competition-bundle-sourcemap-recovery

competition-bundle-sourcemap-recovery is a skill for Codex from Saprophytic-seattle561/reverse-skill. It costs 112 tokens per session (639 once invoked), scanned A, a copy of competition-bundle-sourcemap-recovery, MIT.

A specialized security-analysis guide for recovering how a website's delivered JavaScript works from source maps, build manifests, bundles, and chunk files.

In plain words
What is it for?
Use it to inspect entry HTML, asset maps, chunk loaders, source maps, endpoint strings, and the runtime path of frontend assets in an authorized sandbox.
Why use it?
It helps reconstruct the code that actually runs in the browser when built or obfuscated files differ from the checked-in source.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: $skill-name invocation.

Good fit Use it to inspect entry HTML, asset maps, chunk loaders, source maps, endpoint strings, and the runtime path of frontend assets in an authorized sandbox.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/saprophytic-seattle561/reverse-skill/competition-bundle-sourcemap-recovery
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 Saprophytic-seattle561/reverse-skill --skill competition-bundle-sourcemap-recovery
Clone the repo
git clone --depth 1 https://github.com/Saprophytic-seattle561/reverse-skill

Made for: Codex.

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 competition-bundle-sourcemap-recovery

README.md
[![agentmods](https://agentmods.dev/badge/skills/saprophytic-seattle561/reverse-skill/competition-bundle-sourcemap-recovery/github.svg)](https://agentmods.dev/skills/saprophytic-seattle561/reverse-skill/competition-bundle-sourcemap-recovery)
Your own site
<a href="https://agentmods.dev/skills/saprophytic-seattle561/reverse-skill/competition-bundle-sourcemap-recovery"><img src="https://agentmods.dev/badge/skills/saprophytic-seattle561/reverse-skill/competition-bundle-sourcemap-recovery/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 competition-bundle-sourcemap-recovery

Your own site · 80×15
<a href="https://agentmods.dev/skills/saprophytic-seattle561/reverse-skill/competition-bundle-sourcemap-recovery"><img src="https://agentmods.dev/badge/skills/saprophytic-seattle561/reverse-skill/competition-bundle-sourcemap-recovery.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 112 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 639 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 100% copy Near-identical to another mod 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 $0.00112 $0.00639
Opus 5 $0.00056 $0.00319
Sonnet 5 $0.00022 $0.00128
Haiku 4.5 $0.00011 $0.00064

Measured 8d ago against content hash 8f89baa5ea28, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

competition-bundle-sourcemap-recovery 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 8d 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.

Origin

This is a copy

100% identical to competition-bundle-sourcemap-recovery — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

CTF-Sandbox-Orchestrator/competition-bundle-sourcemap-recovery/SKILL.md · 51 lines

How it starts

The opening of the file, as written. The whole thing — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Competition Bundle Sourcemap Recovery

Use this skill only as a downstream specialization after $ctf-sandbox-orchestrator is already active and has established sandbox assumptions, node ownership, and evidence priorities. If that has not happened yet, return to $ctf-sandbox-orchestrator first.

Use this skill when runtime truth lives in built assets, source maps, chunk tables, or obfuscated loader flow rather than in checked-in source alone.

Reply in Simplified Chinese unless the user explicitly requests English.

Quick Start

  1. Start from the served artifact set: entry HTML, build manifest, bootstrap bundle, chunk map, and source maps.
  2. Record chunk ids, route chunks, loader functions, endpoint strings, and config keys before broad manual deobfuscation.
  3. Reconstruct the smallest runtime graph that explains which asset executes now.
  4. Keep served artifact truth separate from repository source unless parity is proven.
  5. Reproduce the smallest asset-to-runtime boundary that proves the decisive behavior.

Workflow

1. Map The Served Artifact Set

  • Record entry HTML, script tags, preload hints, manifest files, asset map, chunk registry, and source map URLs.
  • Note framework-specific artifacts such as route manifests, client reference manifests, or lazy-loader tables when present.
  • Keep emitted filenames, hash suffixes, and route ownership tied together.

2. Reconstruct Runtime Structure

  • Follow bootstrap code, chunk loaders, module registry, string decoders, and lazy import boundaries.
  • Use source maps, manifest files, and stable symbol clusters to recover route names, API calls, feature flags, and hidden panels.
  • Distinguish build-time intent from the bundle that is actively served now.

3. Reduce To The Decisive Bundle Path

  • Compress the result to the smallest sequence: served asset -> loader path -> module or symbol -> runtime effect.
  • State clearly whether the decisive weakness lives in manifest drift, chunk loading, hidden route code, string decoding, or stale source assumptions.
  • If the task shifts from built assets to SSR or template enforcement, hand back to the tighter template-render skill.

Read the full file on GitHub · 51 lines

Files

What ships with it

2 files 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. 8d ago First seen · 51 lines · 112 tokens per session scan A 8f89baa5ea28

Subscribe to this mod's changes

competition-bundle-sourcemap-recovery is a skill published in the GitHub repository Saprophytic-seattle561/reverse-skill (1 stars, last pushed yesterday), licensed MIT. It adds 112 tokens to every session and 639 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to competition-bundle-sourcemap-recovery, differing in 0 lines, and is treated as a copy.

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