investigate-beads

name: investigate-beads description: Investigate a braid strand (bd-XXXX issue) in the current checkout, gather context from its dependency graph, and produce a plan-skeleton + triage verdict (ready / needs-info / blocked). Use when the user provides a strand ID (bd-XXXX) and asks to investigate, scope, or understand the work needed.

Investigate-Beads Skill

Naming note: this skill keeps the investigate-beads name (and /investigate-beads invocation) for stability, but the project now tracks work in braid — a strand is one issue in the braid skein. Commands below use braid.

Takes a braid strand from "user pointed at it" to "a plan skeleton and a triage verdict committed to the current branch." It works in whatever checkout you invoke it in and does not create or switch worktrees or branches — you choose where the work lands. It is the strand counterpart to triage (which handles GitHub issues, where no branch exists yet and one must be created).

Does not implement the fix or finalize the design. Produces enough context to start a focused design session — or to recommend that the issue isn't ready yet.

When to use

User says any of:

• "investigate bd-XXXX" / "let's look at bd-XXXX"
• "what would it take to work on bd-XXXX"
• pastes a beads ID and asks for context / scoping

Do not use for:

• Strands you've already scoped (just edit on main or an existing branch)
• GitHub-originated issues — use triage instead, which handles the GH side and files a braid strand if needed
• Strands you're about to implement immediately in the current session — braid update <id> --status in_progress and start working; this skill's overhead only earns its keep when the strand needs context-gathering before scoping

Outcome: two durable artifacts

1. A plan skeleton at claude-notes/plans/YYYY-MM-DD-<slug>.md, committed to the current branch (along with any investigative artifacts).
2. A triage verdict in the plan, plus design questions for the user — one of:
   • Ready to design — context clear, draft phases sketched, design questions ready for alignment.
   • Needs more info — specific questions that have to be answered before scoping makes sense.
   • Not ready / blocked — prerequisites missing, or discovered-from chain suggests the original problem was solved differently and the issue should be closed/deferred.

Investigative artifacts (small repros, exploratory snippets, notes you took while reading the dependency graph) live alongside the plan under claude-notes/plans/<slug>-investigation/ and are committed with it.

Steps

1. Pre-flight: verify HEAD is green

cargo xtask verify --skip-hub-build

Same rationale as triage: catches "the issue is already broken at HEAD" vs. "you introduced it" confusion later, and surfaces environment problems before the user is invested. If verify fails for a non-bootstrap reason, stop and tell the user. For fresh-clone bootstrap, see .claude/rules/worktrees.md § Fresh worktree bootstrap.

2. Read the issue

braid show <id> --json

(braid's show --json is a single object, not an array — read the description, status, type, priority, dates. Note who created it and when — old strands often have stale assumptions worth flagging.)

3. Walk the dependency graph

This is the step that earns the skill its keep. A strand's meaning is usually richer than its description; the graph carries why-it-was-filed and what-blocks-what.

braid dep tree <id>        # parent-child descendant tree (epic → subtasks)
braid dep list <id>        # all edges, both directions (blocks / related / discovered-from / ...)

For each linked strand, read it the same way. In particular:

• discovered-from chain: trace it. The originating issue (or session) usually has the context that explains why this one was filed — what the parent was trying to do when it surfaced this. Often the most informative single piece of context.
• blocks edges (incoming): things that depend on this one. If the dependents are open, they pin the urgency. If they're closed, this issue may already have been addressed differently.
• related: same area of the codebase; useful for "how is this normally done here."

4. Read the referenced plan + code

If the description references a plan file (claude-notes/plans/...), read it. If it points at code paths (crates/foo/src/bar.rs:line), read those.

Spot-check the area: does the code the strand points at still exist with the same shape? Strands age — a six-month-old strand may have been overtaken by a refactor.

5. Write the plan skeleton

This skill does not create or switch worktrees or branches. Write and commit in whatever checkout you were invoked in — the user controls where the work lands (a long-running worktree they pointed you at, the current branch, wherever). If you think a different branch or worktree is warranted, say so and let the user set it up; do not create one yourself.

Create claude-notes/plans/YYYY-MM-DD-<slug>.md (where <slug> is a short kebab-case form of the issue title, 3–5 words) using references/plan-skeleton-template.md. Put any investigative scratch (small fixtures, exploratory grep output you want to preserve) under claude-notes/plans/<slug>-investigation/.

The plan is a skeleton, not a finished plan. Phases are draft headings with rough work items; the design questions section is where the real thinking still has to happen with the user.

6. Plan-skeleton commit

git add -A
git commit -m "Investigate bd-XXXX: <one-line summary>"

Commits to the current branch — whichever checkout you were invoked in. Captures the plan skeleton + any investigative artifacts. Do not leave investigative files uncommitted — they are part of the record.

7. Strand: update status, do NOT close

braid update <id> --status in_progress

Even if the verdict is "not ready / blocked," leave the strand in in_progress — it has a plan now, which is progress. Closing should only happen when the plan recommends close (overtaken / not reproducible) AND the user agrees.

If you discovered any incidental work, file each as its own strand and link with --deps related:<this-id> or --deps discovered-from:<this-id> on braid create (one shot), e.g. braid create "..." -t task -p 2 --deps discovered-from:<this-id>.

braid syncs the skein automatically — there is nothing to commit for strand changes (no more br sync --flush-only; git add .beads/). The plan-skeleton commit in step 6 covers the durable artifacts.

8. Hand back to the user

Report:

• the branch the work landed on
• the plan-skeleton path
• the verdict in one line
• the design questions verbatim (so the user can respond inline without opening the file)

The user takes it from there: answers the questions to turn the skeleton into a real plan, says "not now," or asks for more investigation.

Anti-patterns

• Skipping the dependency graph. Reading only the issue description loses the "why was this filed" context that discovered-from carries. The graph is the highest-leverage step.
• Writing a finished plan instead of a skeleton. Real design happens in conversation; if the skeleton already pins the answer, the user has no room to redirect.
• Closing "not ready" issues unilaterally. Always make the close recommendation a question for the user, never a unilateral action.
• Skipping pre-flight verify. Same trap as triage: hides bootstrap problems inside the investigation.
• Forwarded TODOs in the open-questions section. Each question should be specific and answerable. "Figure out the design" is not a design question.
• Putting investigative artifacts in /tmp. They are part of the durable record; commit them under claude-notes/plans/<slug>-investigation/.
• Running the full skill for a 5-minute lookup. If the user just wants to know what a strand is, summarize from braid show and stop. The skill's overhead (plan skeleton + commit) earns its keep when the investigation needs to write code (repros, fixtures), not when it's purely descriptive.
• Creating or switching a worktree/branch on the user's behalf. This skill works in the checkout it was invoked in. If isolation seems warranted, recommend it and let the user set up the worktree/branch — do not run cargo xtask create-worktree / switch-task / git switch yourself.