Create deployments — POST /v1/projects/{slug}/deployments

POST /v1/projects/{slug}/deployments

Opens a deployment and hands back a short-lived, prefix-scoped grant to write its bytes straight to object storage. Answers 202.

This is the path for a site too large to send as one archive: a real export is hundreds of megabytes against a 16 MiB body limit, so the bytes deliberately do NOT pass through the API. The answer carries bucket, prefix and upload — a presigned POST policy that S3 itself confines to this site's prefix (starts-with <org>/<slug>/), expires in 30 minutes and bounds each object. So a build writes its own files and holds no standing bucket credential; there is nothing to rotate and nothing that leaks between tenants. Never guess the prefix — it is server-derived, and a guessed one lands where nothing is served.

The deployment is queued until POST .../deployments/{id}/complete flips it live (or error). That completion is also where DELETION happens: the grant authorizes writes only, so a build cannot remove a file, and cloud reconciles the prefix against the keys manifest the completion carries. A build that dies before completing leaves the deployment queued rather than a half-live site.

The grant is on the 202 and NOWHERE else — it is never stored and never replayed on a later read, so it cannot outlive the build it was minted for. A deployment whose grant could not be minted is still created and still completable; it simply carries no upload, and a caller with no other way to write should treat that as the failure it is.

Billing: the deployment is free. The one gate is storage, and it runs BEFORE anything is created: an org past the free storage tier that cannot pay a month of what it holds is 402, and 503 when commerce is unreachable. What the build uploads is billed as storage from the hourly sweep that finds it, never as a deploy.

Scope: a validated principal is required (401 without one) and the site is resolved within that principal's org, so another tenant's slug is a 404.

Request

3 fields, body application/json (required).

Response

202 body — 22 fields.

Failure carries the platform error shape — see Errors.

Examples

hanzo projects deployments create <slug>

import { Configuration, ProjectApi } from 'hanzoai';

const api = new ProjectApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postProjectsBySlugDeployments({ slug: 'slug', commit: "<commit>", slug: "<slug>" });

from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import ProjectApi

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = ProjectApi(client).post_projects_by_slug_deployments(slug='slug', commit="<commit>", slug="<slug>")

cfg := hanzoai.NewConfiguration()
cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY"))
client := hanzoai.NewAPIClient(cfg)

resp, _, err := client.ProjectAPI.PostProjectsBySlugDeployments(context.Background()).Execute()
if err != nil {
	return err
}

use hanzo_client::apis::{configuration::Configuration, project_api};

let mut cfg = Configuration::new();
cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok();

let result = project_api::post_projects_by_slug_deployments(&cfg, Default::default()).await?;

import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.ProjectApi;

ApiClient client = new ApiClient();
client.setBearerToken(System.getenv("HANZO_API_KEY"));

var result = new ProjectApi(client).postProjectsBySlugDeployments();

curl -X POST https://api.hanzo.ai/v1/projects/<slug>/deployments \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "commit": "<commit>",
       "slug": "<slug>"
     }'

curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "project",
         "arguments": {
           "op": "post_projects_by_slug_deployments",
           "input": {
             "slug": "<slug>",
             "commit": "<commit>"
           }
         }
       }
     }'

Project API · All Hanzo APIs · Interactive reference