---
title: "Extend Buff"
method: POST
path: "/api/buffs/{buff_id}/extend"
tags: ["Buffs"]
---

# Extend Buff

`POST /api/buffs/{buff_id}/extend`

## Request

- Base URL: `https://api.agentstack.tech` (the document declares no server; this is the origin it was published from)
- URL: `https://api.agentstack.tech/api/buffs/{buff_id}/extend`
- Auth: one of:
  - API key in header `X-API-Key`
  - HTTP bearer

Продлить бафф

## Path parameters

- `buff_id` string, required: Buff ID

## Headers

- `Idempotency-Key` string

## Request body

- ExtendBuffRequest: Request model for extending a buff
  - `entity_id` integer, required
  - `entity_kind` string, required
  - `additional_days` integer, nullable
  - `project_id` integer, nullable

## Response `200`

Successful Response

- unknown

## Other responses

- `400`: Bad Request
- `401`: Unauthorized
- `403`: Forbidden
- `404`: Not Found
- `409`: Conflict
- `422`: Validation Error
- `429`: Too Many Requests
- `500`: Internal Server Error

---

[API](https://skmtc.dev/agentstack/apis/agentstack-core-api.md) · [All operations](https://skmtc.dev/agentstack/apis/agentstack-core-api/llms.txt) · [OpenAPI document](https://skmtc.dev/agentstack/apis/agentstack-core-api/revisions/8ecf3406e74a?raw)