Trellis before-dev

Discovers and injects project-specific coding guidelines from .trellis/spec/ before implementation begins. Reads spec indexes, pre-development checklists, and shared thinking guides for the target package. Use when starting a new coding task, before writing any code, switching to a different package, or needing to refresh project conventions and standards.

install

source · Clone the upstream repo

git clone https://github.com/mindfold-ai/Trellis

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/mindfold-ai/Trellis "$T" && mkdir -p ~/.claude/skills && cp -r "$T/.agents/skills/before-dev" ~/.claude/skills/mindfold-ai-trellis-before-dev && rm -rf "$T"

manifest: .agents/skills/before-dev/SKILL.md

source content

Read the relevant development guidelines before starting your task.

Execute these steps:

Discover packages and their spec layers:

python3 ./.trellis/scripts/get_context.py --mode packages

Identify which specs apply to your task based on:
- Which package you're modifying (e.g.,
```
cli/
```
  ,
```
docs-site/
```
  )
- What type of work (backend, frontend, unit-test, docs, etc.)

Read the spec index for each relevant module:

cat .trellis/spec/<package>/<layer>/index.md

Follow the "Pre-Development Checklist" section in the index.

Read the specific guideline files listed in the Pre-Development Checklist that are relevant to your task. The index is NOT the goal — it points you to the actual guideline files (e.g.,
```
error-handling.md
```
,
```
conventions.md
```
,
```
mock-strategies.md
```
). Read those files to understand the coding standards and patterns.

Always read shared guides:

cat .trellis/spec/guides/index.md

Understand the coding standards and patterns you need to follow, then proceed with your development plan.

This step is mandatory before writing any code.