agentmods.dev

A-complete-AI-Agent-Instruction-Library: Skill for Cursor

.cursor/skills/fastapi-nextjs-stack/SKILL.md

fastapi-nextjs-stack is a skill for Cursor from Udhayaboopathi/A-complete-AI-Agent-Instruction-Library. It costs 77 tokens per session (319 once invoked), scanned A, original, MIT.

A set of project instructions for building and maintaining an application with FastAPI, Next.js, PostgreSQL, and Traefik. FastAPI handles the backend, Next.js handles the web interface, PostgreSQL stores data, and Traefik routes web traffic.

In plain words
What is it for?
Use it when working on database deployments, FastAPI modules, Next.js App Router features, security for public changes, or this specific application stack.
Why use it?
It keeps database, backend, security, and frontend changes in a defined order and pauses before changes that could affect another product or shared service.

Skill for Cursor

Written for Cursor: installed under .cursor/.

This is Udhayaboopathi/A-complete-AI-Agent-Instruction-Library's own configuration. It tells Cursor how to work on A-complete-AI-Agent-Instruction-Library itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything A-complete-AI-Agent-Instruction-Library configures →

not rated 1repo changed 22d ago A scan 77 tokens original MIT
View source ↗ Udhayaboopathi/A-complete-AI-Agent-Instruction-Library
Reuse

Borrowing it

Nothing to install: this file belongs to Udhayaboopathi/A-complete-AI-Agent-Instruction-Library. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Udhayaboopathi/A-complete-AI-Agent-Instruction-Library/main/.cursor/skills/fastapi-nextjs-stack/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Udhayaboopathi/A-complete-AI-Agent-Instruction-Library

Made for: Cursor.

Wrote 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.

agentmods badge for fastapi-nextjs-stack

README.md
[![agentmods](https://agentmods.dev/badge/skills/udhayaboopathi/a-complete-ai-agent-instruction-library/fastapi-nextjs-stack/github.svg)](https://agentmods.dev/skills/udhayaboopathi/a-complete-ai-agent-instruction-library/fastapi-nextjs-stack)
Your own site
<a href="https://agentmods.dev/skills/udhayaboopathi/a-complete-ai-agent-instruction-library/fastapi-nextjs-stack"><img src="https://agentmods.dev/badge/skills/udhayaboopathi/a-complete-ai-agent-instruction-library/fastapi-nextjs-stack/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.

agentmods 80×15 button for fastapi-nextjs-stack

Your own site · 80×15
<a href="https://agentmods.dev/skills/udhayaboopathi/a-complete-ai-agent-instruction-library/fastapi-nextjs-stack"><img src="https://agentmods.dev/badge/skills/udhayaboopathi/a-complete-ai-agent-instruction-library/fastapi-nextjs-stack.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 319 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00077 $0.00319
Opus 5.5 $0.00031 $0.00128
Sonnet 5.5 $0.00015 $0.00064
Haiku 4.5 $0.00008 $0.00032

Measured 22d ago against content hash e4112435a45d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fastapi-nextjs-stack 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 22d 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.

.cursor/skills/fastapi-nextjs-stack/SKILL.md · 32 lines

What it actually says

FastAPI + Next.js Stack

Read Skill/FASTAPI_NEXTJS_STACK.md first and follow it exactly.

Required reads (this order)

  1. Skill/FASTAPI_NEXTJS_STACK.md
  2. Database/DATABASE_STRUCTURE.md
  3. Backend/FASTAPI_ORM_STRUCTURE.md
  4. Frontend/NEXTJS_FRONTEND_STRUCTURE.md
  5. Security/SECURITY_LAYER.md

Confirm in four sentences (database deploy, backend modules, frontend feature folder, and secret-safe BFF/auth boundary), then continue with the user's task. Never expose backend tokens or shared signing keys to browser code.

Work order

database/ (diff → deploy → in sync) → backend/ → security if public → frontend/

Cross-product stop

If a change would affect another product or another SaaS (shared DB, API, auth, tenants), stop and tell the user before editing or deploying. Use the CROSS-PRODUCT IMPACT block in FASTAPI_NEXTJS_STACK.md.

Changes

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.

  1. 22d ago Changed e4112435a45d
  2. 2mo ago First seen · 32 lines · 77 tokens per session scan A cf362a1a2d8a

Subscribe to this mod's changes

fastapi-nextjs-stack is a skill published in the GitHub repository Udhayaboopathi/A-complete-AI-Agent-Instruction-Library (1 stars, last pushed 23d ago), licensed MIT. It adds 77 tokens to every session and 319 once invoked, about $0.0003 per session on Opus 5.5. 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.

Backend and APIsFrontend
Related

fastapi-nextjs-stack compared with skills from other repositories

fastapi-nextjs-stack next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
fastapi-nextjs-stackUdhayaboopathi/A-complete-AI-Agent-Instruction-LibrarySkill123d agoMITA77Cursor
mem0-oss-to-platformmem0ai/mem0Skill68k2d agoApache-2.0A217Claude Code, Codex
azure-mgmt-botservice-dotnetmicrosoft/skillsSkill3.2kyesterdayMITA78Claude Code
fastapi-router-pymicrosoft/skillsSkill3.2kyesterdayMITA46Claude Code
dev-runtimelangwatch/langwatchSkill5.0kyesterdayApache-2.0A172Claude Code
api-designericrisco/rsc-harnessSkill5032d agoMITA105Claude Code, Codex
migrate-segw-to-raparc-mcp/arc-1Skill252yesterdayMITA106Claude Code