--- name: Happier Session Control slug: happier-session-control category: AI Engineering description: Happier Session Control manages Happier sessions and execution runs through the CLI JSON contract. Use it to list, inspect, send messages, wait, stop, and spawn independent diagnosis sessions with explicit options. github: "https://github.com/happier-dev/happier/tree/dev/skills/happier-session-control" language: TypeScript stars: 1489 forks: 131 install: "npx degit https://github.com/happier-dev/happier/tree/dev/skills/happier-session-control ~/.claude/skills/happier-session-control" installs_to: ~/.claude/skills/happier-session-control source_path: skills/happier-session-control/SKILL.md collection_size: 24 category_size: 2451 collection_url: "https://dirskills.com/collections/happier-dev/happier" added: 2026-08-19T07:27:05.030Z last_synced: 2026-08-19T07:27:05.030Z canonical_url: "https://dirskills.com/skills/happier-session-control" --- # Happier Session Control Happier Session Control manages Happier sessions and execution runs through the CLI JSON contract. Use it to list, inspect, send messages, wait, stop, and spawn independent diagnosis sessions with explicit options. **Install:** ```bash npx degit https://github.com/happier-dev/happier/tree/dev/skills/happier-session-control ~/.claude/skills/happier-session-control ``` ## README # Happier Session Control (CLI JSON) This skill enables an agent framework (for example OpenClaw) to control Happier sessions using the **existing** `happier` CLI in `--json` mode. ## Prerequisites - The `happier` CLI is installed and authenticated. - If using multiple servers/profiles, pass server selection flags **before** `session` (prefix-only): - `happier --server session list --json` - `happier --server-url --webapp-url session list --json` ## Contract All JSON outputs are a pure-stdout envelope: ```json { "v": 1, "ok": true, "kind": "...", "data": {} } ``` or: ```json { "v": 1, "ok": false, "kind": "...", "error": { "code": "..." } } ``` Common error codes to handle: - `not_authenticated`: run `happier auth login` on the host (or mount/provide a valid `HAPPIER_HOME_DIR`). - `session_id_ambiguous`: pick deterministically from `error.candidates` (prefer exact id; otherwise ask the user). - `session_not_found`: call `happier session list --json` and retry. - `unsupported`: feature disabled by server policy or backend doesn’t support the requested intent. ## Independent session delegation Use an independent Happier session only when the user asks for new sessions or when an invoking workflow explicitly selects that topology. Native subagents remain the owner for in-session delegation. When an independent session owns a complete work bundle: - create it with a self-contained `initialMessage`, descriptive `title` and `tag`, the intended repository `path`, and only user-selected or safely resolved machine/profile/backend/model options; - use canonical `read-only` permission mode for diagnosis when the selected backend supports it, plus an explicit no-write constraint in the brief. Permission modes are backend-applied policy, not a universal security sandbox; do not overclaim enforcement; - treat a successful accepted spawn as the triage lane's completion for that bundle; - return the new session id/title and allocation to the user, then stop by default; - let the spawned session present its diagnosis directly to the user; - do not wait for idle or pull its transcript merely to re-present the same result; - do not instruct the spawned session to create further independent sessions unless the user explicitly requested recursive orchestration. Use monitoring only when the user asks the parent to supervise, consolidate, or continue after the child. In that case, `session.wait.idle`, `session.transcript.get`, and `session.message.send` are optional follow-up tools, not part of the default spawn flow. The Happier MCP action ids are: - `session.spawn_new` — accepts `initialMessage`, `title`, `tag`, `path`, `machineId`, `profileId`, backend/model selection, and `permissionMode`; - `session.wait.idle` — optional monitoring; - `session.transcript.get` — optional transcript retrieval; - `session.message.send` — optional follow-up or correction. The MCP binding names are `session_spawn_new`, `session_wait_idle`, `session_transcript_get`, and `session_message_send`. When actions are unavailable, use the corresponding CLI JSON commands below where the needed options are supported, or report the missing capability instead of silently changing topology. ## Auth Commands (JSON) Check auth status without scraping human output: ```bash happier auth status --json ``` ## Session Commands List sessions: ```bash happier session list --json ``` Inspect session status (server snapshot): ```bash happier session status --json ``` Inspect session status with a best-effort live refresh: ```bash happier session status --live --json ``` Create/load a session by tag: ```bash happier session create --tag --json ``` Send a message to a session: ```bash happier session send "" --json ``` Send a message and wait until the session is idle: ```bash happier session send "" --wait --timeout 300 --json ``` Wait for a session to become idle: ```bash happier session wait --timeout 300 --json ``` Stop a session: ```bash happier session stop --json ``` Read session history (compact is recommended for prompt stuffing): ```bash happier session history --limit 50 --format compact --json ``` ## Execution Run Commands Start an execution run: ```bash happier session run start --intent review --backend claude --json ``` List runs for a session: ```bash happier session run list --json ``` Get a run: ```bash happier session run get --include-structured --json ``` Send input to a run: ```bash happier session run send "" --json ``` Stop a run: ```bash happier session run stop --json ``` Execute an action on a run: ```bash happier session run action --input-json '' --json ``` Wait for a run to finish: ```bash happier session run wait --timeout 300 --json ``` Stream turn IO for a streaming run (e.g. `intent=voice_agent`): ```bash happier session run stream-start "" --json happier session run stream-read --cursor 0 --json happier session run stream-cancel --json ``` ## Server Commands (JSON) List server profiles: ```bash happier server list --json ``` Current active server: ```bash happier server current --json ``` Add a server profile non-interactively: ```bash happier server add --name "My Server" --server-url https://example.com --webapp-url https://example.com --use --json ``` Switch active server: ```bash happier server use --json ``` Remove a server profile: ```bash happier server remove --force --json ``` Probe server reachability/version: ```bash happier server test [] --json ``` Set a one-off custom server as active: ```bash happier server set --server-url https://example.com --webapp-url https://example.com --json ```