docs/ is Truthmark's canonical repository documentation tree. It keeps repository-wide agent rules, reusable standards, current architecture, and current truth docs separate from onboarding copy and historical planning notes.

AGENTS.md is the agent entry point, but it delegates repository-wide rules to docs/ai/repo-rules.md. README.md remains the human onboarding and product entry point. .truthmark/config.yml defines the committed hierarchy contract.

Scope

This doc defines the current structure, navigation map, and maintenance expectations of Truthmark's canonical docs/ tree.

Authority Source

Repository-wide conflict order and completion policy live in docs/ai/repo-rules.md. Use this index for navigation and document-class guidance; it does not restate the full authority hierarchy.

README.md may help with onboarding and positioning, but it must not override current-state docs or repository-wide agent rules.

Audience Split

Agent-centric docs

docs/ai/ for repository rules and agent onboarding
docs/truthmark/ for routing metadata
docs/standards/ for reusable constraints and completion rules
docs/architecture/ for current system structure
docs/truth/ for current behavior and invariants
docs/templates/ for editable scaffold templates used to create new docs
docs/truth/contracts.md for stable contracts the CLI exposes

Human-centric docs

README.md for onboarding and positioning

Directory Map

Path	Type	Primary audience	Purpose
`docs/ai/`	agent rules	agent	Repository-wide rules and fast onboarding
`docs/truthmark/`	routing	both	Truth-routing metadata such as `areas.md` and `areas/*/.md`
`docs/standards/`	standard	agent	Reusable constraints, verification rules, completion gates
`docs/architecture/`	architecture	agent	Current structure and module boundaries
`docs/truth/`	truth	agent	Current behavior for init, check, contracts, and installed workflows
`docs/templates/`	template	both	Editable templates for scaffolded docs; templates are not Truth Sync targets

Frontmatter Policy

Canonical docs should include frontmatter and keep these fields current:

status
doc_type
last_reviewed
source_of_truth

Update Rules

When repository-wide agent policy changes, update docs/ai/repo-rules.md.
When code-to-doc routing changes, update docs/truthmark/areas.md in the same change.
When package versions or release/version policy change, apply docs/standards/versioning.md before accepting the version.
When PR or release source text is needed, write a changes/ note using docs/standards/change-notes.md.
When truthmark init or scaffolded files change, update the relevant truth or architecture doc, not only README.md.
When truthmark check changes what it validates or how it reports diagnostics, update both the current truth doc and the contract doc.
When major product, onboarding, install, command, positioning, or workflow behavior changes, review the root README.md and update it if the human entry point would otherwise be stale.
Keep planning or proposal material outside the canonical current-state docs until it becomes implemented truth.
When current behavior changes for architecture, contracts, or truth docs, update the owning canonical doc's Product Decisions and Rationale sections in the same change.
Do not keep parallel documentation trees for the same subject.

Important Truthmark-Specific Caveat

New repositories should run truthmark config before truthmark init so teams can review the committed hierarchy contract before workflow surfaces are installed. The current scaffold writes a root route index plus one child route file under the configured routing root.

Maintenance Principle

The canonical tree should stay small, explicit, and current. Historical notes are useful for traceability, but current behavior belongs in the nearest maintained document class, not in old plans or chat summaries.

Product Decisions

Decision (2026-05-15): The docs index owns navigation and document-class guidance for the canonical tree, while docs/ai/repo-rules.md owns repository-wide authority order and completion policy.

Rationale

Keeping the docs index focused on navigation avoids loading duplicated authority prose while still giving agents and maintainers one stable place to resolve where current truth should live before they edit deeper canonical docs.

README.md

Truthmark Docs Index

Purpose