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

# Zap-In — Submit and land zap-in transactions

> Submit signed zap-in transactions via Jito bundles for on-chain execution



## OpenAPI

````yaml /api-reference/openapi.json post /pools/landing-add-tx
openapi: 3.0.0
info:
  title: LP Agent Open API
  version: 1.0.0
  description: |+
    Public API for LP Agent

    **Authentication**

    All endpoints require an API key passed via the `x-api-key` header.

servers:
  - url: https://api.lpagent.io/open-api/v1
    description: Production
security:
  - apiKeyAuth: []
tags: []
paths:
  /pools/landing-add-tx:
    post:
      tags:
        - Pools
      summary: Zap-In — Submit and land zap-in transactions
      description: >-
        Submit signed zap-in transactions via Jito bundles for on-chain
        execution
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - lastValidBlockHeight
                - addLiquidityTxsWithJito
              properties:
                lastValidBlockHeight:
                  type: integer
                  description: Last valid block height for the transactions
                swapTxsWithJito:
                  type: array
                  items:
                    type: string
                  description: Serialized swap transactions with Jito tips (base64)
                  default: []
                addLiquidityTxsWithJito:
                  type: array
                  items:
                    type: string
                  description: >-
                    Serialized add liquidity transactions with Jito tips
                    (base64)
                meta:
                  type: object
                  description: Optional metadata
      responses:
        '200':
          description: Successfully submitted and landed transactions
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    example: success
                  data:
                    type: object
                    properties:
                      method:
                        type: string
                        enum:
                          - JITO
                      signature:
                        type: string
        '400':
          description: Invalid parameters provided
        '500':
          description: Internal server error
components:
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: API key for authentication

````