freddie: Instructions file for Codex

AGENTS.md

freddie AGENTS.md is an instructions file for Codex, OpenCode from AnEntrypoint/freddie. It costs 2,386 tokens per session, scanned A, original, MIT.

A project instruction file for Freddie, an AI coding assistant with its own session, workflow, settings, and extension systems.

In plain words
What is it for?
Use it to guide Freddie code changes, choose between workflow tools and direct calls, and avoid reimplementing its underlying systems.
Why use it?
It explains how agents should work in the repository and which existing components they must use or leave alone.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

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 freddie AGENTS.md

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.

agentmods 80×15 button for freddie AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/anentrypoint/freddie/agents-md"><img src="https://agentmods.dev/badge/instructions/anentrypoint/freddie/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,386 This file is loaded in full into every session.
When invoked 2,386 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 $0.02386 $0.02386
Opus 5.5 $0.00954 $0.00954
Sonnet 5.5 $0.00477 $0.00477
Haiku 4.5 $0.00239 $0.00239

Measured 12d ago against content hash 81b786b62829, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

freddie 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 12d 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 · 89 lines

How it starts

The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Freddie is a plugin-based agent harness on the Cordis framework layer (framework/): everything is a plugin. Read docs/architecture.md before changing packages/; documentation rules: docs/AGENTS.md.

Pre-release stance: foundation over blast radius

Remove this section at the first tagged release. Prefer the correct foundation over compatibility shims; rename or repackage freely and update every reference together. Backends reject old on-disk formats: SQLite uses monotonic SCHEMA_VERSION; freddie-session keeps SESSION_FORMAT_VERSION at 0, with no compatibility promise.

Repository layout

framework/ is the first-party Cordis layer (divergence log). packages/<group>/<pkg>/ holds @freddie/freddie-* workspaces (package map). native/ (landlock addon), examples/ (runnable leaves), .agents/ (Agent Notes), docs/ (catalogs), scripts/ (gates).

Commands

pnpm install (node ^22.19 || >=24); pnpm run publint (publish shape); pnpm freddie --profile headless "task", pnpm run demo:cordis and demo:acp need DEEPSEEK_API_KEY. Buildless: packages ship src/**/*.js with no build, clean or typecheck step (development.md).

Host sandbox failures

  • With approvals disabled or unrestricted filesystem access, run required commands without a sandbox-permission field; any resulting failure is ordinary command evidence.
  • In a confined host, when gh, pnpm or generator commands fail on sandbox-blocked credentials, network, IPC, file watching or nested sandbox-exec, retry unchanged with the narrowest host escalation before diagnosing authentication or project failure.
  • Require sandbox evidence; never bypass a genuine failure or the product sandbox under test.

Verify before pushing

  • No automated suite (why): verify by exhaustive manual execution against the real running system, in the same turn and PR. Run the real code path against real state, read the real output, and re-derive the check from the request's own words. A diff's claim about itself is not evidence.
  • Match evidence to the surface: live boot (pnpm freddie or the relevant app entry point) for behavior; pnpm run publint for package-shape or publish-surface drift.
  • Run what the change touches; never every check for every change.

Read the full file on GitHub · 89 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. 12d ago Changed · +4 lines · -169 tokens per session 81b786b62829
  2. 21d ago Changed · +38 tokens per session 8c81d9821011
  3. 25d ago Changed · +8 lines · +393 tokens per session 93e9a0c42035
  4. 1mo ago Changed · -61 lines · -1,077 tokens per session 3d6631858373
  5. 1mo ago Changed · +3 lines · +153 tokens per session 9ee5463a37d1
  6. 1mo ago Changed · -391 lines · -16,705 tokens per session scan D → A 9d7ef7648329
  7. 1mo ago First seen · 526 lines · 19,753 tokens per session scan D c9a276c8ceff

Subscribe to this mod's changes

freddie AGENTS.md is an instructions file published in the GitHub repository AnEntrypoint/freddie (1 stars, last pushed 5d ago), licensed MIT. It adds 2,386 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 2026-08-31.

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