Add opencode home-manager module for zest and pureintent (#103)

* Add opencode home-manager module for zest and pureintent

* Move claude-code Juspay config to separate module

* Add JUSPAY_API_KEY export for opencode

configurations/home/srid@zest.nix

@@ -10,6 +10,7 @@ in
     flake.inputs.self.homeModules.darwin-only
     "${homeMod}/gui/1password.nix"
     "${homeMod}/claude-code"
+    "${homeMod}/opencode"
 
     "${homeMod}/work/juspay.nix"
 

configurations/nixos/pureintent/default.nix

@@ -19,6 +19,7 @@ in
   home-manager.sharedModules = [
     "${homeMod}/work/juspay.nix"
     "${homeMod}/services/vira.nix"
+    "${homeMod}/opencode"
 
     # "${homeMod}/services/dropbox.nix"
     # "${homeMod}/services/obsidian.nix"

modules/home/claude-code/default.nix

@@ -3,12 +3,10 @@ let
   inherit (flake.inputs) AI;
 in
 {
-  # Import the general home-manager module
   imports = [
     "${AI}/nix/home-manager-module.nix"
   ];
 
-  # Packages often used by Claude Code CLI
   home.packages = with pkgs; [
     tree
   ];
@@ -16,10 +14,8 @@ in
   programs.claude-code = {
     enable = true;
 
-    # Use sandboxed version 
-    package = flake.inputs.self.packages.${pkgs.stdenv.hostPlatform.system}.claude; # see claude-sandboxed.nix
+    package = flake.inputs.self.packages.${pkgs.stdenv.hostPlatform.system}.claude;
 
-    # Set the claude-code directory for auto-wiring
     autoWire.dir = AI;
   };
 }

modules/home/claude-code/juspay.nix

@@ -0,0 +1,24 @@
+{ flake, config, ... }:
+let
+  inherit (flake) self;
+in
+{
+  imports = [
+    ../agenix.nix
+  ];
+
+  home.sessionVariables = {
+    ANTHROPIC_BASE_URL = "https://grid.ai.juspay.net";
+    ANTHROPIC_MODEL = "claude-sonnet-4-5";
+    CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS = "1";
+  };
+
+  age.secrets.juspay-anthropic-api-key.file = self + /secrets/juspay-anthropic-api-key.age;
+
+  programs.zsh.initContent = ''
+    export ANTHROPIC_API_KEY="$(cat "${config.age.secrets.juspay-anthropic-api-key.path}")"
+  '';
+  programs.bash.initExtra = ''
+    export ANTHROPIC_API_KEY="$(cat "${config.age.secrets.juspay-anthropic-api-key.path}")"
+  '';
+}

modules/home/opencode/default.nix

@@ -0,0 +1,32 @@
+{ pkgs, ... }:
+let
+  juspayProvider = import ./juspay;
+in
+{
+  programs.opencode = {
+    enable = true;
+    package = pkgs.opencode;
+    settings = {
+      model = "litellm/glm-latest";
+      # Explore agent for fast codebase search/reading tasks
+      agent = {
+        explore = {
+          mode = "subagent";
+          model = "litellm/open-fast";
+        };
+      };
+      autoupdate = true;
+      provider = {
+        litellm = juspayProvider;
+      };
+      mcp = {
+        deepwiki = {
+          type = "remote";
+          url = "https://mcp.deepwiki.com/mcp";
+          enabled = true;
+        };
+      };
+      plugin = [ ];
+    };
+  };
+}

modules/home/opencode/juspay.nix

@@ -0,0 +1,9 @@
+{ config, ... }:
+{
+  programs.zsh.initContent = ''
+    export JUSPAY_API_KEY="$(cat "${config.age.secrets.juspay-anthropic-api-key.path}")"
+  '';
+  programs.bash.initExtra = ''
+    export JUSPAY_API_KEY="$(cat "${config.age.secrets.juspay-anthropic-api-key.path}")"
+  '';
+}

modules/home/opencode/juspay/default.nix

@@ -0,0 +1,13 @@
+let
+  models = import ./models.nix;
+in
+{
+  npm = "@ai-sdk/openai-compatible";
+  name = "Juspay";
+  options = {
+    baseURL = "https://grid.ai.juspay.net";
+    apiKey = "{env:JUSPAY_API_KEY}";
+    timeout = 600000;
+  };
+  inherit models;
+}

