Borrowing it
Nothing to install: this file belongs to neverinfamous/db-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/neverinfamous/db-mcp/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/neverinfamous/db-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/neverinfamous/db-mcp/copilot-instructions)<a href="https://agentmods.dev/instructions/neverinfamous/db-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/neverinfamous/db-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/neverinfamous/db-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/neverinfamous/db-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 | $0.01088 | $0.01088 |
| Opus 5.5 | $0.00435 | $0.00435 |
| Sonnet 5.5 | $0.00218 | $0.00218 |
| Haiku 4.5 | $0.00109 | $0.00109 |
Grade A, and why
db-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 — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.
db-mcp — Copilot Code Review Context
Project Overview
db-mcp is a TypeScript MCP (Model Context Protocol) server for SQLite database integration. It offers 181 Native / 154 WASM tools with dual backends — native (better-sqlite3) for full performance and WASM (sql.js) for zero-dependency portability. Features include Code Mode (sandboxed JS execution), HTTP/SSE transport, OAuth 2.1, Tool Filtering, and Audit/Token Logging.
Stack: TypeScript, Vitest, Playwright (E2E), Zod schemas, better-sqlite3 (native), sql.js (WASM), Commander (CLI).
Note: For any CLI interactions involving Copilot, you must reference
gh copilotand NEVER the deprecatedgithub-copilot-cli.
Session Context
Before starting work on this project, read memory://briefing/db-mcp from the memory-journal-mcp server for real-time context:
- Recent journal entries — what was just worked on by the development agent
- GitHub status — open issues, PRs, CI status, milestones
- Workflow runs — recent CI/CD results
- Copilot review summaries — your own recent review findings
For detailed session handoff context, search for entries tagged session-summary — these contain end-of-session notes from the development agent.
If you find issues during code review, use create_entry with tag copilot-finding to record them for the development agent to see in their next session briefing.
Coding Standards
Naming
- Files and folders: Always kebab-case (
database-adapter.ts,tool-filter.ts) - Never PascalCase or camelCase for filenames
Modularity
- File size limit: Source files stay under ~500 lines
- Split pattern:
foo.ts→foo/directory with sub-modules +foo/index.tsbarrel re-export - Logical grouping: Split by functional cohesion, not arbitrary line counts
Type Safety
- Strict TypeScript —
tsconfig.jsonenforces strict mode - Never use
eslint-disableto evade standards - Never use
any— useunknownand narrow with type guards - Never use
astype assertions — usesatisfiesoperator or strict type guards - Never use
@ts-ignoreor@ts-expect-error— fix the underlying type issue - Zod schemas for all tool input validation at system boundaries
- Union types over enums — use
type Status = "active" | "inactive"instead ofenum
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 · 104 lines · 1,088 tokens per session scan A 5a800e532954
db-mcp copilot-instructions.md is an instructions file published in the GitHub repository neverinfamous/db-mcp (13 stars, last pushed 1mo ago), licensed MIT. It adds 1,088 tokens to every session, about $0.0044 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.
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