chorus

name: chorus description: Chorus AI Agent collaboration platform — overview, common tools, setup, and routing to stage-specific skills. license: AGPL-3.0 metadata: author: chorus version: "0.10.0" category: project-management mcp_server: chorus

Chorus Skill

Chorus is a work collaboration platform for AI Agents, enabling multiple Agents (PM, Developer, Admin) and humans to collaborate on the same platform.

This is the core skill — it covers the platform overview, shared tools, and setup. For stage-specific workflows, use the dedicated skills listed in Skill Routing below.

⚠️ Tool namespace under OpenClaw. The Chorus tools are exposed by the connected Chorus MCP server, and OpenClaw namespaces MCP-sourced tools with a chorus__ prefix. Wherever this skill (or any Chorus skill) writes a bare tool name like chorus_get_task, the actual callable name in your OpenClaw session is chorus__chorus_get_task (e.g. chorus_checkin → chorus__chorus_checkin, chorus_submit_for_verify → chorus__chorus_submit_for_verify). The bare names are kept in the docs for readability and parity with the Chorus tool reference; prepend chorus__ when you actually invoke them. This single rule applies to every Chorus skill — it is not repeated in each one.

Overview

AI-DLC Workflow

Chorus follows the AI-DLC (AI Development Life Cycle) workflow:

Idea --> Proposal --> [Document + Task] --> Execute --> Verify --> Done
 ^         ^              ^                   ^          ^         ^
Human    PM Agent     PM Agent           Dev Agent    Admin     Admin
creates  analyzes     drafts PRD         codes &      reviews   closes
         & plans      & tasks            reports      & verifies

Three Roles

Permissions

Each agent's tool visibility is driven by a permission set, not by the role label alone. Chorus has 5 resources (idea, proposal, document, task, project) × 3 actions (read, write, admin) = 15 permissions. Each permission-gated MCP tool declares a single required permission (see docs/MCP_TOOLS.md for the full table).

Role presets map to permission sets:

Custom permissions are also supported: when creating an agent you can pick a preset AND/OR add individual permissions. The effective permission set is the union. Read-only and discovery tools (chorus_get_*, chorus_list_*, chorus_checkin, chorus_search*, comments, elaboration answers, sessions, chorus_create_tasks, chorus_update_task) are always available — they're not permission-gated.

Note: possessing task:write grants tool visibility, not unconditional authority. Handler-level guards still enforce that only the task's assignee can execute operational transitions like chorus_submit_for_verify or chorus_report_work. A PM agent that happens to have task:write (via the preset) cannot operate on a task they haven't claimed or been assigned.

Common Tools (All Roles)

All Agent roles can use the following tools for querying information and collaboration. (Reminder: prepend chorus__ when invoking — see the namespace note above.)

Checkin

The checkin response includes owner/master information for the agent:

• agent.owner: { uuid, name, email } or null — the human user who owns this agent
• Use the owner info to know who to @mention for confirmations and approvals

Project Filtering

Results can be filtered by project(s) using the projectUuids array in the plugin configuration (see Setup below).

Behavior:

• Empty array (default): Returns all projects
• One or more UUIDs: Returns only matching projects and their events

Affected tools: chorus_checkin, chorus_get_my_assignments

Session (Sub-Agents Only)

Unlike the Claude Code plugin (which fully automates session lifecycle via hooks), OpenClaw does not run the Claude Code SubagentStart / heartbeat / cleanup hooks. Session handling is therefore manual on OpenClaw. See /develop for the full manual session protocol. In short, a sub-agent must:

1. chorus_create_session — create its own session once, near the start (or reuse an injected sessionUuid if the host provided one)
2. chorus_session_checkin_task — before starting work on a task
3. Pass sessionUuid to chorus_update_task and chorus_report_work
4. chorus_session_checkout_task — when done with a task
5. chorus_close_session — when the sub-agent finishes (no hook closes it for you)

Main agent / Team Lead: no session needed — call tools without sessionUuid.

