Borrowing it
Nothing to install: this file belongs to aiminnovations/mongodb-mcp-juniper. 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/aiminnovations/mongodb-mcp-juniper/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/aiminnovations/mongodb-mcp-juniperWrote 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/aiminnovations/mongodb-mcp-juniper/copilot-instructions)<a href="https://agentmods.dev/instructions/aiminnovations/mongodb-mcp-juniper/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/aiminnovations/mongodb-mcp-juniper/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/aiminnovations/mongodb-mcp-juniper/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/aiminnovations/mongodb-mcp-juniper/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 | $0.00797 | $0.00797 |
| Opus 5.5 | $0.00319 | $0.00319 |
| Sonnet 5.5 | $0.00159 | $0.00159 |
| Haiku 4.5 | $0.00080 | $0.00080 |
Grade A, and why
mongodb-mcp-juniper 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 — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Project Overview
This project is a server implementing the MCP (Model Context Protocol) that allows users to interact with their MongoDB clusters and MongoDB Atlas accounts. It is built using TypeScript, Node.js and the official Anthropic @modelcontextprotocol/sdk SDK.
Folder Structure
/src: Contains the source code of the MCP Server./src/tools: Contains the implementation of MCP tools./src/tools/atlas/: Contains the implementation of MCP tools that are specific to MongoDB Atlas./src/tools/mongodb/: Contains the implementation of MCP tools that are specific to MongoDB clusters./src/resources: Contains the implementation of MCP Resources./tests: Contains the test code for the MCP Server./tests/accuracy: Contains the test code for the accuracy tests, that use different models to ensure that tools have reliable descriptions./tests/integration: Contains tests that start the MCP Server and interact with it to ensure that functionality is correct./tests/unit: Contains simple unit tests to cover specific functionality of the MCP Server.
Libraries and Frameworks
- Zod for message and schema validation.
- Express for the HTTP Transport implementation.
- mongosh NodeDriverServiceProvider for connecting to MongoDB.
- vitest for testing.
- @modelcontextprotocol/sdk for the protocol implementation.
Coding Standards
- For declarations, use types. For usage, rely on type inference unless it is not clear enough.
- Always follow the eslint and prettier rule formats specified in
.eslint.config.jsand.prettierrc.json. - Use classes for stateful components and functions for stateless pure logic.
- Use dependency injection to provide dependencies between components.
- Avoid using global variables as much as possible.
- New functionality MUST be under test.
- Tools MUST HAVE integration tests.
- Tools MUST HAVE unit tests.
- Tools MAY HAVE accuracy tests.
Architectural Guidelines and Best Practices
Every agent connected to the MCP Server has a Session object attached to it. The Session is the main entrypoint for dependencies to other components. Any component that MUST be used by either a tool or a resource MUST be provided through the Session.
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 · 72 lines · 797 tokens per session scan A 97f60302eb28
mongodb-mcp-juniper copilot-instructions.md is an instructions file published in the GitHub repository aiminnovations/mongodb-mcp-juniper (0 stars, last pushed 1y ago), licensed Apache-2.0. It adds 797 tokens to every session, about $0.0032 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.
mongodb-mcp-juniper copilot-instructions.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| mongodb-mcp-juniper copilot-instructions.mdaiminnovations/mongodb-mcp-juniper | Instructions file | 0 | 1y ago | Apache-2.0 | A | 797 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
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| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| vscode model-prompts.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 2,022 | GitHub Copilot |