the mempool including fees and dependencies.

# Mempool Transaction Info



## OpenAPI

````yaml bitcoin/node-rpc-api/openapi.json get /mempool/transactions/{tx_hash}
openapi: 3.1.0
info:
  description: >-
    This API offers direct, low-latency access to Bitcoin full nodes via API
    (JSON-RPC protocol), giving developers reliable mempool visibility,
    transaction relay capabilities, and chain data without the hassle of running
    their own infrastructure.


    #### Key Features:

    - **Full JSON-RPC Support:** Access core Bitcoin functionality through RPC
    calls like `getblock`, `getrawtransaction`, `sendrawtransaction`, etc.

    - **Blockchain Data Retrieval:** Developers can fetch detailed information
    about blocks, transactions, and addresses.

    - **Mempool Insight:** Query unconfirmed transactions for faster, more
    responsive, real-time data access.

    - **High-Availability**: Enterprise-grade infrastructure ensures uptime,
    sync accuracy and fast transaction relay.


    #### Key Benefits for Developers:

    - Skip the operational complexity and computational overhead of maintaining
    self-hosted Bitcoin nodes.

    - Query mempool and chain data to power wallets, explorers, and backends
    with minimal latency.

    - Broadcast and verify transactions with trusted relay endpoints.

    - Build production-ready Bitcoin apps without worrying about node health,
    bandwidth, or reorg handling.
  title: Bitcoin - Node RPC API
  version: 0.1.1
servers:
  - description: Bitcoin Mainnet
    url: https://xbt-mainnet.gomaestro-api.org/v0/rpc
  - description: Bitcoin Testnet
    url: https://xbt-testnet.gomaestro-api.org/v0/rpc
security:
  - api-key: []
externalDocs:
  description: ''
  url: ''
paths:
  /mempool/transactions/{tx_hash}:
    get:
      tags:
        - Mempool
      summary: Mempool Transaction Info
      description: >-
        Returns full information for a mempool transaction: fees, inputs,
        Replace-By-Fee (RBF) flags, unconfirmed descendants, etc.

        Useful for inspecting transactions or verifying status.
      operationId: rpc_mempool_transaction_details
      parameters:
        - description: Transaction hash.
          in: path
          name: tx_hash
          required: true
          schema:
            type: string
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/api_bitcoin.MempoolTxDetailsResponseBody'
          description: OK
        '400':
          content:
            application/json:
              schema:
                oneOf:
                  - $ref: '#/components/schemas/api_bitcoin.NodeRPCError'
                  - $ref: '#/components/schemas/api_bitcoin.APIError'
          description: Invalid request.
        '500':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/api_bitcoin.APIError'
          description: Error getting mempool transaction info.
components:
  schemas:
    api_bitcoin.MempoolTxDetailsResponseBody:
      properties:
        data:
          $ref: '#/components/schemas/api_bitcoin.MempoolTxDetailsResult'
        last_updated:
          $ref: '#/components/schemas/api_bitcoin.LastUpdatedBlock'
      type: object
    api_bitcoin.NodeRPCError:
      properties:
        code:
          description: Error code returned from the API request
          example: 0
          type: integer
        node rpc error:
          description: Error returned from the API request
          example: node rpc error
          type: string
      type: object
    api_bitcoin.APIError:
      properties:
        error:
          description: Error returned from the API request
          example: Bad Request
          type: string
      type: object
    api_bitcoin.MempoolTxDetailsResult:
      properties:
        ancestorcount:
          type: integer
        ancestorsize:
          type: integer
        bip125-replaceable:
          type: boolean
        depends:
          items:
            type: string
          type: array
          uniqueItems: false
        descendantcount:
          type: integer
        descendantsize:
          type: integer
        fees:
          $ref: '#/components/schemas/api_bitcoin.TxFees'
        height:
          type: integer
        spentby:
          items:
            type: string
          type: array
          uniqueItems: false
        time:
          type: integer
        unbroadcast:
          type: boolean
        vsize:
          type: integer
        weight:
          type: integer
        wtxid:
          type: string
      type: object
    api_bitcoin.LastUpdatedBlock:
      properties:
        block_hash:
          type: string
        block_height:
          type: integer
      type: object
    api_bitcoin.TxFees:
      properties:
        ancestor:
          type: number
        base:
          type: number
        descendant:
          type: number
        modified:
          type: number
      type: object
  securitySchemes:
    api-key:
      description: Project API Key
      in: header
      name: api-key
      type: apiKey

````