agdr-decide

name	agdr-decide
description	Enforce Agent Decision Record (AgDR) workflow in Codex. Use when making a non-trivial technical decision such as selecting libraries/frameworks/tools, choosing implementation patterns, making architecture choices, or resolving explicit comparisons like "X vs Y". Analyze options first, document the decision in docs/agdr/AgDR-NNNN-slug.md, then implement.

AgDR Decision Gate

Follow this process before implementation whenever the decision is non-trivial.

1. Parse the Decision Topic

Extract the specific decision from the user request and restate it clearly. If ambiguous, ask one short clarifying question.

2. Gather Decision Context

Collect only context that influences the decision:

• Problem to solve
• Constraints (performance, cost, timeline, team familiarity, platform)
• Relevant current codebase state

Keep context concise (2-5 bullets).

3. Compare Real Options

Compare 2-4 realistic options in a table:

Option	Pros	Cons
Option A	...	...
Option B	...	...

Avoid strawman options.

4. Make the Decision

Pick one option and justify with a clear because clause. Acknowledge at least one tradeoff.

5. Create the AgDR File

Create docs/agdr/AgDR-{NNNN}-{slug}.md with zero-padded IDs.

Determine {NNNN} by scanning existing files:

mkdir -p docs/agdr
last="$(find docs/agdr -maxdepth 1 -name 'AgDR-*.md' 2>/dev/null | sed -E 's|.*AgDR-([0-9]+)-.*|\1|' | sort -n | tail -1)"
if [ -z "$last" ]; then
  next="0001"
else
  next="$(printf "%04d" "$((10#$last + 1))")"
fi
echo "$next"

Use this structure:

---
id: AgDR-{NNNN}
timestamp: {YYYY-MM-DDTHH:MM:SSZ}
agent: codex
model: {model-id}
session: {session-id-if-available}
trigger: {user-prompt | hook | automation | self-initiated}
status: {proposed | executed | superseded}
---

# {Short descriptive title}

> In the context of {situation}, facing {concern}, I decided {decision} to achieve {goal}, accepting {tradeoff}.

## Context
- ...
- ...

## Options Considered
| Option | Pros | Cons |
|--------|------|------|
| ... | ... | ... |

## Decision
Chosen: **{option}**, because {justification}.

## Consequences
- ...
- ...
- ...

## Artifacts
- {PR/commit/issue links if available}

Build a lowercase hyphenated slug from the title and keep it short.

6. Continue Implementation

After writing the AgDR, continue with the chosen implementation path.

Rules

1. Always document non-trivial technical decisions before implementation.
2. Require at least 2 real options.
3. Require the Y-statement.
4. Keep context minimal and decision-focused.
5. Skip AgDR only for trivial choices or strict existing project conventions.