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.
npx agentmods add instructions/sitegpt/agent-skills/agents-mdgit clone --depth 1 https://github.com/sitegpt/agent-skillsWrote 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.
[](https://agentmods.dev/instructions/sitegpt/agent-skills/agents-md)<a href="https://agentmods.dev/instructions/sitegpt/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/sitegpt/agent-skills/agents-md.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00749 | $0.00749 |
| Opus 5 | $0.00375 | $0.00375 |
| Sonnet 5 | $0.00150 | $0.00150 |
| Haiku 4.5 | $0.00075 | $0.00075 |
Grade A, and why
agent-skills 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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Guidance for AI coding agents working in this repository.
Overview
This repository contains official SiteGPT skills for AI agents. Skills follow the Agent Skills format used by the skills CLI and skills.sh.
Structure
skills/
{skill-name}/
SKILL.md
commands/ (optional)
playbooks/ (optional)
Commands
npm test
npx skills add . --list
Run npm test before committing changes.
Skill Rules
SKILL.mdmust include YAML frontmatter withname,description,license, andmetadata.version.- The
namemust match the skill directory name. - Use lowercase kebab-case skill names.
- The
descriptionis the trigger text agents see before loading the full skill, so include what the skill does and when to use it. - Keep
SKILL.mdfocused on agent behavior and core workflows. commands/andplaybooks/are optional. Use them only when a skill is large enough that splitting genuinely helps; otherwise a single self-containedSKILL.md(up to 1000 lines) is fine and avoids drift.- Do not include secrets, credentials, private customer data, or environment-specific tokens.
Source Of Truth For sitegpt-cli
The sitegpt-cli skill is synced, not authored here. Its canonical source is the SiteGPT product repo at public/agents/sitegpt-cli-skill.md (the file served at https://sitegpt.ai/agents/sitegpt-cli-skill.md and digest-verified there). To change this skill, edit it in the product repo, then copy the body here under this repo's frontmatter and bump the version. Do not edit skills/sitegpt-cli/SKILL.md directly or re-split it into commands//playbooks/ — that re-introduces the exact drift this consolidation removed.
Versioning
This repository uses manual releases.
package.json,.claude-plugin/plugin.json,.cursor-plugin/plugin.json, and the rootplugin.json(the Agent Plugins manifest) carry the RELEASE version and must match (validate-skills.mjschecks).- Each
SKILL.mdmetadata.versiontracks that skill's own content: bump it when the skill changes, leave it alone when it does not. A release version ahead of an unchanged skill's version is expected in a multi-skill repo. sitegpt-cliis the exception either way: its version follows its canonical source in the product repo (see above) and only moves on a sync.- Update
CHANGELOG.mdwhen making release commits. - Use release commit messages like
chore: release 0.1.2. - Create a matching Git tag such as
v0.1.2. - GitHub Releases are optional unless a packaged archive is needed.
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.
- 5d ago First seen · 71 lines · 749 tokens per session scan A 317d5bf70393
agent-skills AGENTS.md is an instructions file published in the GitHub repository sitegpt/agent-skills (0 stars, last pushed 12d ago), licensed MIT. It adds 749 tokens to every session, about $0.0037 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 2026-08-31.
Other instructions, from other repositories
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).