address-sanitizer

address-sanitizer is a skill for Claude Code, Codex from OutlineDriven/odin-claude-plugin. It costs 40 tokens per session (1,435 once invoked), scanned A, a copy of address-sanitizer, Apache-2.0.

A guide for using AddressSanitizer, a tool that detects many memory errors in native programs. It can instrument a build and test run or interpret an existing sanitizer report.

In plain words
What is it for?
Use it with C or C++ programs, Rust unsafe code, foreign-function interfaces, or fuzz harnesses to investigate memory errors.
Why use it?
It helps locate memory-corruption bugs and connect a reported fault to the relevant source, allocation, and deallocation code.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Part of the odin-fuzzing plugin — 12 skills shipped together

Good fit Use it with C or C++ programs, Rust unsafe code, foreign-function interfaces, or fuzz harnesses to investigate memory errors.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/outlinedriven/odin-claude-plugin/address-sanitizer
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 OutlineDriven/odin-claude-plugin --skill address-sanitizer
Clone the repo
git clone --depth 1 https://github.com/OutlineDriven/odin-claude-plugin

Made for: Claude Code, Codex.

Or install odin-fuzzing, the plugin that ships this one along with the rest of its 12 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 address-sanitizer

README.md
[![agentmods](https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/address-sanitizer/github.svg)](https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/address-sanitizer)
Your own site
<a href="https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/address-sanitizer"><img src="https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/address-sanitizer/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 address-sanitizer

Your own site · 80×15
<a href="https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/address-sanitizer"><img src="https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/address-sanitizer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,435 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 95% 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 $0.00040 $0.01435
Opus 5 $0.00020 $0.00718
Sonnet 5 $0.00008 $0.00287
Haiku 4.5 $0.00004 $0.00144

Measured 6d ago against content hash 7a5a025c46c0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

address-sanitizer 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 6d 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

95% identical to address-sanitizer — 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.

plugins/odin-fuzzing/skills/address-sanitizer/SKILL.md · 49 lines

How it starts

The opening of the file, as written. The whole thing — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AddressSanitizer

Contract

Field Bound contract
Trigger User needs to build or run native code with ASan, interpret an ASan report, or debug a memory-corruption failure.
Authority Reversible local: writes only the instrumented build artifacts and test invocations named by the user; rollback is discarding the instrumented binary and rebuilding without -fsanitize=address. No remote mutation.
Side effect Instrumented native build and test process under the target project directory.
Done When building or running: the target is instrumented, exercised, and any reported memory error is explained with a reproducible location. When interpreting an existing report: the error type, faulting source location, and allocation/deallocation sites are extracted from the report and mapped to a root cause, without requiring a fresh instrumented run.

Inputs

Required when building or running: the native source or build target to instrument (C/C++ source, Rust crate with unsafe blocks or FFI, or an existing fuzz harness) and the command that exercises it.

Required when interpreting a report: a specific ASan report file or captured ASan output.

Optional: a preferred sanitizer combination, or a fuzzer in use (libFuzzer, AFL++, cargo-fuzz, honggfuzz). When interpreting a report, the build target and exercise command are also optional and used only to confirm the root cause against source.

Procedure

  1. Determine the invocation mode. If the user supplies an existing ASan report or captured output, take the report-interpretation branch (step 2R) and skip the build-and-run steps (3–9). If the user asks to build or run a target under ASan, take the build-and-run branch (steps 3–9). Done when: the mode is selected.

2R. Report interpretation. Read the supplied ASan report and extract the error type (heap-buffer-overflow, use-after-free, double-free, stack-buffer-overflow, memory leak), the faulting stack trace with source file and line, and the allocation/deallocation traces. If source is available, correlate the faulting and alloc/dealloc frames to the source to state the root cause. Done when: the error type, faulting location, and alloc/dealloc locations are extracted from the report and the root cause is stated. This branch does not require a fresh instrumented run.

Read the full file on GitHub · 49 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. 6d ago First seen · 49 lines · 40 tokens per session scan A 7a5a025c46c0

Subscribe to this mod's changes

address-sanitizer is a skill published in the GitHub repository OutlineDriven/odin-claude-plugin (36 stars, last pushed 3d ago), licensed Apache-2.0. It adds 40 tokens to every session and 1,435 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to address-sanitizer, differing in 0 lines, and is treated as a copy.

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