tanstack-agent-skills: Instructions file for Codex

AGENTS.md

tanstack-agent-skills AGENTS.md is an instructions file for Codex, OpenCode from DeckardGer/tanstack-agent-skills. It costs 1,283 tokens per session, scanned A, original, MIT.

Repository instructions for AI coding agents working on TanStack Agent Skills, including its folder layout and file conventions.

In plain words
What is it for?
Use them when editing or adding skills in the DeckardGer/tanstack-agent-skills repository.
Why use it?
They give an agent project-specific rules so it can follow the repository’s expected structure and skill format.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions CLAUDE.md; mentions AGENTS.md.

This is DeckardGer/tanstack-agent-skills's own configuration. It tells Codex and OpenCode how to work on tanstack-agent-skills 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 tanstack-agent-skills configures →

Reuse

Borrowing it

Nothing to install: this file belongs to DeckardGer/tanstack-agent-skills. 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/DeckardGer/tanstack-agent-skills/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/DeckardGer/tanstack-agent-skills

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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Per session 1,283 This file is loaded in full into every session.
When invoked 1,283 The same file — it is already loaded in full.
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 $0.01283 $0.01283
Opus 5.5 $0.00513 $0.00513
Sonnet 5.5 $0.00257 $0.00257
Haiku 4.5 $0.00128 $0.00128

Measured 2mo ago against content hash 20c2e3c6ca2b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tanstack-agent-skills AGENTS.md 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 2mo 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.

AGENTS.md · 212 lines

How it starts

The opening of the file, as written. The whole thing — 212 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Guidelines

This document provides instructions for AI coding agents working with the TanStack Agent Skills repository.

Repository Structure

tanstack-agent-skills/
├── skills/
│   ├── tanstack-query/
│   │   ├── SKILL.md
│   │   └── rules/
│   ├── tanstack-router/
│   │   ├── SKILL.md
│   │   └── rules/
│   ├── tanstack-start/
│   │   ├── SKILL.md
│   │   └── rules/
│   └── tanstack-integration/
│       ├── SKILL.md
│       └── rules/
├── README.md
├── AGENTS.md
└── CLAUDE.md

Skill Format

SKILL.md Structure

Each skill's main file uses YAML frontmatter:

---
name: skill-name
description: Brief description of what this skill covers
---

Followed by markdown sections:

  • When to Apply
  • Rule Categories by Priority
  • Quick Reference
  • How to Use

Rule File Naming

Rules use kebab-case with category prefixes:

  • qk- — Query keys
  • cache- — Caching
  • mut- — Mutations
  • err- — Error handling
  • pf- — Prefetching
  • inf- — Infinite queries
  • ssr- — SSR patterns
  • perf- — Performance
  • ts- — Type safety
  • org- — Organization
  • load- — Data loading
  • search- — Search params
  • nav- — Navigation
  • split- — Code splitting
  • preload- — Preloading
  • ctx- — Context
  • sf- — Server functions
  • sec- — Security
  • mw- — Middleware
  • auth- — Authentication
  • file- — File organization
  • deploy- — Deployment
  • setup- — Setup
  • flow- — Data flow

Rule File Structure

# rule-id: Rule Title

## Priority: CRITICAL | HIGH | MEDIUM | LOW

## Explanation

Why this pattern matters and what problem it solves.

## Bad Example

\`\`\`tsx
// Code showing the anti-pattern
// With comments explaining why it's bad
\`\`\`

## Good Example

\`\`\`tsx
// Code showing the recommended pattern
// With comments explaining the approach
\`\`\`

## Context

- When to apply this rule
- When to skip this rule
- Related considerations

Skill Activation

Skills should activate when agents detect:

tanstack-query

  • Data fetching code (useQuery, useMutation)
  • React Query imports
  • Cache management patterns
  • Server state handling

Read the full file on GitHub · 212 lines

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. 2mo ago First seen · 212 lines · 1,283 tokens per session scan A 20c2e3c6ca2b

Subscribe to this mod's changes

tanstack-agent-skills AGENTS.md is an instructions file published in the GitHub repository DeckardGer/tanstack-agent-skills (229 stars, last pushed 1mo ago), licensed MIT. It adds 1,283 tokens to every session, about $0.0051 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 2026-08-30.

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