Promotes a build output into a new immutable release WITHOUT serving it — the…

POST /v1/projects/{slug}/releases

Promotes a build output into a new immutable release WITHOUT serving it — the staged half of publishing, for when you want to check a release before it goes live. Answers 201.

source is a path RELATIVE to your org's own storage space: the org segment is prepended server-side from the validated principal and the bucket is never in the request at all, so a server-side copy can only ever reach bytes your org already owns. The prefix is listed, content-addressed (SHA-256 over the sorted manifest of key/size/etag), and copied into an immutable <org>/.releases/<slug>/<id>/ prefix; the row is written LAST, so a partial copy is unreachable rather than merely unlikely. Re-publishing an unchanged source is idempotent BY CONSTRUCTION — same bytes, same id, no copy at all.

The source must contain index.html at its root and stay under the same file and byte caps an artifact deploy does (413 past them); a source that changes mid-copy is a 409 and the release is abandoned. Each publish also reclaims releases past the retention depth, so a site's release space stays bounded. This is the billable half — the hosting gate runs before any copy, and the debit lands once the release exists.

Scope: a validated principal is required (403 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

201 body — 8 fields.

Failure carries the platform error shape — see Errors.

Examples

import { Configuration, ProjectsApi } from 'hanzoai';

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

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

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = ProjectsApi(client).post_projects_by_slug_releases(slug='slug', slug="<slug>", source="<source>")

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

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

use hanzo_cloud::apis::{configuration::Configuration, projects_api};

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

let result = projects_api::post_projects_by_slug_releases(&cfg, Default::default()).await?;

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

ApiClient client = new ApiClient();
client.setRequestInterceptor(b -> b.header("Authorization", "Bearer " + System.getenv("HANZO_API_KEY")));

var result = new ProjectsApi(client).postProjectsBySlugReleases();

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

curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "describe",
         "arguments": {
           "op": "list_projects"
         }
       }
     }'

Projects API · All Hanzo APIs · Interactive reference