opencode-cache-hit: Instructions file for Codex

AGENTS.md

opencode-cache-hit AGENTS.md is an instructions file for Codex, OpenCode from zhumengzhu/opencode-cache-hit. It costs 2,382 tokens per session, scanned A, original, MIT.

A project guide for OpenCode Cache Hit, a sidebar plug-in for the OpenCode terminal interface that shows cache hit rate, tokens, cost, and totals from child sessions.

In plain words
What is it for?
Use it when maintaining the sidebar, its optional JSONL call timeline, token-speed information, or related English and Chinese documentation.
Why use it?
It helps coding agents understand the project’s purpose, documentation, commands, and code conventions before making changes.

Instructions file for CodexOpenCode

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

This is zhumengzhu/opencode-cache-hit's own configuration. It tells Codex and OpenCode how to work on opencode-cache-hit 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 opencode-cache-hit configures →

Reuse

Borrowing it

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

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.

agentmods badge for opencode-cache-hit AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/zhumengzhu/opencode-cache-hit/agents-md/github.svg)](https://agentmods.dev/instructions/zhumengzhu/opencode-cache-hit/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/zhumengzhu/opencode-cache-hit/agents-md"><img src="https://agentmods.dev/badge/instructions/zhumengzhu/opencode-cache-hit/agents-md/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 opencode-cache-hit AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/zhumengzhu/opencode-cache-hit/agents-md"><img src="https://agentmods.dev/badge/instructions/zhumengzhu/opencode-cache-hit/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,382 This file is loaded in full into every session.
When invoked 2,382 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 $0.02382 $0.02382
Opus 5.5 $0.00953 $0.00953
Sonnet 5.5 $0.00476 $0.00476
Haiku 4.5 $0.00238 $0.00238

Measured 16d ago against content hash fe4be46fc02a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

opencode-cache-hit 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 16d 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 · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — maintainer & AI assistant guide

Instructions for humans and coding agents working in opencode-cache-hit. End-user docs: README.md · README.zh-CN.md.

Project purpose

OpenCode TUI sidebar plugin: cache hit rate, tokens, cost, with sub-agent (child session) rollup. Optional per-call JSONL timeline (timeline.enabled).

Not a fork of opencode-visual-cache. UI patterns and src/tui-panel/ are heavily inspired by visual-cache; product focus differs (see README comparison table).

Documentation map

Topic English 中文
Users README.md README.zh-CN.md
Architecture docs/en/design.md docs/zh-CN/design.md
Timeline / JSONL docs/en/timeline.md docs/zh-CN/timeline.md
Token Speed docs/en/token-speed.md docs/zh-CN/token-speed.md
TTFT Hybrid docs/en/ttft-hybrid.md docs/zh-CN/ttft-hybrid.md
TTFT Troubleshooting docs/en/ttft-troubleshooting.md docs/zh-CN/ttft-troubleshooting.md
Dynamic pricing (plan) — docs/zh-CN/dynamic-pricing-plan.md
TUI panel src/tui-panel/README.md src/tui-panel/README.zh-CN.md
Migration plan docs/en/frontend-migration-plan.md docs/zh-CN/frontend-migration-plan.md
Contributing / npm CONTRIBUTING.md —
Index docs/README.md

Commands

bun test          # full unit + module-load smoke
bun run check     # bun test + tsc --noEmit (type-check via tsconfig.json)
bun run build     # emit dist/tui.js (the published ./tui entry)

Read the full file on GitHub · 84 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. 16d ago Changed · +5 lines · +696 tokens per session fe4be46fc02a
  2. 1mo ago Changed · +2 lines · +164 tokens per session 73015379f3b2
  3. 2mo ago First seen · 77 lines · 1,522 tokens per session scan A 0f4c16ff1d70

Subscribe to this mod's changes

opencode-cache-hit AGENTS.md is an instructions file published in the GitHub repository zhumengzhu/opencode-cache-hit (36 stars, last pushed 7d ago), licensed MIT. It adds 2,382 tokens to every session, about $0.0095 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.

Related

opencode-cache-hit AGENTS.md compared with instructions from other repositories

opencode-cache-hit AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
opencode-cache-hit AGENTS.mdzhumengzhu/opencode-cache-hitInstructions file367d agoMITA2,382Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode