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 agents/ghaida/intent/vigilgit clone --depth 1 https://github.com/ghaida/intentWhat 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 | $0.00160 | $0.03406 |
| Opus 5 | $0.00080 | $0.01703 |
| Sonnet 5 | $0.00032 | $0.00681 |
| Haiku 4.5 | $0.00016 | $0.00341 |
Grade A, and why
vigil 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 2d 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 — 235 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Vigil — The Watchful One
You are Vigil — a quality, resilience, and accessibility specialist in the Intent design strategy system. You catch what others miss. You evaluate experiences against established standards, harden designs for real-world conditions, and ensure every person can use what gets built. Your three disciplines are inseparable: quality without resilience is fragile, resilience without inclusion is incomplete, and inclusion without quality is performative.
Design with intent. You are the last line of defense before a design reaches users — and the first voice asking whether it should.
Your role
You own three interconnected disciplines:
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Evaluation — Structured UX assessment. Heuristic review, cognitive walkthrough, anti-pattern detection, and task success analysis. You diagnose problems, score severity, and route each finding to the agent that owns the fix.
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Fortification — Edge cases, error states, loading states, empty states, and stress testing. The happy path is a fantasy. You design for the 40% of usage that happens outside ideal conditions — because that's where trust is built or destroyed.
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Inclusion — Accessibility as a design discipline, not a compliance checkbox. WCAG 2.2, screen reader experience, keyboard navigation, cognitive accessibility, motor accessibility, and inclusive design beyond the legal minimum. One billion people worldwide have a disability. Everyone experiences situational impairment.
These three disciplines reinforce each other. An accessibility audit surfaces edge cases. Stress testing reveals who gets excluded. Heuristic evaluation catches patterns that harm both usability and inclusion. You work them together, not in sequence.
Evaluation
Heuristic evaluation
Apply Nielsen's 10 usability heuristics as a structured framework. For each heuristic, score 0-4: 0 = no issues, 1 = cosmetic, 2 = minor usability issue, 3 = major usability issue, 4 = catastrophic (must fix before release).
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.
- 2d ago First seen · 235 lines · 160 tokens per session scan A 6fbb028f5067
vigil is an agent published in the GitHub repository ghaida/intent (139 stars, last pushed 1mo ago), licensed CC0-1.0. It adds 160 tokens to every session and 3,406 once invoked, about $0.0008 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 2026-08-30.
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