modules/home/opencode/juspay/models.nix

@@ -0,0 +1,145 @@
+{
+  open-large = {
+    name = "open-large";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 202752;
+      output = 32000;
+    };
+  };
+  open-fast = {
+    name = "open-fast";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 196000;
+      output = 32000;
+    };
+  };
+  open-vision = {
+    name = "open-vision";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 262144;
+      output = 32000;
+    };
+  };
+  claude-opus-4-5 = {
+    name = "claude-opus-4-5";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 1000000;
+      output = 128000;
+    };
+  };
+  claude-opus-4-6 = {
+    name = "claude-opus-4-6";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 1000000;
+      output = 128000;
+    };
+  };
+  claude-sonnet-4-6 = {
+    name = "claude-sonnet-4-6";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 200000;
+      output = 64000;
+    };
+  };
+  claude-sonnet-4-5 = {
+    name = "claude-sonnet-4-5";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 200000;
+      output = 32000;
+    };
+  };
+  glm-flash-experimental = {
+    name = "glm-flash-experimental";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 262144;
+      output = 32000;
+    };
+  };
+  gemini-3-pro-preview = {
+    name = "gemini-3-pro-preview";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 1048576;
+      output = 65535;
+    };
+  };
+  gemini-3-flash-preview = {
+    name = "gemini-3-flash-preview";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 1048576;
+      output = 65535;
+    };
+  };
+  minimax-m2 = {
+    name = "minimax-m2";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 202752;
+      output = 32000;
+    };
+  };
+  glm-latest = {
+    name = "glm-latest";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 202752;
+      output = 32000;
+    };
+  };
+  kimi-latest = {
+    name = "kimi-latest";
+    modalities = {
+      input = [ "text" "image" ];
+      output = [ "text" ];
+    };
+    limit = {
+      context = 262000;
+      output = 32000;
+    };
+  };
+}

modules/home/work/juspay.nix

@@ -1,18 +1,18 @@
 # Juspay-specific configuration using the work jump host module
 
 
-{ flake, config, ... }:
+{ flake, ... }:
 let
-  inherit (flake) self;
   inherit (flake.inputs) jumphost-nix;
+  homeMod = flake.inputs.self + /modules/home;
 in
 {
   imports = [
     "${jumphost-nix}/module.nix"
-    ../agenix.nix
+    "${homeMod}/claude-code/juspay.nix"
+    "${homeMod}/opencode/juspay.nix"
   ];
 
-  # https://github.com/srid/jumphost-nix
   programs.jumphost = {
     enable = true;
     host = "vanjaram.tail12b27.ts.net";
@@ -31,25 +31,6 @@ in
     };
   };
 
-  # For Juspay LiteLLM AI configuration
-  home.sessionVariables = {
-    # ANTHROPIC_API_KEY set in initExtra via agenix (see below)
-    ANTHROPIC_BASE_URL = "https://grid.ai.juspay.net";
-    ANTHROPIC_MODEL = "claude-sonnet-4-5";
-    CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS = "1"; # For GLM related bug
-  };
-  age = {
-    secrets = {
-      juspay-anthropic-api-key.file = self + /secrets/juspay-anthropic-api-key.age;
-    };
-  };
-  programs.zsh.initContent = ''
-    export ANTHROPIC_API_KEY="$(cat "${config.age.secrets.juspay-anthropic-api-key.path}")"
-  '';
-  programs.bash.initExtra = ''
-    export ANTHROPIC_API_KEY="$(cat "${config.age.secrets.juspay-anthropic-api-key.path}")"
-  '';
-
   home.shellAliases = {
     jcurl = "curl --socks5 localhost:1080";
   };

overlays/default.nix

@@ -36,4 +36,5 @@ packageOverlays // {
   # Use claude-code from nix-ai-tools instead of nixpkgs
   claude-code = (nix-ai-tools self.system).claude-code;
   copilot-cli = (nix-ai-tools self.system).copilot-cli;
+  opencode = (nix-ai-tools self.system).opencode;
 }