trove-why

trove-why is a skill for Claude Code from bravew/trove. It costs 79 tokens per session (592 once invoked), scanned A, original, MIT.

A research workflow for reconstructing why a project was designed a certain way from historical evidence. It can examine source control, Linear issues, Notion documents, Slack messages, and Sentry error reports when those sources are available.

In plain words
What is it for?
It helps investigate design choices, regressions, and postmortems by tracing decisions through commits, pull requests, issues, documents, conversations, and error reports.
Why use it?
Current code shows what a system does, but not necessarily why it does it. This workflow reduces guesses by comparing bounded evidence and reporting confidence.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: installed under .agents/ (shared by several agents); mentions AGENTS.md.

Part of the trove-workflow plugin — 24 skills shipped together

Good fit It helps investigate design choices, regressions, and postmortems by tracing decisions through commits, pull requests, issues, documents, conversations, and error reports.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bravew/trove/trove-why
View source ↗ bravew/trove
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add bravew/trove --skill trove-why
Clone the repo
git clone --depth 1 https://github.com/bravew/trove

Made for: Claude Code.

Or install trove-workflow, the plugin that ships this one along with the rest of its 24 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for trove-why

README.md
[![agentmods](https://agentmods.dev/badge/skills/bravew/trove/trove-why/github.svg)](https://agentmods.dev/skills/bravew/trove/trove-why)
Your own site
<a href="https://agentmods.dev/skills/bravew/trove/trove-why"><img src="https://agentmods.dev/badge/skills/bravew/trove/trove-why/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for trove-why

Your own site · 80×15
<a href="https://agentmods.dev/skills/bravew/trove/trove-why"><img src="https://agentmods.dev/badge/skills/bravew/trove/trove-why.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 592 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00079 $0.00592
Opus 5.5 $0.00032 $0.00237
Sonnet 5.5 $0.00016 $0.00118
Haiku 4.5 $0.00008 $0.00059

Measured 1mo ago against content hash 9436534c7932, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

trove-why scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/trove-workflow/.agents/skills/trove-why/SKILL.md · 44 lines

How it starts

The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Session Init

This skill ships Trove conventions. Prefer existing project patterns over generic best practices when they conflict.

If a sibling skill in this plugin matches the request more directly, defer to it. See AGENTS.md (or docs/routing.md in the marketplace) for the per-plugin routing index.

trove-why

Reconstruct intent from fragmentary historical evidence. Never infer intent from the code's current shape — that tells you what is, not why.

Evidence sources

Query the evidence sources that are actually available, one bounded read-only pass each (delegate in parallel when several apply — see docs/orchestration.md):

Category Where Tools (fully-qualified)
Source control git log/blame, PRs git, gh
Issue tracker Linear Linear:list_issues, Linear:get_issue
Long-form docs Notion Notion:search_pages, Notion:get_page
Real-time chat Slack Slack:search_messages, Slack:get_thread
Error tracking Sentry Sentry:search_issues, Sentry:get_issue

Reference MCP tools by their fully-qualified Server:tool name — bare names fail to resolve when several servers are loaded. Keep queries targeted (a specific issue, a dated thread); do not pull whole issue lists or entire docs into context (MCP calls are token-expensive). A server that isn't connected is a null result to report, not an error.

Output

Separate what you know from what you're guessing:

  • What we found — direct evidence, each claim cited to its source.
  • What we can reasonably infer — clearly labeled as inference, not fact.
  • Competing hypotheses — when the evidence is ambiguous, list them; don't collapse to one.
  • Sources consulted — which sources were available, which were queried, and which returned nothing. A null result is first-class evidence.

Don't fabricate a rationale to fill a gap. "No evidence found; here is the most likely explanation, low confidence" is a valid and honest answer.

Read the full file on GitHub · 44 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 44 lines · 79 tokens per session scan A 9436534c7932

Subscribe to this mod's changes

trove-why is a skill published in the GitHub repository bravew/trove (10 stars, last pushed yesterday), licensed MIT. It adds 79 tokens to every session and 592 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-11.

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