opencode-plusplus AGENTS.md

A set of instructions for coding agents working in a project. It explains the project's rules, usual workflow, entry points, and checks to run.

In plain words
What is it for?
Use it to guide an agent through a task, inspect generated task context, run project checks, and avoid committing secrets or generated files.
Why use it?
It gives the agent a shared starting point and helps prevent edits that ignore the source code, project conventions, or required checks.

Instructions file for CodexOpenCode

Install

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.

agentmods
npx agentmods add instructions/whut09/opencode-plusplus/agents-md
Clone the repo
git clone --depth 1 https://github.com/whut09/opencode-plusplus

Made for: Codex, OpenCode.

Per session 1,250 This file is loaded in full into every session.
When invoked 1,250 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.01250 $0.01250
Opus 5 $0.00625 $0.00625
Sonnet 5 $0.00250 $0.00250
Haiku 4.5 $0.00125 $0.00125

Measured yesterday against content hash a331cdc682da, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

opencode-plusplus 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 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.

AGENTS.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Guide

Generated Agent Guide

L0 operating rules. Keep this file loaded by default; load deeper context only when the task requires it.

Must-Read Rules

  • Inspect relevant source files before behavior-changing edits; generated summaries are not a source-of-truth replacement.
  • Before finishing, run the relevant detected checks: npm run build, npm run check, npm run lint, npm run format, npm run format:check, npm run prepublishOnly, npm run test.
  • Do not commit secrets, local config, dependency folders, or generated build output such as opencode-plusplus.local.yml, API keys, node_modules/, dist/, or coverage artifacts.
  • Preserve existing project conventions and command patterns unless the source code clearly requires a change.

Default Workflow

  • Read AGENTS.md only before the task is concrete.
  • Agent-led handoff: run opencode-plusplus run "<task>" . or inspect .agent-context/runs/<task-id>/; this writes context and boundaries but does not execute an agent.
  • Harness-led executor flow: run opencode-plusplus orchestrate "<task>" . --executor mock|opencode|mimocode --executor-command "<command with {prompt}>" --max-loops 3 --checkpoint git-worktree when OpenCode++ should own multi-loop gates.
  • Do not load the full .agent-context/ directory unless L1/L2 context is insufficient.
  • Prefer source files over generated summaries for behavior, API, and test decisions.

Project Entrypoints

  • Entrypoint: src/cli/index.ts
  • Entrypoint: src/mcp/server.ts
  • Anchor: src/core/freshness.ts - 9 exports, 57 symbols
  • Anchor: src/harness/control-plane/loop-controller.ts - 10 exports, 60 symbols
  • Anchor: src/harness/control-plane/orchestrator.ts - 12 exports, 132 symbols

Read the full file on GitHub · 82 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. yesterday First seen · 82 lines · 1,250 tokens per session scan A a331cdc682da

Subscribe to this mod's changes

opencode-plusplus AGENTS.md is an instructions file published in the GitHub repository whut09/opencode-plusplus (111 stars, last pushed 4d ago), licensed MIT. It adds 1,250 tokens to every session, about $0.0063 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 2026-08-30.