reconstruct-system-intent

A final analysis workflow for reconstructing what a software system was designed to become from its architecture, feature gates, tool relationships, and development history.

In plain words
What is it for?
It is for combining earlier analysis files into a report about the system's purpose, technical advantage, hidden capabilities, and likely evolution.
Why use it?
It helps reveal the system's intended direction and important capabilities that may not be obvious from the user-facing client.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/quangphu1912/codebase-analyzer/reconstruct-system-intent
Any agent
npx skills add quangphu1912/codebase-analyzer --skill reconstruct-system-intent
Clone the repo
git clone --depth 1 https://github.com/quangphu1912/codebase-analyzer

Made for: Claude Code, Codex.

Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,206 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00038 $0.01206
Opus 5 $0.00019 $0.00603
Sonnet 5 $0.00008 $0.00241
Haiku 4.5 $0.00004 $0.00121

Measured 2d ago against content hash b4662e034117, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

reconstruct-system-intent 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 2d 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.

skills/reconstruct-system-intent/SKILL.md · 137 lines

How it starts

The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Announce at start: "Using codebase-analyzer to reconstruct system intent."

Overview

What was this system designed to become? Not what it claims to do, but what the architecture, gates, and hidden capabilities reveal about its true purpose. The real moat is rarely in the client binary -- it is in the service/backend layer.

Prerequisite: Reads ALL completed analysis files from docs/analysis/. This is the terminal skill -- it consumes every prior analysis output.

Five Intent Questions

Answer these by synthesizing evidence across all analysis phases:

  1. What is this system designed to become? Sources: architecture.md + tool-graph.md + gate-map.md + git archaeology (evolution trajectory) Look for: abandoned features revealing planned direction, investment patterns in service layer vs client, architectural decisions that only make sense at scale.

  2. Where is the moat? Sources: gate-map.md (feature gate analysis) + tool-graph.md (tool registration) -- client vs service vs ecosystem Look for: where the most complex logic lives, which capabilities are server-controlled, what would be hardest to replicate.

  3. What can it do that it does not expose? Sources: tool-graph.md + gate-map.md + dead-code.md Look for: conditionally registered but currently dormant tools, hidden admin capabilities, API endpoints behind disabled feature flags.

  4. How is behavior really controlled? Sources: prompt-influence.md + gate-map.md (feature gates) Look for: remote configuration driving tool availability, prompt instructions shaping behavior at inference time, server-driven capability gating.

  5. What are the hidden dependencies? Sources: provenance.md + build-pipeline.md Look for: undocumented telemetry endpoints, data sent to services not mentioned in public docs, build-time pins to specific infrastructure.

Synthesis Output

Produce a single comprehensive report:

# Codebase Analysis Report
## Date: [YYYY-MM-DD]
## Target: [repo path/description]

### Executive Summary
(2-3 sentences: what the system is, its maturity, and the most important finding)

### Track A: Code Quality Findings
- Target classification and tech stack
- Architecture overview
- Dependency health
- Dead code inventory
- API surface summary
- Code quality assessment
- Refactoring recommendations (prioritized by impact/effort)

### Track B: System Intelligence Findings
- Provenance and build pipeline analysis
- Agent loop and tool graph
- Conditional behavior and feature gates
- Prompt influence analysis
- Threat model (what the system could do if misused)

### System Intent Narrative
(Answer each of the five intent questions with evidence and confidence level)

### Confidence-Weighted Evidence Map
| Finding | Confidence | Evidence Sources | Gaps |
|---------|-----------|-----------------|------|
| (finding) | High/Med/Low | (which files/analysis) | (what would strengthen) |

### Priority Actions
1. (highest impact, most urgent)
2. ...

Read the full file on GitHub · 137 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. 2d ago First seen · 137 lines · 38 tokens per session scan A b4662e034117

Subscribe to this mod's changes

reconstruct-system-intent is a skill published in the GitHub repository quangphu1912/codebase-analyzer (2 stars, last pushed 4mo ago), licensed MIT. It adds 38 tokens to every session and 1,206 once invoked, about $0.0002 per session on Opus 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 2026-08-31.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

brainstorming

You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.

obra/superpowers · 37 tokens

chat-pet-sprite-creation

Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.

microsoft/vscode · 53 tokens

cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…

microsoft/vscode · 71 tokens

agent-host-chat-contributions

Build and review cross-cutting agent-host chat behavior through lifecycle contributions. Use when adding turn lifecycle side effects, prompt or context injection, restored-history transformation, protocol-action observation, or when reviewing changes that add code to AgentSideEffects or AgentService.

microsoft/vscode · 56 tokens

auto-perf-optimize

Run agent-driven VS Code performance or memory investigations. Use when asked to launch Code OSS, automate a VS Code scenario, run the Chat memory smoke runner, capture renderer heap snapshots, take workflow screenshots, compare run summaries, or drive a repeatable scenario before heap-snapshot analysis.

microsoft/vscode · 62 tokens