peerd AGENTS.md

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

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/notasithlord/peerd/agents-md
Clone the repo
git clone --depth 1 https://github.com/NotASithLord/peerd

Made for: Codex, OpenCode.

Per session 7,969 This file is loaded in full into every session.
When invoked 7,969 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 $0.07969 $0.07969
Opus 5 $0.03985 $0.03985
Sonnet 5 $0.01594 $0.01594
Haiku 4.5 $0.00797 $0.00797

Measured 2d ago against content hash d47658fda440, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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 · 504 lines

How it starts

The opening of the file, as written. The whole thing — 504 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, and keyless Ollama shipped; local WebGPU gated on the resident engine — registry.js is the live list)
e red peerd-egress/ Security: vault, allowlist (safeFetch), denylist, audit
e amber peerd-engine/ Execution instances — Sandboxes. Three kinds run in their own visible tab: WebVMs (CheerpX Linux), Notebooks (sealed JS worker + OPFS), Apps (opaque-origin iframe). A fourth, the headless worker (script), runs the Notebook's sealed worker offscreen with no tab — the agent's own quick compute. The sandbox is the isolate; a tab is one way to host it (taxonomy in the peerd-engine/ code).
r green peerd-runtime/ Agent loop, tools + per-environment actors (message_actor), sessions, profiles, skills, memory, permissions (Plan/Act), review, goal mode (autonomous loop), composer, cost, transfer, voice, clock, web tool policy
d magenta peerd-distributed/ The dweb. An always-on 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 · 504 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. 2d 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 (399 stars, last pushed 3d ago), licensed Apache-2.0. It adds 7,969 tokens to every session, about $0.0398 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.