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ssd-ai: Instructions file for GitHub Copilot

.github/instructions/typescript-mcp-server.instructions.md

ssd-ai typescript-mcp-server.instructions.md is an instructions file for GitHub Copilot from ssdeanx/ssd-ai. It costs 1,760 tokens per session, scanned A, original, MIT.

Coding instructions for building Model Context Protocol (MCP) servers with TypeScript. MCP is a standard way for AI tools to connect to external data and actions.

In plain words
What is it for?
Use them when creating or updating TypeScript MCP servers, including their tools, resources, prompts, input and output schemas, and communication transports.
Why use it?
They give consistent guidance on choosing the TypeScript SDK, validating data, and handling local or web connections, reducing design mistakes during implementation.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is ssdeanx/ssd-ai's own configuration. It tells GitHub Copilot how to work on ssd-ai itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ssd-ai configures →

not rated 3repo 10mo ago A scan 1,760 tokens original MIT
View source ↗ ssdeanx/ssd-ai
Reuse

Borrowing it

Nothing to install: this file belongs to ssdeanx/ssd-ai. 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/ssdeanx/ssd-ai/main/.github/instructions/typescript-mcp-server.instructions.md
Clone the repo
git clone --depth 1 https://github.com/ssdeanx/ssd-ai

Made for: GitHub Copilot.

Wrote this? Show the measurements

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Per session 1,760 This file is loaded in full into every session.
When invoked 1,760 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01760 $0.01760
Opus 5.5 $0.00704 $0.00704
Sonnet 5.5 $0.00352 $0.00352
Haiku 4.5 $0.00176 $0.00176

Measured 1mo ago against content hash a3b081f30ef9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ssd-ai typescript-mcp-server.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 1mo 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.github/instructions/typescript-mcp-server.instructions.md · 229 lines

How it starts

The opening of the file, as written. The whole thing — 229 lines — stays where its author put it; the contents beside it link to each section on GitHub.

TypeScript MCP Server Development

Instructions

  • Use the @modelcontextprotocol/sdk npm package: npm install @modelcontextprotocol/sdk
  • Import from specific paths: @modelcontextprotocol/sdk/server/mcp.js, @modelcontextprotocol/sdk/server/stdio.js, etc.
  • Use McpServer class for high-level server implementation with automatic protocol handling
  • Use Server class for low-level control with manual request handlers
  • Use zod for input/output schema validation: npm install zod@3
  • Always provide title field for tools, resources, and prompts for better UI display
  • Use registerTool(), registerResource(), and registerPrompt() methods (recommended over older APIs)
  • Define schemas using zod: { inputSchema: { param: z.string() }, outputSchema: { result: z.string() } }
  • Return both content (for display) and structuredContent (for structured data) from tools
  • For HTTP servers, use StreamableHTTPServerTransport with Express or similar frameworks
  • For local integrations, use StdioServerTransport for stdio-based communication
  • Create new transport instances per request to prevent request ID collisions (stateless mode)
  • Use session management with sessionIdGenerator for stateful servers
  • Enable DNS rebinding protection for local servers: enableDnsRebindingProtection: true
  • Configure CORS headers and expose Mcp-Session-Id for browser-based clients
  • Use ResourceTemplate for dynamic resources with URI parameters: new ResourceTemplate('resource://{param}', { list: undefined })
  • Support completions for better UX using completable() wrapper from @modelcontextprotocol/sdk/server/completable.js
  • Implement sampling with server.server.createMessage() to request LLM completions from clients
  • Use server.server.elicitInput() to request additional user input during tool execution
  • Enable notification debouncing for bulk updates: debouncedNotificationMethods: ['notifications/tools/list_changed']
  • Dynamic updates: call .enable(), .disable(), .update(), or .remove() on registered items to emit listChanged notifications
  • Use getDisplayName() from @modelcontextprotocol/sdk/shared/metadataUtils.js for UI display names
  • Test servers with MCP Inspector: npx @modelcontextprotocol/inspector

Read the full file on GitHub · 229 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.

  1. 1mo ago First seen · 229 lines · 1,760 tokens per session scan A a3b081f30ef9

Subscribe to this mod's changes

ssd-ai typescript-mcp-server.instructions.md is an instructions file published in the GitHub repository ssdeanx/ssd-ai (3 stars, last pushed 10mo ago), licensed MIT. It adds 1,760 tokens to every session, about $0.0070 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.

Building agentsLanguagesTypeScriptmcpmcp-clientmcp-servermcp-serversmcp-tools
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