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hecate: Instructions file for GitHub Copilot

.github/instructions/agent-docs.instructions.md

hecate agent-docs.instructions.md is an instructions file for GitHub Copilot from hecatehq/hecate. It costs 218 tokens per session, scanned A, original, MIT.

Repository guidance for keeping instructions for coding agents in one provider-neutral documentation folder, with small adapter files for specific tools.

In plain words
What is it for?
Use it when adding, moving, deleting, or updating agent instructions and skills in the repository.
Why use it?
It prevents the same rules from being copied into multiple tool-specific files and becoming inconsistent. It also defines checks for keeping the guidance organized and links working.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file. Also seen: mentions CLAUDE.md; mentions AGENTS.md.

This is hecatehq/hecate's own configuration. It tells GitHub Copilot how to work on hecate 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 hecate configures →

not rated 24repo +1 yesterday A scan 218 tokens original MIT
View source ↗ hecatehq/hecate hecate.sh
Reuse

Borrowing it

Nothing to install: this file belongs to hecatehq/hecate. 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/hecatehq/hecate/master/.github/instructions/agent-docs.instructions.md
Clone the repo
git clone --depth 1 https://github.com/hecatehq/hecate

Made for: GitHub Copilot.

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 hecate agent-docs.instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/hecatehq/hecate/agent-docs/github.svg)](https://agentmods.dev/instructions/hecatehq/hecate/agent-docs)
Your own site
<a href="https://agentmods.dev/instructions/hecatehq/hecate/agent-docs"><img src="https://agentmods.dev/badge/instructions/hecatehq/hecate/agent-docs/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 hecate agent-docs.instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/hecatehq/hecate/agent-docs"><img src="https://agentmods.dev/badge/instructions/hecatehq/hecate/agent-docs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 218 This file is loaded in full into every session.
When invoked 218 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 $0.00218 $0.00218
Opus 5.5 $0.00087 $0.00087
Sonnet 5.5 $0.00044 $0.00044
Haiku 4.5 $0.00022 $0.00022

Measured 2mo ago against content hash 8401137b7213, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

hecate agent-docs.instructions.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 2mo 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.

.github/instructions/agent-docs.instructions.md · 25 lines

What it actually says

Agent Guidance Docs

Agent guidance is provider-neutral. Keep docs-ai/ as the source of truth and use adapter files only to help a specific product discover that guidance.

Before editing this area, read:

  • docs-ai/core/agent-guidance.md
  • docs-ai/README.md
  • docs-ai/skills/README.md

Rules:

  • Do not add tracked .claude/ or .cursor/ guidance.
  • Keep CLAUDE.md as the compatibility shim importing AGENTS.md.
  • Keep GitHub Copilot files short; they must point to docs-ai/ rather than duplicating canonical skills or workflow rules.
  • When adding, moving, or deleting a skill, update docs-ai/skills/README.md.
  • Run just agent-docs-check, just docs-format-check, and just check-links when links change.
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. 2mo ago First seen · 25 lines · 218 tokens per session scan A 8401137b7213

Subscribe to this mod's changes

hecate agent-docs.instructions.md is an instructions file published in the GitHub repository hecatehq/hecate (24 stars, last pushed yesterday), licensed MIT. It adds 218 tokens to every session, about $0.0009 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.

Building agentsLLMWriting and docsaiai-gatewayai-runtimemcp-clientopentelemetry
Related

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