---
title: "Zap-In — Submit and land zap-in transactions"
method: POST
path: "/pools/landing-add-tx"
tags: ["Pools"]
---

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

`POST /pools/landing-add-tx`

Submit signed zap-in transactions via Jito bundles for on-chain execution **Solana only** — this endpoint has no Robinhood Chain (EVM) equivalent.

## Request body

- object
  - `lastValidBlockHeight` integer, required — Last valid block height for the transactions
  - `swapTxsWithJito` string[] — Serialized swap transactions with Jito tips (base64)
  - `addLiquidityTxsWithJito` string[], required — Serialized add liquidity transactions with Jito tips (base64)
  - `meta` object — Optional metadata

## Response `200`

Successfully submitted and landed transactions

- object
  - `status` string
  - `data` object
    - `method` 'JITO'
    - `signature` string

## Other responses

- `400` — Invalid parameters provided
- `500` — Internal server error

## Changes

- **2026-03-16** `dbab3b96efd1` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/lpagent/apis/lp-agent-open-api/changes/pools/landing-add-tx/post.md)

---

[API](https://skmtc.dev/lpagent/apis/lp-agent-open-api.md) · [All operations](https://skmtc.dev/lpagent/apis/lp-agent-open-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/lpagent/lp-agent-open-api/revisions/c06c82244536/schema)