---
title: "Replace String"
method: POST
path: "/api/editor/str-replace"
tags: ["editor"]
---

# Replace String

`POST /api/editor/str-replace`

Replaces all occurrences of a string in a file with a new string.

## Request body

- StrReplaceParams
  - `path` string, required — File path to modify
  - `old_str` string, required — String to replace
  - `new_str` string, required — Replacement string

## Response `204`

Successfully replaced string

## Other responses

- `404` — File not found
- `422` — Validation Error
- `500` — Internal server error

## Changes

- **2026-07-13** `5424450258fc` — 1 info
  - endpoint added
- **2025-01-13** `a2d864f3a8db` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/cuse-dev/apis/fastapi/changes/api/editor/str-replace/post.md)

---

[API](https://skmtc.dev/cuse-dev/apis/fastapi.md) · [All operations](https://skmtc.dev/cuse-dev/apis/fastapi/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/cuse-dev/fastapi/revisions/5424450258fc/schema)