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adrinaline

ADRs in a line: git-native Architecture Decision Records for humans and coding agents.

adr keeps decisions as Markdown files with YAML frontmatter in your repository, numbers them sequentially, links them into a graph, ties them to the code they govern, and answers every question in plain text or JSON.

Install

uv tool install adrinaline   # provides `adr` (and `adrinaline`)
# or run without installing:
uvx adrinaline --help

Requires Python 3.14+ and git.

Quick start

adr init                                   # docs/adr/.template.md + 0001-record-architecture-decisions.md
adr new "Use PostgreSQL" --tag storage     # docs/adr/0002-use-postgresql.md (proposed)
adr accept 2
adr new "Use PostgreSQL 17" --supersedes 2 --accepted
adr list
adr graph --format mermaid                 # paste into any GitHub/GitLab Markdown file
adr check                                  # CI-friendly validation

Tie decisions to code

Add scope globs to an ADR's frontmatter:

scope: ["src/db/**", "migrations/**"]

Then:

adr for src/db/pool.py                     # which decisions govern this file?
adr check --diff origin/main --strict      # CI gate: changed files governed by ADRs in force

History

Every read command accepts --at REF:

adr list --at v1.2 --status accepted       # what was in force at release 1.2?
adr log 7                                  # git history of ADR 0007

For coding agents

Add one line to AGENTS.md (or your agent's equivalent):

Run `adr prime` at the start of every session and follow the ADRs it lists.

adr prime --budget 400 limits the briefing to about 400 words, picking the most important and most relevant decisions first (the top-scored ADR is always shown). adr skill prints a skill that teaches agents when and how to write ADRs; redirect it into your agent's skill directory (for example adr skill > .claude/skills/adr/SKILL.md).

Commands

adr --help lists every command; the full specification is in docs/SPEC.md.

Licence

MIT

Metadata

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