Spec and Spine

openspec/ is the WHAT layer of the Butlers knowledge architecture. Use this skill to find the
normative behavior for a capability, determine whether an implementation matches that behavior,
and route follow-on spec work into the correct OpenSpec workflow.

Source of Truth

Read these in order:

1. about/README.md for pillar precedence and the "Spec and Spine" role in the traceability chain.
2. openspec/specs/<domain>/spec.md for the canonical requirement set.
3. openspec/changes/<change>/specs/<domain>/spec.md only when an active change is modifying the capability.
4. about/legends-and-lore/rfcs/*.md when the requirement's design rationale or contract source is unclear.
5. about/craft-and-care/ when deciding how the spec change must be tested, reviewed, or documented.

Archived changes are historical context, not the live source of truth.

Use This Skill For

• Finding the right capability spec before implementation or review
• Checking whether code matches the current spec
• Deciding whether a behavior change needs an OpenSpec change first
• Determining whether a delta spec in openspec/changes/ is the active authority for a capability
• Turning requirements and scenarios into implementation and test targets

Do Not Use This Skill For

• Project purpose or scope arguments: use heart-and-soul
• Wire contracts, state machines, or schema design: use legends-and-lore
• Test scope, verification bar, or documentation hygiene: use craft-and-care
• Code ownership or placement questions: use lay-and-land

Fast Routing

Use the naming pattern first; then confirm by reading the file:

If the work smells like...	Start with...
daemon, sessions, scheduler, telemetry, modules, credentials	openspec/specs/core-*/spec.md
butler identity or per-butler guarantees	openspec/specs/butler-*/spec.md
modules	openspec/specs/module-*/spec.md
connectors	openspec/specs/connector-*/spec.md
dashboard or API surfaces	openspec/specs/dashboard-*/spec.md
visual/interaction/copy language, tokens, typography, motion (Dispatch)	openspec/specs/dashboard-design-language/spec.md
memory, finance, healing, identity, cross-cutting capabilities	openspec/specs/<domain>/spec.md by keyword search

Useful repo-native lookups:

find openspec/specs -mindepth 2 -maxdepth 2 -name spec.md | sort
rg -n "<keyword>|^### Requirement:|^#### Scenario:" openspec/specs
find openspec/changes -path '*/specs/*/spec.md' | sort
rg -n "<keyword>|^### Requirement:|^#### Scenario:" openspec/changes

Grounding Workflow

1. Identify the capability domain from the task language and touched codepaths.
2. Read the canonical spec in openspec/specs/ before touching code.
3. Check openspec/changes/ for an active delta spec affecting the same domain.
4. If a delta exists, read its proposal.md, design.md, and tasks.md alongside the changed spec.
5. Extract the exact requirements and scenarios that bind the work.
6. Map those scenarios to tests, review expectations, and code changes.

Decision Rules

• Mainline specs in openspec/specs/ are canonical unless an active change is intentionally modifying them.
• Active change specs are authoritative only for the scope of that change until synced or archived.
• If code and spec disagree, do not silently treat code as truth. Check for an active change, then either fix code or update the spec explicitly.
• If a non-trivial behavior has no spec coverage, start with an OpenSpec change before implementation.
• If the spec is vague, resolve the ambiguity in the spec and scenarios rather than encoding hidden assumptions in code.
• Role specs define stable behavioral contracts; frequently changing operational values belong in roster config or runtime state, not in the role spec.

OpenSpec Workflow Hand-off

Use the existing OpenSpec workflow skills for the next step:

• openspec-explore: clarify a new capability before writing the change
• openspec-new-change: create a new change with proposal, design, tasks, and delta specs
• openspec-continue-change: continue an in-progress change
• openspec-apply-change: implement an approved change
• openspec-verify-change: verify code matches the change artifacts
• openspec-sync-specs: sync finalized delta specs into main specs
• openspec-archive-change: archive a completed change

Review and Implementation Expectations

• Quote or reference the specific requirement and scenario headings that justify the change.
• When behavior changes, update the relevant spec in the same change, not as follow-up drift.
• Convert the binding WHEN/THEN scenarios into tests or an explicit verification checklist.
• If the task crosses pillars, re-load legends-and-lore for contract rationale and craft-and-care for execution quality.