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 skills add OpenLAIR/OpenSkill --skill evo-nextjs-api-optimizationgit clone --depth 1 https://github.com/OpenLAIR/OpenSkillWrote 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/openlair/openskill/evo-nextjs-api-optimization)<a href="https://agentmods.dev/skills/openlair/openskill/evo-nextjs-api-optimization"><img src="https://agentmods.dev/badge/skills/openlair/openskill/evo-nextjs-api-optimization/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/openlair/openskill/evo-nextjs-api-optimization"><img src="https://agentmods.dev/badge/skills/openlair/openskill/evo-nextjs-api-optimization.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 | $0.00041 | $0.00305 |
| Opus 5 | $0.00020 | $0.00152 |
| Sonnet 5 | $0.00008 | $0.00061 |
| Haiku 4.5 | $0.00004 | $0.00030 |
Grade A, and why
evo-nextjs-api-optimization 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.
What it actually says
evo-nextjs-api-optimization
Optimizes Next.js API routes by:
- Removing artificial delays (setTimeout in production)
- Parallelizing sequential awaits with Promise.all
- Adding caching headers (Cache-Control)
- Optimizing data fetching patterns
Key Patterns
Sequential Awaits → Promise.all
Anti-pattern:
const user = await fetchUser();
const products = await fetchProducts();
const reviews = await fetchReviews();
Fix:
const [user, products, reviews] = await Promise.all([
fetchUser(),
fetchProducts(),
fetchReviews(),
]);
Artificial Delays
Remove await new Promise(resolve => setTimeout(...)) from production routes.
Cache-Control Headers
Add appropriate Cache-Control headers to API responses.
Usage
import sys
sys.path.insert(0, '/app/environment/skills/evo-nextjs-api-optimization/scripts')
from utils import find_sequential_awaits, fix_sequential_awaits, find_artificial_delays, apply_api_fixes
# Analyze a file
issues = find_sequential_awaits('/app/src/app/page.tsx')
# Apply fixes
apply_api_fixes('/app/src/app/page.tsx')
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- yesterday First seen · 51 lines · 41 tokens per session scan A 9614fe4bf5b9
evo-nextjs-api-optimization is a skill published in the GitHub repository OpenLAIR/OpenSkill (90 stars, last pushed 2d ago), licensed Apache-2.0. It adds 41 tokens to every session and 305 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 2026-09-11.
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