---
title: "Start integrity check"
method: PUT
path: "/contracts/{id}/integrity"
tags: ["contracts"]
---

# Start integrity check

`PUT /contracts/{id}/integrity`

Starts a background integrity check that reads and verifies every sector in the contract.

## Path parameters

- `id` string, required

## Response `200`

Integrity check started.

## Changes

> 8 revisions in range; 1 could not be searched.

- **2026-02-28** `087a58eeff36` — 1 breaking, 1 info
  - removed the success response with the status `202`
  - added the success response with the status `200`
- **2025-10-08** `103993fc0091` — 1 breaking, 1 info
  - removed the success response with the status `200`
  - added the success response with the status `202`

[Change history](https://skmtc.dev/siafoundation/apis/hostd-api/changes/contracts/:id/integrity/put.md)

---

[API](https://skmtc.dev/siafoundation/apis/hostd-api.md) · [All operations](https://skmtc.dev/siafoundation/apis/hostd-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/siafoundation/hostd-api/revisions/08ff756929fc/schema)