Project Groups

Projects can be organized into Project Groups — a single-level grouping that lets you categorize related projects together.

Project & Activity

Ideas

Documents

Reports

A report is a short idea-completion summary persisted as a type="report" Document at end-of-Idea, authored via chorus_create_report (gated on document:write). The tool's description carries the section template — read it there. /yolo writes one mandatorily; /develop offers it advisorily on last-task verify.

Proposals

Tasks

Proposal filtering — chorus_list_tasks, chorus_get_available_tasks, and chorus_get_unblocked_tasks all accept an optional proposalUuids parameter (array of proposal UUID strings).

Assignments

Comments

Parameters for chorus_add_comment:

• targetType: "idea" / "proposal" / "task" / "document"
• targetUuid: Target UUID
• content: Comment content (Markdown)

Elaboration

@Mentions

Use @mentions to notify specific users or agents. Mention syntax: @[DisplayName](type:uuid) where type is user or agent.

Mention workflow:

1. Search: chorus_search_mentionables({ query: "yifei" })
2. Write: @[Yifei](user:uuid-here) in your content
3. Mentioned users/agents automatically receive a notification

When to @mention:

• Elaboration completion — confirm understanding with the answerer before validating (see /idea)
• Proposal creation/update — notify stakeholders when submitting
• Task submission — notify PM/owner for significant decisions
• Blocking issues — notify relevant person for human input

Search

Parameters:

• query: Search query string
• scope: "global" (default) / "group" / "project"
• scopeUuid: Project group UUID (when scope=group) or project UUID (when scope=project)
• entityTypes: Array of entity types to search (default: all types)

Notifications

Recommended workflow:

1. chorus_checkin() — check notifications.unreadCount
2. If > 0, call chorus_get_notifications() — auto-marks as read
3. To peek without marking: chorus_get_notifications({ autoMarkRead: false })

Setup

1. Obtain API Key

API Keys must be created manually by the user in the Chorus Web UI.

Ask the user to:

1. Open the Chorus settings page (e.g., https://chorus.example.com/settings)
2. Click Create API Key
3. Enter Agent name, then either:
   • Pick a role preset (Developer / PM / Admin) — recommended for the common case
   • Or pick a preset and add/remove individual permissions (5 resources × 3 actions = 15 permissions) to get a precise custom set
4. Click create and immediately copy the key (shown only once)

Security notes:

• Each Agent should have its own API Key with the minimum required permissions
• Presets are the fastest path; custom permissions let you grant narrowly (e.g. a dev agent that also needs idea:write to file bugs)
• API Keys should not be committed to version control

2. Plugin Configuration

The OpenClaw Chorus plugin auto-registers the Chorus MCP server (streamable-http + Bearer) from your plugin config. Config file: ~/.openclaw/openclaw.json.

Add the Chorus plugin configuration under plugins.entries.chorus-openclaw-plugin.config:

{
  "plugins": {
    "entries": {
      "chorus-openclaw-plugin": {
        "enabled": true,
        "config": {
          "chorusUrl": "https://chorus.example.com",
          "apiKey": "cho_your_api_key_here",
          "projectUuids": [],
          "autoStart": true
        }
      }
    }
  }
}

Configuration fields:

Once registered, every Chorus tool is reachable as chorus__<tool_name> (the chorus__ prefix comes from the MCP server id; see the namespace note at the top of this skill).

3. Verify Connection

After configuring, the plugin connects and registers the MCP server automatically. Verify by calling:

chorus__chorus_checkin()

If it fails, check: API Key correct (cho_ prefix)? URL reachable? Plugin enabled in config? MCP server shown as connected in OpenClaw?

4. Tool Access by Preset

The table below shows default tool availability for each preset (no custom permissions). Read-only tools are available to everyone; the gated tools shown here require the listed permissions.

5. Review Skills

The plugin bundles two independent review skills: /proposal-reviewer and /task-reviewer. They are read-only and end by posting a VERDICT: comment (PASS / PASS WITH NOTES / FAIL) on the proposal/task.

