agentmods.dev

sx: Instructions file for Codex

AGENTS.md

sx AGENTS.md is an instructions file for Codex, OpenCode from sleuth-io/sx. It costs 824 tokens per session, scanned A, original, Apache-2.0.

A repository guide stored in AGENTS.md for the sx command-line tool, including its commands, technology choices, and rules for checking work before reporting it complete.

In plain words
What is it for?
It helps agents work on the sx Go codebase and run the required build, test, formatting, lint, and pre-release checks.
Why use it?
It gives a coding agent the project's local rules, so changes are formatted, tested, linted, and built before they are called finished.

Instructions file for CodexOpenCode

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

This is sleuth-io/sx's own configuration. It tells Codex and OpenCode how to work on sx 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 sx configures →

not rated 315repo +5 yesterday A scan 824 tokens original Apache-2.0
View source ↗ sleuth-io/sx sleuth-io.github.io
Reuse

Borrowing it

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

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 sx AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/sleuth-io/sx/agents-md"><img src="https://agentmods.dev/badge/instructions/sleuth-io/sx/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 824 This file is loaded in full into every session.
When invoked 824 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 $0.00824 $0.00824
Opus 5.5 $0.00330 $0.00330
Sonnet 5.5 $0.00165 $0.00165
Haiku 4.5 $0.00082 $0.00082

Measured 1mo ago against content hash 1a08cc55e53d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sx 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.

AGENTS.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

sx - Coding Agent Guide

Your team's private npm for AI assets - skills, MCP configs, commands, and more.

Quick Commands

make build          # Build binary to ./dist/sx
make test           # Run tests
make format         # Format code
make lint           # Run linter
make prepush        # Format + lint + test + build (run before claiming done)

Before Reporting Work Complete

ALWAYS run make prepush before claiming a task is finished. CI runs format, lint, tests, and build — if any of those fail locally, don't tell the user the work is done.

Testing Local Changes

After making code changes, build and test with:

make build && ./dist/sx <command>

Tech Stack

  • Go 1.25+
  • cobra (CLI framework)
  • TOML (config format)

Key Specifications

  • Vault Spec - Vault structure and management
  • Manifest Spec - sx.toml format (source of truth)
  • Lock Spec - Per-user resolved lock file format
  • Scoping - Overview of every install scope (org/repo/path/team/user/bot), links to per-scope docs
  • Permissions / RBAC - github vault: who can set scope (org-admins) and who can edit a skill (team-scope membership)
  • Vault copy - sx vault copy cross-vault migration (assets, teams, bots, scopes, audit, usage)
  • Synced folders - Shared path vaults inside Dropbox/Drive/OneDrive/iCloud folders
  • Plugins - Exposing vaults as Claude Code / Codex plugin marketplaces
  • Orgs - Org-scoped (global) installs
  • Repos - Repo and path-scoped installs (monorepo patterns)
  • Teams - Team management and team-scoped installs
  • Users - Single-user installs and self-only restriction
  • Bots - Bot identities and bot-scoped installs
  • Audit log - Mutation audit trail format and queries
  • Usage analytics - sx stats dashboard and event format
  • Metadata Spec - Asset metadata format and fields
  • MCP Spec - MCP server tools (query)
  • Environment Variables - SX_CONFIG_DIR, SX_CACHE_DIR, and isolation recipes
  • GitHub Actions - Installing from a private vault in CI (deploy keys, SX_SSH_KEY, SX_BOT)

Read the full file on GitHub · 80 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 First seen · 80 lines · 824 tokens per session scan A 1a08cc55e53d

Subscribe to this mod's changes

sx AGENTS.md is an instructions file published in the GitHub repository sleuth-io/sx (315 stars, last pushed yesterday), licensed Apache-2.0. It adds 824 tokens to every session, about $0.0033 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 2026-09-30.

DevOps and cloudTestingagentsaianthropicclaudeclideveloper-tools
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