peerd: Instructions file for Codex

AGENTS.md

peerd AGENTS.md is an instructions file for Codex, OpenCode from NotASithLord/peerd. It costs 8,106 tokens per session, scanned A, original, Apache-2.0.

Project-specific instructions for developing peerd, a browser extension that runs an AI agent in the user’s browser and can control tabs, inspect web pages, and run sandboxed commands.

In plain words
What is it for?
Use them when working on the browser extension, model providers, browser automation, the sandboxed command environment, or its store-readiness work.
Why use it?
They explain the project’s five modules, experimental status, supported model connections, and rules for changing the extension safely.

Instructions file for CodexOpenCode

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

This is NotASithLord/peerd's own configuration. It tells Codex and OpenCode how to work on peerd 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 peerd configures →

Reuse

Borrowing it

Nothing to install: this file belongs to NotASithLord/peerd. 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/NotASithLord/peerd/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/NotASithLord/peerd

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 peerd AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/notasithlord/peerd/agents-md"><img src="https://agentmods.dev/badge/instructions/notasithlord/peerd/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 8,106 This file is loaded in full into every session.
When invoked 8,106 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 $0.08106 $0.08106
Opus 5.5 $0.03242 $0.03242
Sonnet 5.5 $0.01621 $0.01621
Haiku 4.5 $0.00811 $0.00811

Measured 1mo ago against content hash f1bac80a01ca, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

peerd 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 1mo 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

AGENTS.md · 512 lines

How it starts

The opening of the file, as written. The whole thing — 512 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — peerd

Persistent project context for Codex. Read this first on every session. Equivalent to OpenCode's AGENTS.md pattern.


What peerd is

A browser-native AI agent harness, shipped as a Chrome/Firefox extension. The agent runs entirely in the user's browser. It talks to a model API directly (BYOK — bring your own key), drives the browser's tabs and DOM, and can run shell commands in a sandboxed Linux VM compiled to WebAssembly. No backend, no telemetry, no account.

peerd is 0.x — experimental beta (breaking changes likely; no "V1" commitment — versions stay 0.x until the surface stabilizes). The initial feature buildout is complete and integrated; current work is store-readiness polish and field hardening. Stack: Manifest V3, Chrome and Firefox (via webextension-polyfill), vanilla JS, no build step.


The codebase is five modules

Each maps to one letter and color in the brand wordmark:

Letter Color Module Role
p cyan peerd-provider/ Model adapters (Anthropic, OpenRouter, OpenAI, Z.ai GLM keyed; Ollama and the on-device WebGPU runner keyless - registry.js is the live list)
e red peerd-egress/ Security: vault, allowlist (safeFetch), denylist, audit
e amber peerd-engine/ Execution instances - Sandboxes. FOUR kinds run in their own visible tab: WebVMs (CheerpX Linux), Notebooks (sealed JS worker + OPFS), Pods, Apps (opaque-origin iframe). A fifth, the headless worker (script), runs the Notebook's sealed worker offscreen with no tab - the agent's own quick compute, and the only kind with no registry because it persists no instances. Also here: browser-native Git (repository/, exported from index.js). The sandbox is the isolate; a tab is one way to host it (taxonomy in registry-factory.js).
r green peerd-runtime/ Agent loop, tools + per-environment actors (message_actor), sessions, profiles, skills, memory, permissions (Plan/Act), goal mode (autonomous loop), composer, cost, transfer, voice, clock, web tool policy
d magenta peerd-distributed/ The dweb. An opt-in P2P base network (offscreen mesh + DHT + gossip), did:key identity, signed content addressing, the dwapp bridge, and a peer-to-peer app store that users AND the agent build, share, and run dwapps on. Chrome preview only until Firefox has a mesh host.

Read the full file on GitHub · 512 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. 1mo ago Changed f1bac80a01ca
  2. 1mo ago Changed · +2 lines · -13 tokens per session 2e098d6e6b41
  3. 1mo ago Changed · +6 lines · +150 tokens per session 030189283b14
  4. 2mo ago First seen · 504 lines · 7,969 tokens per session scan A d47658fda440

Subscribe to this mod's changes

peerd AGENTS.md is an instructions file published in the GitHub repository NotASithLord/peerd (425 stars, last pushed yesterday), licensed Apache-2.0. It adds 8,106 tokens to every session, about $0.0324 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

peerd AGENTS.md compared with instructions from other repositories

peerd AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
peerd AGENTS.mdNotASithLord/peerdInstructions file425yesterdayApache-2.0A8,106Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, 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