Finding symbols, identifying callers, analyzing refactoring impact, gathering pull-request context, triaging errors, and preparing files for editing.

They reduce the need to search through many files manually when tracing calls, checking change impact, or understanding project structure.

How codegraph-ai/codegraph-rules-for-agents configures GitHub Copilot

Q: What is codegraph-rules-for-agents copilot-instructions.md?

Project instructions for using CodeGraph, a local map of a codebase that records how files and symbols relate to one another. They tell the agent which CodeGraph tools to use for common code tasks.

Reuse

Borrowing it

Nothing to install: this file belongs to codegraph-ai/codegraph-rules-for-agents. 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/codegraph-ai/codegraph-rules-for-agents/main/.github/copilot-instructions.md

Clone the repo

git clone --depth 1 https://github.com/codegraph-ai/codegraph-rules-for-agents

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/codegraph-ai/codegraph-rules-for-agents/copilot-instructions/github.svg)](https://agentmods.dev/instructions/codegraph-ai/codegraph-rules-for-agents/copilot-instructions)

Your own site

<a href="https://agentmods.dev/instructions/codegraph-ai/codegraph-rules-for-agents/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/codegraph-ai/codegraph-rules-for-agents/copilot-instructions/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/codegraph-ai/codegraph-rules-for-agents/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/codegraph-ai/codegraph-rules-for-agents/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 567 This file is loaded in full into every session.

When invoked 567 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.

Model	Per session	Once invoked
Fable 5.1	$0.00567	$0.00567
Opus 5.5	$0.00227	$0.00227
Sonnet 5.5	$0.00113	$0.00113
Haiku 4.5	$0.00057	$0.00057

Measured 2mo ago against content hash 35b09791eafd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codegraph-rules-for-agents copilot-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/copilot-instructions.md · 42 lines

How it starts

The opening of the file, as written. The whole thing — 42 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CodeGraph — local code intelligence

This project has CodeGraph installed — a persistent semantic code graph with 42 MCP tools. It resolves references, so "who calls X?" is a single tool call, not multi-file grep.

Top 5 tools (use these first)

When you need	Call this	NOT this
Who calls function X?	`codegraph_get_callers`	grep for the function name
What breaks if I change X?	`codegraph_analyze_impact`	reading every importing file
Context for editing a file	`codegraph_get_edit_context`	reading 5+ files manually
Find a symbol by name	`codegraph_symbol_search`	grep -r across the project
Module structure overview	`codegraph_get_module_summary`	ls + reading each file

URI format: file:///absolute/path. Use paths from symbol_search results directly. Compact mode: pass compact: true for shorter output when scanning.

Common workflows

PR review: codegraph_pr_context — one call gives blast radius, test gaps, stale docs, reviewers
Refactoring: symbol_search → analyze_impact → get_edit_context
Bug triage: search_by_error → get_callers → get_ai_context(intent: "debug")
Onboarding: get_module_summary → find_entry_points → get_call_graph

Decision rule

Structural question? (callers, deps, impact) → codegraph tools
Text question? (exact string, regex) → grep/read
Not sure? → Try codegraph_symbol_search first. Empty → run codegraph_reindex_workspace.

More tools

PR review: pr_context (blast radius, test gaps, stale docs, commit hint, reviewers) Navigation: get_callees, get_call_graph, get_dependency_graph, traverse_graph, find_by_imports, find_entry_points Quality: analyze_complexity, find_hot_paths, find_circular_deps, find_dead_imports Docs: index_markdown, search_docs, verify_design, design_gaps, generate_architecture_doc Memory: memory_store (pass agentSource: "copilot"), memory_search, memory_context

Read the full file on GitHub · 42 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.

2mo ago First seen · 42 lines · 567 tokens per session scan A 35b09791eafd

Subscribe to this mod's changes

codegraph-rules-for-agents copilot-instructions.md is an instructions file published in the GitHub repository codegraph-ai/codegraph-rules-for-agents (3 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 567 tokens to every session, about $0.0023 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.

codegraph-rules-for-agents copilot-instructions.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
codegraph-rules-for-agents copilot-instructions.mdcodegraph-ai/codegraph-rules-for-agents	Instructions file	3	5mo ago	Apache-2.0	A	567	GitHub Copilot
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next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

codegraph-rules-for-agents: Instructions file for GitHub Copilot