Sigmap Nvim

sigmap.nvim

SigMap AI context engine — Neovim plugin

[](https://github.com/manojmallick/sigmap.nvim/releases/latest) [](LICENSE) [](https://neovim.io) [](https://nodejs.org)

80.0% retrieval hit@5 · 96.9% token reduction · 29 languages · Zero npm deps

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What is SigMap?

SigMap extracts a compact signature map of your entire codebase — function names, class hierarchies, exported types — and writes it to .github/copilot-instructions.md. Every AI coding assistant reads that file as its first-message context.

This plugin brings SigMap into Neovim with commands, auto-run on save, a statusline widget, and :checkhealth integration.

Before SigMap: "I don't know your codebase — can you share some files?"
After SigMap:  "I can see your AuthService, UserRepository, 47 API routes…"

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What's new in v4.0

• Standalone release — independent version cycle from the SigMap CLI core
• Compatible with SigMap CLI v6.0 (graph-boosted retrieval, incremental sig cache)
• Install path corrected: 'manojmallick/sigmap.nvim' (no subdir needed)

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Install

lazy.nvim

{
  'manojmallick/sigmap.nvim',
  config = function()
    require('sigmap').setup({
      auto_run    = true,   -- regen on BufWritePost for source files
      float_query = true,   -- show query results in a floating window
    })
  end,
}

packer.nvim

use {
  'manojmallick/sigmap.nvim',
  config = function()
    require('sigmap').setup({ auto_run = true })
  end,
}

vim-plug

Plug 'manojmallick/sigmap.nvim'

Then in your Lua config:

require('sigmap').setup({ auto_run = true })

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Commands

| Command | Description | |---|---| | :SigMap [args] | Regenerate AI context file (passes args to the CLI) | | :SigMapQuery | TF-IDF ranked file retrieval in a floating window |

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Configuration

require('sigmap').setup({
  auto_run    = false,  -- regen on BufWritePost for *.js/ts/py/go/rs/java/rb/lua
  binary      = nil,    -- nil: auto-detect (sigmap → npx sigmap → local gen-context.js)
  notify      = true,   -- vim.notify on completion
  float_query = true,   -- show :SigMapQuery results in a floating window
})

---

Statusline widget

Returns sm:✓ when context is

MIT © 2026 Manoj Mallick · Made in Amsterdam 🇳🇱

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: manojmallick
• Source: manojmallick/sigmap.nvim
• License: MIT
• Homepage: https://manojmallick.github.io/sigmap/

Install and usage instructions live in the source repository linked above.