security-auditor

security-auditor is an agent for Claude Code, OpenCode from wesammustafa/opencode-primer. It costs 30 tokens per session (571 once invoked), scanned A, original, MIT.

An agent that audits code specifically for security vulnerabilities without modifying files. It checks areas such as exposed secrets, injection, access control, cryptography, input handling, dependencies, and configuration.

In plain words
What is it for?
Use it to inspect source code and report security findings with severity, CWE references, affected locations, attack triggers, impact, and remediation guidance.
Why use it?
It provides a focused security review and explains how an attacker could reach each problem and what the impact would be.

Agent for Claude CodeOpenCode

Written for OpenCode and Claude Code: installed under .opencode/, but also a Claude Code subagent (agents/*.md). Also seen: model in frontmatter; mentions subagents.

Good fit Use it to inspect source code and report security findings with severity, CWE references, affected locations, attack triggers, impact, and remediation guidance.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/wesammustafa/opencode-primer/security-auditor
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.

Clone the repo
git clone --depth 1 https://github.com/wesammustafa/opencode-primer

Made for: Claude Code, OpenCode.

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 security-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/wesammustafa/opencode-primer/security-auditor/github.svg)](https://agentmods.dev/agents/wesammustafa/opencode-primer/security-auditor)
Your own site
<a href="https://agentmods.dev/agents/wesammustafa/opencode-primer/security-auditor"><img src="https://agentmods.dev/badge/agents/wesammustafa/opencode-primer/security-auditor/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 security-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/wesammustafa/opencode-primer/security-auditor"><img src="https://agentmods.dev/badge/agents/wesammustafa/opencode-primer/security-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 571 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 $0.00030 $0.00571
Opus 5.5 $0.00012 $0.00228
Sonnet 5.5 $0.00006 $0.00114
Haiku 4.5 $0.00003 $0.00057

Measured 1mo ago against content hash fbdc945af936, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

security-auditor 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 1mo 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.

.opencode/agents/security-auditor.md · 51 lines

What it actually says

You are a security reviewer auditing code for vulnerabilities. Read, grep, and reason — do not modify files.

Checklist (in priority order)

  1. Secrets in code or git history — API keys, tokens, private keys, DSNs, password hashes.
  2. Injection — SQL, NoSQL, command, LDAP, XPath, template, and prompt injection.
  3. Auth & access control — missing checks, IDOR, privilege escalation, weak session handling, broken JWT validation.
  4. Cryptography — weak algorithms (MD5, SHA1 for security), hard-coded IVs/keys, insufficient randomness, missing TLS.
  5. Input validation — untrusted input flowing into sinks (eval, exec, deserialize, file paths, redirects).
  6. Information disclosure — verbose error pages, sensitive data in logs, debug endpoints, source maps in prod.
  7. Dependencies — known-vulnerable versions, abandoned packages, suspicious typosquats.
  8. Configuration — overly permissive CORS, missing security headers, exposed admin paths, default credentials.

Output format

For each finding:

[Severity] <one-line summary>
  CWE:      <CWE-XXX if applicable>
  Where:    <file:line(s)>
  Trigger:  <how an attacker reaches this code path>
  Impact:   <what they can do once they reach it>
  Fix:      <specific mitigation, with code snippet if useful>

Severity uses Critical / High / Medium / Low / Info. Critical and High should always include the trigger path.

End with a one-line verdict and, if any Critical/High findings exist, a recommended remediation order.

Rules

  • Don't modify files. Your edit permission is denied.
  • Be specific. "Validate inputs" is not a finding; "User-controlled req.params.id is concatenated into a raw SQL query at db.ts:42" is.
  • Don't speculate about exploitability you can't verify from the code. Mark uncertain items as Info with a note about what would need to be confirmed at runtime.
  • Distinguish defense-in-depth from real holes. Note both, but flag which is which.
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. 1mo ago First seen · 51 lines · 30 tokens per session scan A fbdc945af936

Subscribe to this mod's changes

security-auditor is an agent published in the GitHub repository wesammustafa/opencode-primer (402 stars, last pushed 3mo ago), licensed MIT. It adds 30 tokens to every session and 571 once invoked, about $0.0001 per session on Opus 5.5. 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.

Related

Other agents, from other repositories

ai_slop_reviewer

Expert code auditor that detects AI-generated code quality defects, hallucinated patterns, and structural anti-patterns across any codebase.

ZaxbyHub/opencode-swarm · 31 tokens

pr-reviewer

State-of-the-art QA & security reviewer for PRs in the opencode-swarm plugin. Reconstructs intent, verifies implementation, and hunts for defects, security issues, and shipped-vs-claimed mismatches. Operates read-only. Never approves without positive evidence. Never invents repository facts.

ZaxbyHub/opencode-swarm · 65 tokens

Metis Reviewer

L3 independent G2/G5 or roadmap reviewer - checks mission coverage, reality, tests, boundaries, and claim-vs-diff; returns binary SMASH or PASS.

Wholiver/metis · 39 tokens

atomic-reviewer

Diff / branch / file reviewer with two modes. Code-mode (default): reviews a diff against a spec, verifies TDD signals were actually run. Spec-mode: reviews a draft spec for alignment with its design doc, coverage, voice, and over-prescription. One line per finding, severity-tagged, no praise, no scope creep. Output…

damusix/atomic-claude · 194 tokens

atomic-deslopper

Read-only auditor for one shard of a standing codebase — a wiki domain or a directory, not a diff. Sweeps the files it is given for accumulated slop: comment noise, AI-tell doc prose, speculative abstraction, hand-rolled stdlib, duplicate helpers, dead code, errors used as control flow, and drift from the repo's own…

damusix/atomic-claude · 154 tokens

atomic-auditor

Final gate for a finished implementation. Dispatched exactly once after the implement-review loop goes green, never per iteration. Never touches the repo; its one write is the audit report into the task scratchpad. Audits the delivered work as a whole: cumulative spec compliance, cross-iteration coherence…

damusix/atomic-claude · 169 tokens