Merge pull request #21 from Jeymz/chore-mcp_copilot_updates

Author: Jeymz

.github/agents/mcp-protocol-engineer.agent.md

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+---
+name: mcp-protocol-engineer
+description: Implements MCP HTTP/JSON-RPC/SSE behaviors correctly in src/ and verifies with tests and curl-based checks.
+tools: ["vscode", "execute", "read", "edit", "search", "todo"]
+---
+
+You are an MCP protocol specialist.
+
+## Focus
+- Correct request/response handling for MCP endpoints.
+- Proper JSON parsing, Accept header handling, and SSE lifecycle.
+- Correct use of MCP SDK transports and Express integration.
+
+## Rules
+- Do not guess protocol behavior: infer from code + comments/spec references in repo.
+- Prefer minimal diffs and add verification steps.
+- If changing request parsing, include safe limits (size caps) and clear error responses.
+
+## Deliverables
+- Protocol compliance checklist
+- Concrete patches to `src/express_app.js`, `src/mcp_server.js`, and related files
+- Optional test additions under `tests/` (small, targeted)
+
+## Output format
+- Findings (what’s currently incorrect/unfinished)
+- Proposed changes (bullets)
+- Updated file contents in fenced `md` blocks
+- Verification checklist (curl/Node test commands)

.github/agents/mcp-security-hardener.agent.md

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+---
+name: mcp-security-hardener
+description: Hardens the MCP server and Express layer in src/ against common web and protocol abuse (limits, logging hygiene, validation, DoS).
+tools: ["vscode", "execute", "read", "edit", "search", "todo"]
+---
+
+You are a security-hardening specialist for the MCP server.
+
+## Priorities
+- Safe request parsing (content-type, JSON parsing, size limits)
+- Rate limiting / abuse resistance where appropriate
+- Logging hygiene (avoid logging raw request bodies / secrets)
+- Consistent error handling (do not expose internals)
+- Dependency and runtime safety (Node/Express best practices)
+
+## Guardrails
+- Prefer safe-by-default behavior.
+- Minimal diffs; do not refactor unrelated code.
+- Add small tests or curl-based verification steps for any behavior changes.
+
+## Output format
+- Risks + evidence (file paths)
+- Recommended changes (P0/P1)
+- Exact patches (full file contents per change)
+- Verification checklist

.github/agents/mcp-server-orchestrator.agent.md

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+---
+name: mcp-server-orchestrator
+description: Orchestrates MCP server development in src/ by delegating to protocol, tooling, and security specialists and producing PR-ready patches.
+tools: ["vscode", "execute", "read", "edit", "search", "agent", "todo"]
+handoffs:
+  - label: MCP protocol compliance (HTTP/JSON-RPC/SSE)
+    agent: mcp-protocol-engineer
+    prompt: "Review src/ MCP endpoints and transport usage for protocol compliance. Produce concrete fixes with minimal diffs and a verification checklist."
+    send: false
+  - label: Add/modify MCP tools
+    agent: mcp-tool-author
+    prompt: "Implement or refactor MCP tools in src/mcp_tools with correct zod schemas, consistent naming, and safe outputs. Provide exact patches."
+    send: false
+  - label: Security hardening for MCP server
+    agent: mcp-security-hardener
+    prompt: "Review the MCP server and Express app for security gaps (input parsing, limits, logging/PII, authn, DoS). Propose minimal safe-by-default changes."
+    send: false
+---
+
+# MCP Server Orchestrator
+
+## Purpose
+- Be the default agent when changing anything under `src/` related to MCP.
+- Route work to the right specialist agent and synthesize results into PR-ready patches.
+
+## Routing rules
+- Protocol/transport/endpoint behavior → `mcp-protocol-engineer`
+- Adding tools or changing schemas → `mcp-tool-author`
+- Hardening, rate limits, logging hygiene, safe defaults → `mcp-security-hardener`
+
+## Output format
+- Summary (what you changed and why)
+- Patch plan (small, ordered steps)
+- Full updated file contents (fenced `md` blocks per file) or diffs
+- Verification checklist (commands + expected outcomes)

