Create join

Joins every public channel in the caller org's workspace.

POST /v1/provider/slack/join

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Address	`https://api.hanzo.ai/v1/provider/slack/join`
Method	`POST`
Operation	`post_provider_slack_join`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Joins every public channel in the caller org's workspace.

Org admin, because it changes what the whole workspace sees: after it the agent is a member of every public room and answers in all of them.

Request

The document declares no body for POST /v1/provider/slack/join. The handler is typed in cloud but its shape is not yet emitted, so the fields are not listed here — ask MCP's describe for post_provider_slack_join, which answers from the running route.

Response

Status	Body	Meaning
`200`	provider.slackJoinOut	ok
`default`	problem-details	refused

200 body — 7 fields.

Field	In	Type	Always	Description
`already`	body	integer (int64)	—	Already counts the channels it was a member of before, kept apart from Joined because only one of the two is a change.
`failed`	body	provider.joinFailure[]	—	Failed is per-channel, so one refusal does not hide the rest of the walk.
`failed[].channel`	body	string	—	Channel is Slack's id for the room that refused.
`failed[].error`	body	string	—	Error is Slack's own code, carried through unchanged.
`failed[].name`	body	string	—	Name is that room's human name, so the operator does not have to look the id up.
`joined`	body	string[]	—	Joined names the channels this run walked into — the change it made.
`listed`	body	integer (int64)	—	Listed is every public, unarchived channel the workspace has.

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo provider slack join

.ts

.py

.go

.rs

.java

import { Configuration, ProviderApi } from 'hanzoai';

const api = new ProviderApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postProviderSlackJoin();

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

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = ProviderApi(client).post_provider_slack_join()

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

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

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

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

let result = provider_api::post_provider_slack_join(&cfg, Default::default()).await?;

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

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

var result = new ProviderApi(client).postProviderSlackJoin();

curl -X POST https://api.hanzo.ai/v1/provider/slack/join \
  -H "Authorization: Bearer $HANZO_API_KEY"

MCP reaches provider through the provider 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_connections"
         }
       }
     }'

Provider API · All Hanzo APIs · Interactive reference

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