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nextjs-cache-handler: Instructions file for Codex

AGENTS.md

nextjs-cache-handler AGENTS.md is an instructions file for Codex, OpenCode from leejpsd/nextjs-cache-handler. It costs 496 tokens per session, scanned A, original, MIT.

Instructions for using a Redis-based cache with self-hosted Next.js 15 and 16 applications. Redis is a separate service that stores data for quick reuse, and Next.js is a framework for building web applications.

In plain words
What is it for?
Use them when configuring Redis caching, cache invalidation, clustered Redis, TLS connections, or multi-instance Next.js deployments outside Vercel.
Why use it?
They explain important differences between soft and hard cache updates and warn about deployment settings that can cause stale content, broken files, or incorrect results across servers.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is leejpsd/nextjs-cache-handler's own configuration. It tells Codex and OpenCode how to work on nextjs-cache-handler 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 nextjs-cache-handler configures →

not rated 6repo 2mo ago A scan 496 tokens original MIT
View source ↗ leejpsd/nextjs-cache-handler
Reuse

Borrowing it

Nothing to install: this file belongs to leejpsd/nextjs-cache-handler. 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/leejpsd/nextjs-cache-handler/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/leejpsd/nextjs-cache-handler

Made for: Codex, OpenCode.

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.

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README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/leejpsd/nextjs-cache-handler/agents-md"><img src="https://agentmods.dev/badge/instructions/leejpsd/nextjs-cache-handler/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 496 This file is loaded in full into every session.
When invoked 496 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 $0.00496 $0.00496
Opus 5.5 $0.00198 $0.00198
Sonnet 5.5 $0.00099 $0.00099
Haiku 4.5 $0.00050 $0.00050

Measured 2mo ago against content hash f19f7f2b812f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

nextjs-cache-handler 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 · 34 lines

What it actually says

@leejpsd/nextjs-cache-handler — notes for AI agents

Redis cache handler for self-hosted Next.js 15/16. Ships BOTH interfaces: cacheHandler (ISR, Next 15+16) and cacheHandlers ('use cache', Next >= 16.1.5). Not for Vercel-hosted apps.

Full agent guidance: skills/nextjs-redis-cache/SKILL.md in this package (also installable via npx skills add leejpsd/nextjs-cache-handler). Agent-executable setup: https://raw.githubusercontent.com/leejpsd/nextjs-cache-handler/main/setup-instructions/setup.md

Rules that prevent the most common mistakes

  1. revalidateTag(tag, "max") is SOFT = stale-while-revalidate: instant stale serve + background re-render, cross-instance convergence in ~1-2s. Brief stale content is BY DESIGN — not a bug. updateTag(tag) is HARD = delete + blocking regeneration. Requires version >= 0.3.3.
  2. cacheMaxMemorySize: 0 in next.config is mandatory for multi-instance correctness. Do not remove it.
  3. DEPLOYMENT_VERSION env must exist at RUNTIME (Docker runner stage). Missing → cross-deploy cache bleed / static chunk 404s.
  4. Redis Cluster needs hashTag: true; TLS via rediss:// URLs.
  5. Build-time ECONNREFUSED toward Redis is expected (build-phase gate) — only investigate if the build fails.
  6. Redis outages degrade to a bounded in-memory fallback with automatic reconnect (backoff 1s→30s). Do not wrap cache calls in extra try/catch.
  7. Wiring shape: two CJS wrapper files + require.resolve in next.config — see README "Quick start" or the setup URL above.

Entry points: /incremental (ISR), /cache-components ('use cache'), /client/redis, /client/ioredis (incl. cluster/sentinel), /ops (metric snapshot), /otel (OpenTelemetry emitter). API details: README.md and https://github.com/leejpsd/nextjs-cache-handler/blob/main/docs/api.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. 2mo ago First seen · 34 lines · 496 tokens per session scan A f19f7f2b812f

Subscribe to this mod's changes

nextjs-cache-handler AGENTS.md is an instructions file published in the GitHub repository leejpsd/nextjs-cache-handler (6 stars, last pushed 2mo ago), licensed MIT. It adds 496 tokens to every session, about $0.0020 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.

DatabasesRedis and cache
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nextjs-cache-handler AGENTS.md compared with instructions from other repositories

nextjs-cache-handler AGENTS.md next to 6 instructions from other repositories
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nextjs-cache-handler AGENTS.mdleejpsd/nextjs-cache-handlerInstructions file62mo agoMITA496Codex, OpenCode
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langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
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