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/vaquarkhan/fullstack-development-agent-skills/aws-serverless-fullstacknpx skills add vaquarkhan/Fullstack-development-agent-skills --skill aws-serverless-fullstackgit clone --depth 1 https://github.com/vaquarkhan/Fullstack-development-agent-skillsWhat 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 | $0.00040 | $0.00148 |
| Opus 5 | $0.00020 | $0.00074 |
| Sonnet 5 | $0.00008 | $0.00030 |
| Haiku 4.5 | $0.00004 | $0.00015 |
Grade A, and why
aws-serverless-fullstack 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.
What it actually says
AWS Serverless Fullstack Preset
Defaults
- API Gateway + Lambda for synchronous APIs
- Cognito for user authentication
- S3 + CloudFront for frontend assets
- EventBridge or SQS for async workflows
- X-Ray and CloudWatch alarms for critical paths
Recommended Pairings
- aws-serverless-fullstack-architecture
- aws-cognito-authentication-patterns
- serverless-event-driven-and-workflow-orchestration
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 · 22 lines · 40 tokens per session scan A b3c02f7ab08f
aws-serverless-fullstack is a skill published in the GitHub repository vaquarkhan/Fullstack-development-agent-skills (2 stars, last pushed 18d ago), licensed MIT. It adds 40 tokens to every session and 148 once invoked, about $0.0002 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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