---
title: "L3 connected-pool: admit/renew an engine node's Compute-Unit lease against the pool"
method: POST
path: "/v1/deployment/node/heartbeat"
tags: ["deployment"]
---

# L3 connected-pool: admit/renew an engine node's Compute-Unit lease against the pool

`POST /v1/deployment/node/heartbeat`

## Request

- Base URL: `https://api.algenta.ai`
- URL: `https://api.algenta.ai/v1/deployment/node/heartbeat`
- Auth: one of:
  - HTTP bearer
  - API key in header `X-API-Key`

## Request body

- DeploymentNodeHeartbeatRequest
  - `deployment_id` string, required
  - `node_thumbprint` string, required
  - `units` integer, required
  - `nonce` string
  - `public_key_pem` string
  - `signature` string

## Response `200`

Successful Response

- DeploymentNodeHeartbeatResponse
  - `admitted` boolean, required
  - `granted_units` integer, required
  - `pool_units` integer, required
  - `used_units` integer, required
  - `reason` string

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/codna/apis/algenta-api.md) · [All operations](https://skmtc.dev/codna/apis/algenta-api/llms.txt) · [OpenAPI document](https://skmtc.dev/codna/apis/algenta-api/revisions/35d30f84a5df?raw)