Instruction file imported from ejklock/living-docs-skill (.github/instructions/living-docs.instructions.md). Copyright stays with the author.

name: living-docs description: Run a project's documentation as a living system — docs-first issues/PRDs, MADR-lite ADRs (supersede, never delete), Behavior Decision Records (BDRs), a project constitution, research artifacts, living Mermaid architecture diagrams, and semantic-index organization where every doc lands in exactly one place and indexes never drift. Use when setting up or maintaining project docs, writing an ADR/PRD/BDR/constitution/issue/research note, defining a term or acronym in the glossary, drawing or updating an architecture/flow/sequence diagram, splitting an oversized doc into an index, or enforcing the no-drift maintenance rule. version: "0.17.0" metadata: type: skill layer: procedural tags: [documentation, adr, prd, bdr, constitution, issues, research, architecture, semantic-index]

Living Docs

Treat documentation as a living system that stays in sync with the code, not a write-once artifact that rots. The discipline has one spine — every piece of knowledge has exactly one home, that home is indexed, and nothing structural ships without its doc — and several document types that hang off it: a constitution, ADRs, BDRs, PRDs, issues, research, architecture diagrams, and a semantic context index.

This skill is stack-agnostic. It governs how docs are organized and maintained, never what technology a project uses.

Using this skill (progressive disclosure)

This SKILL.md is a slim stub — a trigger plus a task->topic router. The living-docs CLI holds the full, authoritative conventions and templates and discloses them progressively. Before authoring anything, load the topic for your task and operate from it, not from this stub:

• living-docs skill living-docs --list — discover every topic.
• living-docs skill living-docs --topic <topic> — load that topic's full rules (+ template).

Piped output is minified JSON (machine default); --plain for human text, --json to force JSON. Topics: spine, procedure, adr, prd, bdr, constitution, issue-workflow, glossary, architecture-diagrams, semantic-index, doc-language, citation, enforcement-modes, check, okf-format, doc-trail, size-targets, about (run --list for the full set).

This stub is a pure router (ADR 0017): it triggers and points at topics — it holds no rules inline. The five core invariants and the CLI-owns-the-mechanics hard rule are topics, not stub prose; load them before authoring:

Write ONLY the body below the closing ---. Frontmatter and indexes are CLI-owned: living-docs status / supersede / index. (ADR 0019)

• The five invariants (the spine) → living-docs skill living-docs --topic spine.
• Authoring mechanics — CLI owns every deterministic step, you write only the prose → living-docs skill living-docs --topic procedure.

When to invoke

• Standing up documentation for a project (creating docs/ structure, the docs index, ADR/issue/BDR/constitution directories) → living-docs skill living-docs --topic procedure.
• First time living-docs runs in a project (no ## Living Docs block in the project guide) → ask the enforcement-mode question and persist the answer → living-docs skill living-docs --topic enforcement-modes.
• Adopting living-docs in an existing/brownfield project (decisions already made but undocumented) → living-docs skill living-docs --topic procedure (Adopting living docs in an existing project): inventory the decisions, confirm each with the user before recording any ADR, never back-fill by inference alone.
• Writing or editing an ADR (an architectural/implementation decision) → living-docs skill living-docs --topic adr (load --topic procedure first if not already loaded this session).
• Writing or editing a PRD (a product/feature requirement spec) → living-docs skill living-docs --topic prd (load --topic procedure first if not already loaded this session).
• Writing or editing a BDR (observable behavior — inputs, outputs, Given/When/Then scenarios, and the Test Design matrix for how each is tested) → living-docs skill living-docs --topic bdr (load --topic procedure first if not already loaded this session). A test-strategy decision (non-default level/technique, bar deviation) is an ADR tags: [testing], not a new record type (no "TDR").
• Specifying a non-functional requirement (performance, availability, security, scale) → a quality-attribute scenario bound to an instrument in the PRD (living-docs skill living-docs --topic prd, rule 9); the decision + fitness function go in an ADR. Not a new doc type.
• Establishing or amending the constitution (foundational scope, data model, non-negotiables) → living-docs skill living-docs --topic constitution (load --topic procedure first if not already loaded this session).
• Creating or editing an issue/ticket → living-docs skill living-docs --topic issue-workflow (load --topic procedure first if not already loaded this session).
• Recording research (technology evaluation, external trade-offs) → load the research-artifacts skill. It owns the OKF research-note format (single file per note, no per-research subfolder), the source discipline, and the research → decision → issue traceable chain, and links back here for the ADR/BDR/issue artifacts. Pairs with the deep-research skill.
• Drawing or updating an architecture, data-flow, or tool-calling diagram → living-docs skill living-docs --topic architecture-diagrams.
• Defining a term or acronym the docs use → add it to the glossary (docs/context/glossary.md), one home per term → living-docs skill living-docs --topic glossary.
• A doc has grown too large or mixes concerns → split into a semantic index → living-docs skill living-docs --topic semantic-index.
• Sizing a record's body (aim ~100 lines, check advises at 120; research exempt; never trim a load-bearing rationale) → living-docs skill living-docs --topic size-targets.
• Enforcing the no-drift maintenance rule after any structural change → living-docs skill living-docs --topic enforcement-modes (refusal triggers) and living-docs skill living-docs --topic procedure (maintaining loop).
• Authoring or checking the OKF format of any doc (frontmatter type, reserved index.md/log.md, bundle-relative links, # References) → living-docs skill living-docs --topic okf-format.
• Deciding which language the docs are written in (default English; user may override at session start and pin it) → living-docs skill living-docs --topic doc-language.
• Understanding the doc trail (constitution → PRD → ADR/BDR → issues → code) or the document map (where each doc type lives) → living-docs skill living-docs --topic doc-trail.
• Understanding how this skill composes with okf-knowledge-format, research-artifacts, or optional companions, or its provenance → living-docs skill living-docs --topic about.