create-preprocessor-scripts

A procedure for creating a Python preprocessor that finds a requested function, virtual function, data structure member, patch, or virtual table in a Counter-Strike 2 binary. It also adds the matching entries to the game's YAML configuration.

In plain words
What is it for?
Use it when a GitHub issue or user request asks for a new binary finder, especially one based on debug-string references or decompiled code.
Why use it?
It gives a repeatable way to add support for symbols that the analysis tools do not yet know how to find. It prevents changes from being written to the wrong game-version configuration.

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/hlnd2t/cs2_vibesignatures/create-preprocessor-scripts
Any agent
npx skills add HLND2T/CS2_VibeSignatures --skill create-preprocessor-scripts
Clone the repo
git clone --depth 1 https://github.com/HLND2T/CS2_VibeSignatures

Made for: Claude Code, Codex.

Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 17,558 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 $0.00070 $0.17558
Opus 5 $0.00035 $0.08779
Sonnet 5 $0.00014 $0.03512
Haiku 4.5 $0.00007 $0.01756

Measured 2d ago against content hash f389ca240604, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

create-preprocessor-scripts 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.

.claude/skills/create-preprocessor-scripts/SKILL.md · 1,099 lines

How it starts

The opening of the file, as written. The whole thing — 1,099 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Create Preprocessor Scripts from Scratch

Create an ida_preprocessor_scripts/find-XXXX.py preprocessor script and add the corresponding configs/<GAMEVER>.yaml entries for a newly requested function, vtable, or struct member offset.

Resolve GAMEVER from the user's explicit request or CS2VIBE_GAMEVER, set the edit target to configs/$GAMEVER.yaml, and stop if that exact file does not exist. Never edit another version as a fallback.

When to Use

  • A GitHub issue or user instruction requests adding support for finding a new function/symbol
  • No existing .claude/skills/find-XXXX/SKILL.md needs conversion (for that, use convert-finder-skill-to-preprocessor-scripts)

Inputs

The user or issue will provide some or all of:

Field Description Example
Function name(s) Target symbol(s) to find CPlayer_MovementServices_PlayWaterStepSound
Module Which DLL/SO the function lives in server, engine, networksystem, client
Category Symbol type func, vfunc, structmember, patch, vtable
xref_strings Debug strings for xref-based discovery "CT_Water.StepLeft"
xref_gvs Global variable VA (e.g. vtable address) to find functions that reference it vtable VA from SomeClass_vtable.{platform}.yaml
xref_funcs Known callee function name to find its callers "CPlayerCommandQueue_ctor"
Predecessor function Function to decompile for LLM_DECOMPILE patterns CBaseEntity_TakeDamageOld
VTable class Class owning the vtable (for vfuncs) CBasePlayerPawn
Desired YAML fields Which fields the output YAML needs func_name, func_sig, func_va, func_rva, func_size
Dependencies Input YAMLs this skill depends on CCSPlayer_MovementServices_vtable.{platform}.yaml
Aliases Alternative names for the symbol CPlayer_MovementServices::PlayWaterStepSound

Overview

Twelve preprocessor patterns exist. The discovery method and target type determine which to use:

Read the full file on GitHub · 1,099 lines

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 · 1,099 lines · 70 tokens per session scan A f389ca240604

Subscribe to this mod's changes

create-preprocessor-scripts is a skill published in the GitHub repository HLND2T/CS2_VibeSignatures (65 stars, last pushed 2d ago), licensed MIT. It adds 70 tokens to every session and 17,558 once invoked, about $0.0003 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 2026-08-30.

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