gsd-spike

<codex_skill_adapter>

A. Skill Invocation

• This skill is invoked by mentioning $gsd-spike.
• Treat all user text after $gsd-spike as {{GSD_ARGS}}.
• If no arguments are present, treat {{GSD_ARGS}} as empty.

B. AskUserQuestion → request_user_input Mapping

GSD workflows use AskUserQuestion (Claude Code syntax). Translate to Codex request_user_input:

Parameter mapping:

• header → header
• question → question
• Options formatted as "Label" — description → {label: "Label", description: "description"}
• Generate id from header: lowercase, replace spaces with underscores

Batched calls:

• AskUserQuestion([q1, q2]) → single request_user_input with multiple entries in questions[]

Multi-select workaround:

• Codex has no multiSelect. Use sequential single-selects, or present a numbered freeform list asking the user to enter comma-separated numbers.

Execute mode fallback:

• When request_user_input is rejected or unavailable, you MUST stop and present the questions as a plain-text numbered list, then wait for the user's reply. Do NOT pick a default and continue (#3018).
• You may only proceed without a user answer when one of these is true: (a) the invocation included an explicit non-interactive flag (--auto or --all), (b) the user has explicitly approved a specific default for this question, or (c) the workflow's documented contract says defaults are safe (e.g. autonomous lifecycle paths).
• Do NOT write workflow artifacts (CONTEXT.md, DISCUSSION-LOG.md, PLAN.md, checkpoint files) until the user has answered the plain-text questions or one of (a)-(c) above applies. Surfacing the questions and waiting is the correct response — silently defaulting and writing artifacts is the #3018 failure mode.

C. Task() → spawn_agent Mapping

GSD workflows use Task(...) (Claude Code syntax). Translate to Codex collaboration tools:

Direct mapping:

• Task(subagent_type="X", prompt="Y") → spawn_agent(agent_type="X", message="Y")
• Task(model="...") → omit. spawn_agent has no inline model parameter; GSD embeds the resolved per-agent model directly into each agent's .toml at install time so model_overrides from .planning/config.json and ~/.gsd/defaults.json are honored automatically by Codex's agent router.
• Resolved reasoning_effort="low|medium|high|xhigh" (xhigh is a GSD/Codex tier, not a generic runtime enum) → pass reasoning_effort to spawn_agent when the runtime/tool supports it. Omit missing, empty, inherited, or unsupported values; do not invent one-off effort literals in workflow prose.
• fork_context: false by default — GSD agents load their own context via <files_to_read> blocks
• Task(isolation="worktree") / Agent(isolation="worktree") → no direct Codex mapping. Codex spawn_agent does not create or bind a git worktree automatically. Workflows that require this isolation must fail closed or use an explicit manual worktree protocol before spawning (#3360).

Spawn restriction:

• Codex restricts spawn_agent to cases where the user has explicitly requested sub-agents. When automatic spawning is not permitted, do the work inline in the current agent rather than attempting to force a spawn.

Parallel fan-out:

• Spawn multiple agents → collect agent IDs → wait(ids) for all to complete

Result parsing:

• Look for structured markers in agent output: CHECKPOINT, PLAN COMPLETE, SUMMARY, etc.
• close_agent(id) after collecting results from each agent </codex_skill_adapter>

<objective> Spike an idea through experiential exploration — build focused experiments to feel the pieces of a future app, validate feasibility, and produce verified knowledge for the real build. Spikes live in `.planning/spikes/` and integrate with GSD commit patterns, state tracking, and handoff workflows.

Two modes:

• Idea mode (default) — describe an idea to spike
• Frontier mode (no argument or "frontier") — analyzes existing spike landscape and proposes integration and frontier spikes

Does not require prior new-project setup — auto-creates .planning/spikes/ if needed. </objective>

<execution_context> @/home/nnex/dev/prj/git-stacks/.codex/get-shit-done/workflows/spike.md @/home/nnex/dev/prj/git-stacks/.codex/get-shit-done/workflows/spike-wrap-up.md @/home/nnex/dev/prj/git-stacks/.codex/get-shit-done/references/ui-brand.md </execution_context>

<runtime_note> Copilot (VS Code): Use vscode_askquestions wherever this workflow calls AskUserQuestion. </runtime_note>

<context> Idea: {{GSD_ARGS}}

Available flags:

• --quick — Skip decomposition/alignment, jump straight to building. Use when you already know what to spike.
• --text — Use plain-text numbered lists instead of AskUserQuestion (for non-the agent runtimes).
• --wrap-up — Package spike findings into a persistent project skill for future build conversations. Runs the spike-wrap-up workflow. </context>

<process> Parse the first token of {{GSD_ARGS}}: - If it is `--wrap-up`: strip the flag, execute the spike-wrap-up workflow - Otherwise: pass all of {{GSD_ARGS}} as the idea to the spike workflow end-to-end.

Preserve all workflow gates (prior spike check, decomposition, research, risk ordering, observability assessment, verification, MANIFEST updates, commit patterns). </process>