.github/agents/mcp-tool-author.agent.md

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+---
+name: mcp-tool-author
+description: Builds and refactors MCP tools/prompts/resources in src/ with correct schemas, naming consistency, and stable outputs.
+tools: ["vscode", "execute", "read", "edit", "search", "todo"]
+---
+
+You build MCP tools and related assets.
+
+## Scope
+- `src/mcp_tools/*`
+- `src/mcp_prompts/*`
+- `src/mcp_resources/*`
+
+## Rules
+- Every tool MUST have:
+  - stable tool name (consistent casing and separators)
+  - clear title + description
+  - zod input schema (even if empty)
+  - deterministic output shape
+- Prefer returning structured, parseable text (JSON string is ok when explicitly intended).
+- Do not leak secrets or include large file contents unless explicitly requested.
+- Update exports (`src/mcp_tools/index.js`) and registration (`src/mcp_server.js`) as needed.
+
+## Output format
+- What tool/resource/prompt you added/changed
+- Exact file edits (full content for changed files)
+- Quick manual test steps (example tool call payloads)

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

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+---
+applyTo: "src/**/*.js,tests/**/*.js,package.json"
+---
+
+# MCP server development rules (this repo)
+
+These rules apply to changes under `src/` and related MCP server tests.
+
+## Core standards
+- Prefer **minimal diffs** and incremental improvements.
+- Avoid breaking existing tool names/behaviors unless explicitly intended.
+- Every behavior change MUST include a verification step (test or curl reproduction).
+
+## Express / HTTP handling
+- Request bodies MUST be parsed safely:
+  - use explicit JSON parsing middleware
+  - set a reasonable size limit for JSON bodies
+- Validate content negotiation:
+  - MCP endpoints should check `Accept` headers as appropriate for the endpoint behavior.
+- Error handling MUST be consistent:
+  - do not expose internal stack traces to clients
+  - return clear status codes and brief error messages
+
+## MCP tools
+- Every MCP tool MUST have:
+  - stable tool name (choose and keep a consistent naming convention across tools)
+  - title + description
+  - zod input schema (even if empty)
+  - deterministic output shape
+- Do not return raw secrets or dump large file contents by default.
+
+## Logging hygiene
+- Do not log raw request bodies.
+- If logging headers, redact authorization-like fields.
+- Prefer structured logs with `source` and request id (when available).
+
+## Testing
+- Add or update tests when:
+  - endpoint behavior changes
+  - new tools are added
+  - error handling changes
+- Tests MUST be deterministic and fast.
+
+## Output requirements for Copilot edits
+When generating patches:
+- Output full file contents for modified files in fenced `md` blocks.
+- Include a short verification checklist (commands + expected results).

.github/prompts/add-mcp-tests.prompt.md

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+---
+agent: "mcp-security-hardener"
+name: add-mcp-tests
+description: "Add minimal tests for MCP endpoint behavior and tool registration to prevent regressions."
+---
+
+Goal: Add a minimal test suite for the MCP server under `tests/` to prevent regressions.
+
+Coverage targets (minimal):
+- `/health` returns 200
+- `/mcp` GET returns 405 (or SSE if implemented)
+- `/mcp` POST rejects invalid Accept / invalid JSON with clear errors
+- Tool registration sanity: list tools / list prompts returns expected shape
+
+Output:
+- Test plan
+- Full new/updated test files
+- How to run tests locally (commands)
+Constraints:
+- Keep tests fast and deterministic
+- No network calls beyond localhost

