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.
npx agentmods add skills/talont-org/autoskillit/design-guardsnpx skills add TalonT-Org/AutoSkillit --skill design-guardsgit clone --depth 1 https://github.com/TalonT-Org/AutoSkillitWrote 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.
[](https://agentmods.dev/skills/talont-org/autoskillit/design-guards)<a href="https://agentmods.dev/skills/talont-org/autoskillit/design-guards"><img src="https://agentmods.dev/badge/skills/talont-org/autoskillit/design-guards.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00051 | $0.00981 |
| Opus 5 | $0.00026 | $0.00491 |
| Sonnet 5 | $0.00010 | $0.00196 |
| Haiku 4.5 | $0.00005 | $0.00098 |
Grade A, and why
design-guards 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.
How it starts
The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design Guards Skill
Take a bug pattern audit report and design architectural guards that make each pattern structurally impossible or instantly caught. This is a multi-pattern analysis driven by a pattern report rather than a single bug investigation.
When to Use
- After
/audit-bugsproduces a bug pattern report - User says "design guards", "design defenses", or "guard against these patterns"
- User wants architectural immunity for a set of identified bug patterns
Arguments
Path to a bug pattern audit report (typically under temp/audit-bugs/). If not specified, use the most recent temp/audit-bugs/bug_pattern_audit_*.md.
Critical Constraints
NEVER:
- Modify any source code files
- Propose bandaid fixes or direct-only patches
- Create files outside
temp/design-guards/directory
ALWAYS:
- Use subagents for parallel codebase exploration
- Focus on structural immunity over one-off fixes
- Each guard must be concrete and testable
- All output goes under
temp/design-guards/(create if needed) - Final report:
temp/design-guards/defense_guards_{YYYY-MM-DD_HHMMSS}.md - Subagents must NOT create their own files - they return findings in their response text only
- Do not change any code
Workflow
Step 1: Parse the Bug Pattern Report
Read the input report and extract each pattern:
- Pattern name and description
- Affected components and sessions
- The root architectural gap identified
Step 2: Investigate Each Pattern in Parallel
For each pattern (or group of related patterns), launch subagents to explore:
Current State
- Find all current instances of the pattern in the codebase (not just the ones that already caused bugs)
- Map which components are vulnerable to this pattern today
Existing Guards
- What tests, contracts, or validation already exists for this area?
- Why did existing guards miss these bugs?
Architectural Solutions
- How do well-designed parts of the codebase prevent similar issues?
- What structural pattern would make this class of bug impossible?
- What's the minimum change that provides maximum coverage?
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.
- 6d ago First seen · 128 lines · 51 tokens per session scan A 71858df112e6
design-guards is a skill published in the GitHub repository TalonT-Org/AutoSkillit (5 stars, last pushed 7d ago), licensed MIT. It adds 51 tokens to every session and 981 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.
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