modbender subagent-spawn-command-builder
Generate sessions_spawn payload JSON from profile config.
This skill does not execute sessions_spawn; it only builds payload/command JSON.
Files
- Profile template:
state/spawn-profiles.template.json - Active profile config:
state/spawn-profiles.json - Builder script:
scripts/build_spawn_payload.mjs - Builder log:
state/build-log.jsonl
Supported sessions_spawn parameters
task(required)label(optional)agentId(optional)model(optional)thinking(optional)runTimeoutSeconds(optional)cleanup(keep|delete, optional)
Setup
cp skills/subagent-spawn-command-builder/state/spawn-profiles.template.json \
skills/subagent-spawn-command-builder/state/spawn-profiles.json
Then edit spawn-profiles.json.
Generate payload
skills/subagent-spawn-command-builder/scripts/build_spawn_payload.mjs \
--profile heartbeat \
--task "Analyze recent context and return a compact summary" \
--label heartbeat-test
The script prints JSON directly usable for sessions_spawn.
Merge/priority rule
Value resolution order is:
- CLI option (
--model,--thinking, etc.) - Profile value (
profiles.<name>.*) - Defaults value (
defaults.*)
task always comes from CLI --task.
CLI options
Note: this builder is Node.js (.mjs) based. If generated tasks include Python execution steps, write commands with python3 (not python).
--profile(required)--task(required)--label--agent-id--model--thinking--run-timeout-seconds--cleanup keep|delete