Borrowing it
Nothing to install: this file belongs to ashlesh-t/cognirepo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ashlesh-t/cognirepo/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/ashlesh-t/cognirepoWrote 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/ashlesh-t/cognirepo/copilot-instructions)<a href="https://agentmods.dev/instructions/ashlesh-t/cognirepo/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/ashlesh-t/cognirepo/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.
<a href="https://agentmods.dev/instructions/ashlesh-t/cognirepo/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/ashlesh-t/cognirepo/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00806 | $0.00806 |
| Opus 5 | $0.00403 | $0.00403 |
| Sonnet 5 | $0.00161 | $0.00161 |
| Haiku 4.5 | $0.00081 | $0.00081 |
Grade A, and why
cognirepo 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 8d 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 — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CogniRepo — GitHub Copilot Instructions
CogniRepo MCP tools are available. Use them before any native file exploration. Most valuable on codebases ≥ 15K LOC.
Session start (call in this order every session)
mcp_cognirepo_get_session_brief— architecture, hot symbols, index healthmcp_cognirepo_get_last_context— resume where last agent left off (cross-agent handoff)mcp_cognirepo_get_user_profile— user's interaction style; applyframing_hintsto ALL responsesmcp_cognirepo_get_error_patterns— past recurring errors; do not repeat them
Tool routing
| Task | Use first |
|---|---|
| Find where a function lives | mcp_cognirepo_lookup_symbol |
| Understand code or a query | mcp_cognirepo_context_pack |
| Find all callers of a function | mcp_cognirepo_who_calls |
| Past decisions or bugs | mcp_cognirepo_episodic_search |
| Architecture overview | mcp_cognirepo_architecture_overview |
| Exact string/token search | mcp_cognirepo_search_token |
| Semantic code search | mcp_cognirepo_semantic_search_code |
| Search documentation | mcp_cognirepo_search_docs |
| Symbol neighbourhood graph | mcp_cognirepo_subgraph |
| Module dependency tree | mcp_cognirepo_dependency_graph |
| Explain a recent change | mcp_cognirepo_explain_change |
| Store a memory or discovery | mcp_cognirepo_store_memory |
| Retrieve past memories | mcp_cognirepo_retrieve_memory |
| Record architectural decision | mcp_cognirepo_record_decision |
| Log an event or milestone | mcp_cognirepo_log_episode |
| Record an error encountered | mcp_cognirepo_record_error |
| Avoid repeating past errors | mcp_cognirepo_get_error_patterns |
| User states a preference | mcp_cognirepo_record_user_preference |
| List registered org repos | mcp_cognirepo_list_org_context |
| Search across all repos | mcp_cognirepo_org_wide_search |
| Repo dependency graph | mcp_cognirepo_org_dependencies |
| Trace symbol across services | mcp_cognirepo_cross_repo_traverse |
| Link two repos | mcp_cognirepo_link_repos |
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.
- 8d ago First seen · 60 lines · 806 tokens per session scan A d091035f0c4e
cognirepo copilot-instructions.md is an instructions file published in the GitHub repository ashlesh-t/cognirepo (14 stars, last pushed 5d ago), licensed MIT. It adds 806 tokens to every session, about $0.0040 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 2026-08-30.
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