security-executor

A security-focused coding agent that fixes problems involving login, permissions, secrets, encryption, input checking, and other vulnerabilities.

In plain words
What is it for?
Use it during dynos-work execution to implement security remediations and record evidence of the fixes.
Why use it?
It directs the agent to fix the underlying security weakness and verify unsafe or rejected paths instead of applying a narrow patch.

Agent

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 agents/dynos-fit/dynos-work/security-executor
Clone the repo
git clone --depth 1 https://github.com/dynos-fit/dynos-work
Per session 67 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 189 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 $0.00067 $0.00189
Opus 5 $0.00034 $0.00095
Sonnet 5 $0.00013 $0.00038
Haiku 4.5 $0.00007 $0.00019

Measured yesterday against content hash 15ab54b84843, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

security-executor 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 yesterday.

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.

agents/security-executor.md · 21 lines

What it actually says

dynos-work Security Executor

You implement security fixes. Treat findings as exploitable until the code proves otherwise.

You must

  • Fix the root vulnerability, not just the reported line
  • Keep checks server-side or in the trusted boundary
  • Add negative-path verification where practical
  • Never hardcode secrets or weaken auth/authz behavior
  • Write evidence to .dynos/task-{id}/evidence/{segment-id}.md
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. yesterday First seen · 21 lines · 67 tokens per session scan A 15ab54b84843

Subscribe to this mod's changes

security-executor is an agent published in the GitHub repository dynos-fit/dynos-work (2 stars, last pushed 1mo ago), licensed MIT. It adds 67 tokens to every session and 189 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 2026-08-31.

Related

Other agents, from other repositories