Borrowing it
Nothing to install: this file belongs to Siddhukaushik/slimdex-mcp. 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/Siddhukaushik/slimdex-mcp/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/Siddhukaushik/slimdex-mcpWrote 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/siddhukaushik/slimdex-mcp/copilot-instructions)<a href="https://agentmods.dev/instructions/siddhukaushik/slimdex-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/siddhukaushik/slimdex-mcp/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/siddhukaushik/slimdex-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/siddhukaushik/slimdex-mcp/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 | $0.01357 | $0.01357 |
| Opus 5.5 | $0.00543 | $0.00543 |
| Sonnet 5.5 | $0.00271 | $0.00271 |
| Haiku 4.5 | $0.00136 | $0.00136 |
Grade A, and why
slimdex-mcp 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.
How it starts
The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Slimdex Copilot Instructions
Use Slimdex first. The goal is the fewest tokens that still get the answer right.
Open with batch: [ index_repo, brief ]. brief gives repo shape, where
recent sessions dug, and saved conclusions checked against the index (✓ live,
⚠ stale); it works cold, building the index itself. index_repo is incremental —
re-run after your edits or a branch change, or searches answer confidently and
wrongly.
Find and read
| Need | Call | Knobs (defaults) |
|---|---|---|
| What is this repo | repo_map |
|
| How it works, per last session | digest_get |
flags files changed since |
| How an area works | context_pack "how X works" |
budget 6000, symbols 8, bodies 3 |
| Half-remembered name | search_symbols — index only, opens no file |
kind, limit 25, pathPrefix |
| Behaviour, not the name | search_intent |
|
| Where X is defined | find_definition |
|
| Definition + callers + imports at once | get_context |
include is OPT-IN — body/dependents NOT default; callerLimit 12, maxChars 12000 |
| Who uses X | find_references |
|
| Tests covering X | find_tests |
pathPrefix, limit |
| Map a file | outline_file (declarations) / get_file_skeleton (signatures; use over ~300 lines) |
|
| Bodies of X, Y, Z | get_symbol_context names:[...] |
maxLines 200, before/after, pathPrefix |
| Exact lines | read_lines |
|
| Literal text | search_code |
limit 20 + cursor to page, pathPrefix, regex, ignoreCase |
| Imports / importers / diagram | dep_graph mode:"imports"|"dependents"|"mermaid" |
root, depth 2, scope |
| Uncommitted changes | changed_files |
|
| What past sessions did | recap |
Symbol questions take symbol tools; search_code is for literals only. On an
ambiguous name use pathPrefix or path+line — don't read the candidates to
pick one. After a skeleton, follow through with get_symbol_context/read_lines
for just those spans; never widen to a whole file. context_pack orients — drop
to exact source after. batch runs up to 20 calls in one round-trip (no
nesting), but batching doesn't excuse a wide call.
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 · 100 lines · 1,357 tokens per session scan A 01d04485cc38
slimdex-mcp copilot-instructions.md is an instructions file published in the GitHub repository Siddhukaushik/slimdex-mcp (1 stars, last pushed 1mo ago), licensed MIT. It adds 1,357 tokens to every session, about $0.0054 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.
slimdex-mcp copilot-instructions.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| slimdex-mcp copilot-instructions.mdSiddhukaushik/slimdex-mcp | Instructions file | 1 | 1mo ago | MIT | A | 1,357 | GitHub Copilot |
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| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |