christina-cpg

christina-cpg is a skill for Claude Code, Codex from amadeus-ex-machina/christina. It costs 25 tokens per session (194 once invoked), scanned A, original, MIT.

A code-analysis tool that maps how parts of a program relate to one another. A code property graph is a structured map of code symbols, their uses, execution paths, and dependencies.

In plain words
What is it for?
Tracing where values are defined and used, examining control flow, finding implemented interfaces, identifying highly connected code, detecting dependency cycles, and calculating change impact.
Why use it?
It helps an agent investigate unfamiliar code and estimate what might be affected by changing a function, class, or other symbol.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Tracing where values are defined and used, examining control flow, finding implemented interfaces, identifying highly connected code, detecting dependency cycles, and calculating change impact.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/amadeus-ex-machina/christina/cpg
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 amadeus-ex-machina/christina --skill cpg
Clone the repo
git clone --depth 1 https://github.com/amadeus-ex-machina/christina

Made for: Claude Code, 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 christina-cpg

README.md
[![agentmods](https://agentmods.dev/badge/skills/amadeus-ex-machina/christina/cpg/github.svg)](https://agentmods.dev/skills/amadeus-ex-machina/christina/cpg)
Your own site
<a href="https://agentmods.dev/skills/amadeus-ex-machina/christina/cpg"><img src="https://agentmods.dev/badge/skills/amadeus-ex-machina/christina/cpg/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 christina-cpg

Your own site · 80×15
<a href="https://agentmods.dev/skills/amadeus-ex-machina/christina/cpg"><img src="https://agentmods.dev/badge/skills/amadeus-ex-machina/christina/cpg.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 194 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 $0.00025 $0.00194
Opus 5 $0.00013 $0.00097
Sonnet 5 $0.00005 $0.00039
Haiku 4.5 $0.00003 $0.00019

Measured 11d ago against content hash e64f18eebfbf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

christina-cpg 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 11d 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/cpg/SKILL.md · 18 lines

What it actually says

Christina CPG Radar

Deterministic Code Property Graph and AST analysis for zero-daemon codebase navigation.

Tool: cpg_query

  • Blast radius: cpg_query(symbol="TargetSymbol", mode="blast_radius", depth=3)
  • Def-use chains: cpg_query(symbol="TargetSymbol", mode="def_use")
  • Control flow: cpg_query(symbol="TargetSymbol", mode="cfg")
  • Virtual interfaces: cpg_query(mode="vinterfaces")
  • God nodes / Top hubs: cpg_query(mode="god_nodes")
  • Circular dependencies: cpg_query(mode="cycles")
  • Execution waves: cpg_query(mode="waves")
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. 11d ago First seen · 18 lines · 25 tokens per session scan A e64f18eebfbf

Subscribe to this mod's changes

christina-cpg is a skill published in the GitHub repository amadeus-ex-machina/christina (0 stars, last pushed 18d ago), licensed MIT. It adds 25 tokens to every session and 194 once invoked, about $0.0001 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.

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