Semantic code search across multiple repos #156
Description
Describe the feature or problem you'd like to solve
Implement org-wide semantic search as an MCP server or native command in copilot CLI
Proposed solution
Earlier this year, Github announced the general availability of semantic search in Copilot. From testing I can confirm that indexing works on individual repos within my org. If I go that repo's page and open Copilot Chat, I am able to make very fast semantic queries for code patterns within that repo. Cool.
However there a few limitations in its current form:
- User must open Copilot Chat on a repo's homepage before indexing can begin
- Searches are confined to 1 repo. If I want to search across N repos, it will require N separate search requests
- Copilot Chat doesn't even know which repos are indexed anyway, because it has no "list available indices" command
Perhaps I am missing something, but altogether this doesn't provide a lot of utility. Because for a repo to even get indexed, it's a good indication that AI-happy developers have already been working with it, and at a minimum it likely contains obvious AI-friendly documentation that will allow an agent to quickly find what it's looking for. So semantic search might save some tokens but it doesn't really do anything find couldn't do.
What I really want is something like Please summarize our existing approaches to rate limiting or Which of our NextJS apps are still on version 12? and it would search every repo in our organization for matching patterns.
Having this ability would be extremely powerful, and being able to do it in the new copilot CLI even more so. It could even be the "killer feature" that accelerates CLI adoption, and you are in a unique position to provide it (since you can already see people's code)
Example prompts or workflows
No response
Additional context
No response