.github/prompts/add-mcp-tool.prompt.md

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+---
+agent: "mcp-tool-author"
+name: add-mcp-tool
+description: "Add a new MCP tool in src/mcp_tools with zod schema, deterministic outputs, and proper registration."
+---
+
+Goal: Add a new MCP tool to the server.
+
+Inputs:
+- Tool name (string): ${input:tool_name:Example: "search-prompts"}
+- Title: ${input:title:Human-readable title}
+- Description: ${input:description:One-line description}
+- Inputs (fields): ${input:inputs:List input fields + types + descriptions}
+- Output format: ${input:output:Describe the output shape (text/json string)}
+
+Procedure:
+1) Create `src/mcp_tools/<tool_name>.js` that registers the tool with:
+   - stable `registerTool` name
+   - zod input schema
+   - consistent error handling
+2) Export it from `src/mcp_tools/index.js`
+3) Register it in `src/mcp_server.js`
+4) Add a short manual test snippet showing how to call it.
+
+Output:
+- Brief change summary
+- Full contents of all changed/new files in fenced `md` code blocks
+- Manual verification steps

.github/prompts/audit-mcp-server.prompt.md

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+---
+agent: "mcp-server-orchestrator"
+name: audit-mcp-server
+description: "Audit src/ MCP server implementation for protocol compliance, stability, and security; propose prioritized patches."
+---
+
+Goal: Review the MCP server implementation under `src/` and propose concrete improvements.
+
+Scope:
+- `src/express_app.js`
+- `src/mcp_server.js`
+- `src/mcp_tools/*`
+- `src/mcp_prompts/*`
+- `src/middlewares/*`
+- tests if present
+
+Process:
+1) Protocol & transport: request parsing, Accept headers, SSE behavior, JSON-RPC correctness, lifecycle.
+2) Tooling: naming consistency, schemas, output stability, error paths.
+3) Security: body limits, logging hygiene, DoS considerations, safe defaults.
+4) Provide prioritized improvements: P0/P1/P2.
+
+Output format:
+- `## Summary`
+- `## P0 fixes` (must-do)
+- `## P1 improvements`
+- `## P2 nice-to-haves`
+- For each fix:
+  - Problem + evidence (file path)
+  - Proposed change
+  - Patch (full updated file contents in fenced `md` blocks)
+- `## Verification checklist` (commands + expected results)
+
+Constraints:
+- Minimal diffs, focused changes.
+- Don’t invent new architecture unless necessary; propose incremental steps.

.github/prompts/implement-mcp-http-basics.prompt.md

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+---
+agent: "mcp-protocol-engineer"
+name: implement-mcp-http-basics
+description: "Implement baseline MCP HTTP request parsing/handling in src/express_app.js with safe defaults and verification steps."
+---
+
+Goal: Improve the MCP HTTP endpoint implementation in `src/express_app.js`:
+- Parse JSON safely (correct middleware + size limit)
+- Validate required Accept headers for MCP POST
+- Return appropriate status codes for invalid inputs
+- Ensure transport handling receives the correct request body
+
+Output:
+- Proposed minimal changes
+- Full updated file content for `src/express_app.js` (and any other necessary file)
+- Verification checklist:
+  - curl examples (good + bad requests)
+  - expected status codes and content-types
+Constraints:
+- Minimal diffs and safe-by-default behavior
+- Avoid logging raw request bodies

.github/prompts/refactor-mcp-tools-consistency.prompt.md

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+---
+agent: "mcp-tool-author"
+name: refactor-mcp-tools-consistency
+description: "Normalize MCP tool naming, schemas, and outputs across src/mcp_tools without changing behavior."
+---
+
+Goal: Make MCP tools consistent without changing their external behavior.
+
+Checks:
+- Tool names: consistent separator/casing (choose a convention and apply consistently)
+- Titles/descriptions: clear and action-oriented
+- Input schemas: use zod; avoid untyped/implicit inputs
+- Output: deterministic formatting; avoid ad-hoc strings when JSON is intended
+- Logging: consistent fields; avoid logging raw bodies/secrets
+
+Output:
+- Proposed convention
+- List of tools that need updates
+- Patches (full file contents) for each changed file
+- Verification checklist