Codex compatibility note:

Invoke $skill-name: load the registered .agents/skills/<name>/SKILL.md and execute it with Codex tools; no separate Skill tool or Claude mode switch is needed. Author .claude/**; mirrors are generated.

Track steps before execution and keep progress/evidence current. Explicit skill requests execute their protocol. Use the native question tool for required questions.

Map foreign tool names to available host capabilities. A name mismatch needs no approval; an actually unavailable required capability stops with its step/evidence and a user question before adaptation.

Subagent authorization: when a skill is user-invoked or AI-detected and its protocol requires subagents, that skill activation authorizes use of the required spawn_agent subagent(s) for that task.

Preserve protocol order unless the user approves a deviation. Workflows use $start-workflow: gates stay fixed; other steps may flex with logged reasons and evidence.

Workflow Calls and Todo Bootstrap

Read the registry → workflows.workflow-spec-sync together with this skill. Call $start-workflow workflow-spec-sync to resolve the selected mode, pre-actions and fingerprint.

Todo FIRST: before triage, analysis or step execution, create one todo per phase of the selected mode, in order, listing every occurrence of that phase as a line, including conditional/optional ones (a mode that declares no phases gets one todo per occurrence); preserve occurrence IDs, roles and barrier groups. Use native todo tools or an equivalent persistent ledger. Then mark the first todo in_progress; close each step line with its run or skip evidence, and complete a phase todo only when every line is closed and its applicable exit gates hold. Mode selection and registry loading prepare tracking; any 'first action' below means the first substantive action after this bootstrap.

Call each step skill: read its linked SKILL.md and execute its protocol through the active host with the registry args. Reading or naming a skill alone is not execution. Required gates and core/optional flex follow the linked start-workflow Step Execution Protocol; keep this skill's quality gates, loops and evidence requirements.

Conditions: load each occurrence's registry applicability.when and skipReason verbatim, and record its run/skip evidence through the linked start-workflow protocol. Do not silently omit a todo or turn a conditional skill into an unconditional call; close, in one batch at triage, the todos whose condition is already false there. Declared parallel groups retain their all-return barrier.

Explicit step-skill calls by mode (registry order; roles and conditions remain owned by the registry):