---
title: "Zap-Out — Submit and land zap-out transactions"
method: POST
path: "/position/landing-decrease-tx"
tags: ["Position"]
---

# Zap-Out — Submit and land zap-out transactions

`POST /position/landing-decrease-tx`

Submit signed zap-out (decrease position) transactions via Jito bundles for on-chain execution. Provides better landing rate than direct RPC submission.

## Request body

- object
  - `lastValidBlockHeight` integer, required — Last valid block height for the transactions
  - `closeTxs` string[] — Close position transactions (base64)
  - `swapTxs` string[] — Swap transactions (base64)
  - `closeTxsWithJito` string[], required — Close position transactions with Jito tips (base64)
  - `swapTxsWithJito` string[] — Swap transactions with Jito tips (base64)

## Response `200`

Successfully submitted and landed transactions

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

## Other responses

- `400` — Invalid parameters or transaction execution failed
- `500` — Internal server error

## Changes

- **2026-03-16** `df660f892e21` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/lpagent/apis/lp-agent-open-api/changes/position/landing-decrease-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/f90fd69d221b/schema)