openrouter.ai provider

[deathbeam]

You need to set OPENROUTER_API_KEY to your API key.

require('CopilotChat.config').providers.openrouter = {
    prepare_input = require('CopilotChat.config.providers').copilot.prepare_input,
    prepare_output = require('CopilotChat.config.providers').copilot.prepare_output,

    get_headers = function()
        local api_key = assert(os.getenv('OPENROUTER_API_KEY'), 'OPENROUTER_API_KEY env not set')
        return {
            Authorization = 'Bearer ' .. api_key,
            ['Content-Type'] = 'application/json',
        }
    end,

    get_models = function(headers)
        local response, err = require('CopilotChat.utils').curl_get('https://openrouter.ai/api/v1/models', {
            headers = headers,
            json_response = true,
        })

        if err then
            error(err)
        end

        return vim.iter(response.body.data)
            :map(function(model)
                return {
                    id = model.id,
                    name = model.name,
                }
            end)
            :totable()
    end,

    get_url = function()
        return 'https://openrouter.ai/api/v1/chat/completions'
    end,
}

[tecfu]

How can this plugin be used entirely without Copilot? I have deleted my ~/.config/github-copilot directory and only want to use my OpenRouter subscription. But when I try to select a model using $, I get hung on an authentication step to Github.

See:

Given:

" CopilotChat
Plug 'CopilotC-Nvim/CopilotChat.nvim'
function! SetupChat()
  lua << EOF
  -- Fetch API key from environment variable
  local api_key = os.getenv("OPENROUTER_API_KEY")
  if not api_key or api_key == "" then
    error("OPENROUTER_API_KEY environment variable is not set. Add `export OPENROUTER_API_KEY=...` to your shell config.")
  end

  require('CopilotChat').setup({
    debug = true,
    mappings = {
      complete = {
        detail = 'Use @<Tab> or /<Tab> for options.',
        -- IMPORTANT: Default <Tab> mapping to accept completion conflicts with copilot.vim <Tab> mapping.
        -- Must change insert mode or accept completion won't work.
        insert = '<S-Tab>'
      }
    },
    provider = "openrouter",
    providers = {
      openrouter = {
        -- docs expect a function: get_url(opts) -> string
        get_url = function(opts)
          return "https://openrouter.ai/api/v1/chat/completions"
        end,

        -- docs expect get_headers() -> table
        get_headers = function()
          return {
            ["Authorization"] = "Bearer " .. api_key,
            ["Content-Type"] = "application/json",
          }
        end,

        -- docs expect get_models() -> { { id = "...", name = "..." }, ... }
        get_models = function()
          return {
            { id = "openrouter/deepseek/deepseek-r1-0528:free", name = "DeepSeek R1 (Free via OpenRouter)" },
            { id = "openrouter/google/gemini-2.0-flash-exp:free", name = "Gemini 2.0-flash-exp (Free via OpenRouter)" },
          }
        end,

        prepare_input = require('CopilotChat.config.providers').copilot.prepare_input,
        prepare_output = require('CopilotChat.config.providers').copilot.prepare_output,
      }
    }
  })
EOF
endfunction
autocmd VimEnter * call SetupChat()

[deathbeam]

Meant to reply here:

Just disable the copilot provider, e.g do opposite of this for copilot: https://github.com/deathbeam/dotfiles/blob/master/nvim/.config/nvim/lua/config/copilot.lua#L68

EDIT:

Also provider = "openrouter" does nothing, all enabled providers are active by default and can be switched through based on model you picked, so selecting 1 provider specifically isnt rly a feature