Borrowing it
Nothing to install: this file belongs to barrosohub/frontend-stack-blueprint. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/barrosohub/frontend-stack-blueprint/main/.claude/skills/blueprint-maintenance/SKILL.mdgit clone --depth 1 https://github.com/barrosohub/frontend-stack-blueprintWrote 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/barrosohub/frontend-stack-blueprint/blueprint-maintenance)<a href="https://agentmods.dev/skills/barrosohub/frontend-stack-blueprint/blueprint-maintenance"><img src="https://agentmods.dev/badge/skills/barrosohub/frontend-stack-blueprint/blueprint-maintenance/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.
<a href="https://agentmods.dev/skills/barrosohub/frontend-stack-blueprint/blueprint-maintenance"><img src="https://agentmods.dev/badge/skills/barrosohub/frontend-stack-blueprint/blueprint-maintenance.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00063 | $0.03156 |
| Opus 5 | $0.00032 | $0.01578 |
| Sonnet 5 | $0.00013 | $0.00631 |
| Haiku 4.5 | $0.00006 | $0.00316 |
Grade A, and why
blueprint-maintenance 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 8d 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 — 368 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Blueprint Maintenance
This skill governs how agents safely maintain and evolve the Frontend Stack Blueprint. Follow every step rigorously. This repo is designed to survive decades — treat every edit with surgical precision.
Golden Rule
NEVER remove or weaken a consolidated decision without an explicit RFC and MAJOR version bump. Stable decisions are the foundation of trust. If in doubt, ADD context — don't delete existing content.
Universal Invariants (Technology-Agnostic)
These invariants apply regardless of framework, language, or tooling:
- Single source of truth — every project must define one canonical artifact for versions/rules (manifest/config/spec) and all other docs derive from it.
- No multi-surface drift — if a rule exists in multiple entry points, all must be updated in the same change set.
- Deterministic terminology — one canonical term per concept; avoid synonyms that can confuse agents and automation.
- Explicit temporality — temporal claims must include concrete versions/dates; avoid ambiguous language about "latest/current" without context.
- Traceable decision lifecycle — decisions move explicitly through active → under-evaluation → deprecated, with rationale and migration guidance.
- Non-silent removals — no silent deletion of consolidated decisions, technologies, or architecture principles.
Before ANY Edit
1. Identify the Change Type
| Type | Version Bump | Approval Required |
|---|---|---|
| Fix typo / broken link | PATCH | No |
| Bump min version of existing tech | PATCH | Verify compat first |
| Add new technology to stack | MINOR | Yes — full evaluation |
| Add new deployment target | MINOR | Yes |
| Remove technology from stack | MAJOR | Yes — RFC required |
| Change architecture principle | MAJOR | Yes — RFC required |
| Add rationale / guide / template | PATCH | No |
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.
- 8d ago First seen · 368 lines · 63 tokens per session scan A d723f57d2586
blueprint-maintenance is a skill published in the GitHub repository barrosohub/frontend-stack-blueprint (3 stars, last pushed 1mo ago), licensed MIT. It adds 63 tokens to every session and 3,156 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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