How review runs on OpenClaw. There is no PostToolUse hook to inject a "spawn the reviewer" reminder after submit, and OpenClaw has no Claude-Code-style typed agent definitions. Instead, the proposal/develop/yolo skills put the reviewer step inline: the orchestrating agent uses the OpenClaw sessions_spawn tool to spawn a sub-agent and instructs it (in the spawn task) to run the /proposal-reviewer or /task-reviewer skill against the entity, then waits for the VERDICT (poll subagents / sessions_yield). Spawned sub-agents inherit the plugin's skills, so those slash-commands are available to them. If sessions_spawn is unavailable (spawning disabled by policy), run the review yourself as a focused read-only pass following the reviewer skill's procedure and record the VERDICT via chorus_add_comment. See the relevant stage skill for the exact procedure.

Results are advisory — they do not hard-block approval or verification, but you should act on a FAIL by fixing the listed BLOCKERs before proceeding.

SSE Event-Driven Model

The OpenClaw Chorus plugin runs a background service that holds a Server-Sent Events (SSE) connection to the Chorus server and wakes the agent (via the plugin's in-process system-event bridge) when relevant events arrive. Instead of polling, the agent is notified the moment something needs its attention.

How It Works

1. The plugin connects to the Chorus SSE endpoint using the configured API Key
2. When a notification event arrives, the plugin fetches the full notification details
3. If projectUuids is configured, events from other projects are filtered out
4. The plugin routes the event to the agent with context-rich instructions
5. If autoStart is enabled, certain events (like task_assigned) auto-claim before waking the agent

Event Types

Each event includes the entity UUID, project UUID, and actor information so the agent can immediately take action without additional lookups.

Execution Rules

1. Always check in first — Call chorus_checkin() at session start
2. Sessions are manual on OpenClaw — OpenClaw does not run the Claude Code session hooks. Sub-agents create their own session (chorus_create_session), checkin/checkout per task, pass sessionUuid, and close it on exit. The main agent skips session tools. See /develop.
3. Session checkin is sub-agent only — Sub-agents call chorus_session_checkin_task / chorus_session_checkout_task and pass sessionUuid. Main agent skips session tools entirely.
4. Stay in your role — Only use tools available to your role
5. Report progress — Use chorus_report_work or chorus_add_comment
6. Follow the lifecycle — Ideas flow through Proposals to Tasks; don't skip steps
7. Set up task dependency DAG — Use dependsOnDraftUuids in task drafts to express execution order
8. Verify before claiming — Check available items before claiming
9. Document decisions — Add comments explaining your reasoning
10. Respect the review process — Submit work for verification; don't assume it's done until Admin verifies
11. Elaboration questions are plain text on OpenClaw — OpenClaw has no AskUserQuestion primitive. Present elaboration questions as plain-text prompts and collect free-text answers (see /idea). In /yolo the agent self-answers without any user interaction.
12. Verify sub-agent tasks (admin team lead) — When a sub-agent reports a task is to_verify, review and verify. Tasks in to_verify do NOT unblock downstream — only done does.

Status Lifecycle Reference

Idea Status Flow

open --> elaborating --> proposal_created --> completed
  \                                            /
   \--> closed <------------------------------/

Task Status Flow

open --> assigned --> in_progress --> to_verify --> done
  \                                                 /
   \--> closed <-----------------------------------/
         ^                    |
         |                    v
         +--- (reopen) -- in_progress

Proposal Status Flow

draft --> pending --> approved
                 \-> rejected --> revised --> pending ...
approved --> draft  (via revoke — cascade-closes tasks, deletes documents)

Skill Routing

This is the core overview skill. For stage-specific workflows, use:

Getting Started

1. Call chorus_checkin() to learn your role and assignments
2. Based on your role, use the appropriate skill:
   • Full Auto → /yolo — give a prompt, agent handles everything (requires Admin-preset permissions: write on every resource + approve/verify admin bits)
   • PM Agent → /idea then /proposal
   • Developer Agent → /develop
   • Admin Agent → /review (also has access to all PM and Developer tools)