VS Code extension

add rate limiting to the public API and make sure existing clients keep working

## Role
Act as a senior software engineer.

## Objective
Add rate limiting to the public API.

## Requirements
- Make sure existing clients keep working.
- Follow the conventions, naming, and structure already used in the codebase.
- Handle invalid input and failure paths explicitly.

## Constraints
- Do not change unrelated code, and do not add dependencies unless the task requires them.
- Keep existing public interfaces and API contracts unchanged.

## Edge cases
- Invalid, missing, and oversized input.
- Unauthenticated, unauthorized, and rate-limited requests.

## Testing
- Success responses: status code and response shape.
- Validation and error responses.
- Add tests for the new behavior, including failure paths.
- Run the existing test suite and report the result.

## Acceptance criteria
- The new behavior works as described in the objective.
- All tests pass and no unrelated files are changed.

## Expected output
- Return every change as a unified diff or as complete new and updated files.
- List the design decisions and assumptions you made.

Computed by the engine when this page was built. Every added line is labeled as engine guidance in the interface, so you can delete what does not apply.

• Grounded in your code

  Project facts and relevant files are added to the prompt and labeled as coming from the codebase.

• Sections only when needed

  An "explain this" request gets no test plan. A bug fix gets edge cases and acceptance criteria.

• Nothing leaves unchecked

  Strict, redact, and warn modes for credentials and personal data.

• Closes the loop

  A review prompt built from the changed files verifies the AI output against the task.

• Workflow panel

  Four steps in the Activity Bar: Codebase, Prompt, AI, Codebase.

• Scope selection

  Entire workspace, current file, chosen files or folder, or no code.

• Generate prompt

  Role, objective, context, code, requirements, constraints, edge cases, testing, acceptance criteria, and output.

• Restructure command

  Works on a selection or a document and opens a diff of original against restructured.

• Reduce tokens

  Verified, meaning-preserving removal of filler and repetition.

• Bundled MCP server

  Registers the engine as MCP tools for Copilot agent mode on activation.

• Developers using Copilot Chat or another assistantSend a prompt with requirements, constraints, tests, and acceptance criteria without typing them every time.
• Engineers in large repositoriesLet relevance scoring choose the context so the prompt stays inside the context window.
• Teams with security requirementsMake secret redaction the default path between the editor and a chat model.

• 01

  Fix a bug with context

  Select the workspace, describe the bug, and send a prompt that names the affected files and what must not break.

• 02

  Review AI changes

  After the assistant edits files, build a review prompt from the uncommitted changes.

• 03

  Rewrite a prompt file

  Run Restructure Prompt on a prompt stored in the repository and accept the diff.

• 04

  Give agents the tools

  Let Copilot agent mode call analyze, restructure, and sanitize through the bundled MCP server.

• IntegrationMCPConnect PromptFlowEngine with AI agents and MCP-compatible workflows.
• IntegrationChrome ExtensionOptimize and improve prompts directly inside your browser.
• ToolPrompt OptimizerCut tokens and add structure, with proof that every requirement survived.
• DocumentationVS Code extension documentationReference and setup details.
• DocumentationMCP client setupReference and setup details.

• GuidePrompt engineering for developersCoding prompts that produce correct changes, and how to treat production prompts as code.
• GuidePrompts for AI agents: instructions, tools, and workflowsAgent instructions, tool descriptions, context management, and when a workflow beats an agent.
• GuideToken optimization: cost, context windows, and compressionHow tokens and context windows work, how to count them, and how to cut them safely.