Create register

Trades a pool's join secret for a runner identity and the token that authenticates every later call.

POST /v1/runner/register

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Address	`https://api.hanzo.ai/v1/runner/register`
Method	`POST`
Operation	`post_runner_register`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Trades a pool's join secret for a runner identity and the token that authenticates every later call. It is the one operation with no credential to check, because a runner has none until this answers.

The secret names the pool it opens, and a pool exists only because somebody declared it. A daemon that starts against capacity nobody declared is refused here, which is where the rule that pools are declared state actually holds.

Request

6 fields, body application/json (required).

Field	In	Type	Required	Description
`capabilities`	body	string[]	—	Capabilities are the optional protocol behaviours this runner understands, e.g. "cancelling".
`ephemeral`	body	boolean	—	Ephemeral declares that this runner takes ONE job and exits.
`labels`	body	string[]	—	Labels are what a workflow's `runs-on:` will select this runner by.
`name`	body	string	—	Name is what to call this runner.
`token`	body	string	—	Token is the REGISTRATION secret, a different secret from the runner token the reply carries.
`version`	body	string	—	Version is the runner build asking to register.

Response

Status	Body	Meaning
`200`	runner.RegisterOut	ok
`default`	problem-details	refused

200 body — 8 fields.

Field	In	Type	Always	Description
`runner`	body	runner.Identity	—
`runner.ephemeral`	body	boolean	—	Ephemeral means the runner takes ONE job and exits, so the forge must not expect it back.
`runner.id`	body	integer (int64)	—	ID is the forge's own row id for this runner.
`runner.labels`	body	string[]	—	Labels are what a workflow's `runs-on:` selects this runner by.
`runner.name`	body	string	—	Name is what a person calls this runner in the forge's UI.
`runner.token`	body	string	—	Token is the secret that authenticates that handle.
`runner.uuid`	body	string	—	UUID is the handle the runner presents on every later op.
`runner.version`	body	string	—	Version is the runner build the forge last heard from.

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo runner register

.ts

.py

.go

.rs

.java

import { Configuration, GitApi } from 'hanzoai';

const api = new GitApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postRunnerRegister({ capabilities: ["<capabilities>"], ephemeral: false });

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

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = GitApi(client).post_runner_register(capabilities=["<capabilities>"], ephemeral=False)

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

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

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

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

let result = git_api::post_runner_register(&cfg, Default::default()).await?;

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

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

var result = new GitApi(client).postRunnerRegister();

curl -X POST https://api.hanzo.ai/v1/runner/register \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "capabilities": [
         "<capabilities>"
       ],
       "ephemeral": false
     }'

MCP reaches git through the git tool, which names its 38 operations with its own verbs — this one among them, under a name only MCP declares. describe explains any of them:

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_git_keys"
         }
       }
     }'

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