diff --git a/.gitea/workflows/agent.yml b/.gitea/workflows/agent.yml
index 45a0c29..9ed2d92 100644
--- a/.gitea/workflows/agent.yml
+++ b/.gitea/workflows/agent.yml
@@ -149,6 +149,7 @@ jobs:
           SCRIPTS: ${{ runner.temp }}/agents-scripts
           OLLAMA_URL: ${{ secrets.OLLAMA_URL }}
           OLLAMA_CLOUD_API_KEY: ${{ secrets.OLLAMA_CLOUD_API_KEY }}
+          XAI_API_KEY: ${{ secrets.XAI_API_KEY }}
           NAME: ${{ steps.prep.outputs.name }}
           SKILLS: ${{ steps.prep.outputs.skills }}   # JSON array of skills this agent may load
         run: bash "$SCRIPTS/install-opencode.sh"
diff --git a/.gitea/workflows/scripts/install-opencode.sh b/.gitea/workflows/scripts/install-opencode.sh
index 0c1f7df..a236034 100755
--- a/.gitea/workflows/scripts/install-opencode.sh
+++ b/.gitea/workflows/scripts/install-opencode.sh
@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 # Install opencode + provider config (+ Playwright MCP for browser agents).
 #
-# Required env (provided by the workflow step): OLLAMA_URL OLLAMA_CLOUD_API_KEY NAME SKILLS
-#   GITHUB_PATH HOME
+# Required env (provided by the workflow step): OLLAMA_URL OLLAMA_CLOUD_API_KEY XAI_API_KEY
+#   NAME SKILLS GITHUB_PATH HOME
 set -eu
 
 # PIN the opencode version: an unpinned `latest` means a breaking release (CLI flags, or the
@@ -38,19 +38,22 @@ esac
 SKILLS="${SKILLS:-[]}"
 PERM=$(jq -nc --argjson s "$SKILLS" '
   {skill: ( {"*":"deny"} + (reduce $s[] as $k ({}; . + {($k):"allow"})) )}')
-# Two ollama providers: local self-hosted (ornith) + Ollama Cloud (gemma4/kimi-k2.7-code/glm-5.2/minimax-m3).
-# The provider `models:` maps are DERIVED from agents.json (the single source of truth, shared with
-# route.sh) so every model an agent is routed to is always declared in the provider config.
-# `ollama-cloud/` prefix models go to the cloud provider; `ollama/` prefix models go to the local
-# provider. Built-in providers (e.g. `xai/grok-4.5` for @lead/@ops) are not derived here.
+# Three OpenAI-compatible providers: local self-hosted ollama (ornith) + Ollama Cloud
+# (gemma4/kimi-k2.7-code/glm-5.2/minimax-m3) + xAI (grok-4.5). The provider `models:` maps are
+# DERIVED from agents.json (the single source of truth, shared with route.sh) so every model an
+# agent is routed to is always declared in the provider config. `ollama-cloud/` prefix models go to
+# the cloud provider; `ollama/` prefix models go to the local provider; `xai/` prefix models go to
+# the xAI provider (OpenAI-compatible, https://api.x.ai/v1). No other built-in providers remain.
 # See issue #31.
 AGENTS_JSON="${SCRIPTS:-$(dirname -- "$0")}/agents.json"
 CLOUD_MODELS=$(jq -r '[.[] | .model | select(startswith("ollama-cloud/")) | sub("^ollama-cloud/";"")] | map({(.):{}}) | add // {}' "$AGENTS_JSON")
 LOCAL_MODELS=$(jq -r '[.[] | .model | select(startswith("ollama/")) | sub("^ollama/";"")] | map({(.):{}}) | add // {"ornith:35b":{}}' "$AGENTS_JSON")
-jq -n --argjson mcp "$MCP" --argjson perm "$PERM" --argjson cloud "$CLOUD_MODELS" --argjson local "$LOCAL_MODELS" --arg url "$OLLAMA_URL" --arg ckey "$OLLAMA_CLOUD_API_KEY" '{
+XAI_MODELS=$(jq -r '[.[] | .model | select(startswith("xai/")) | sub("^xai/";"")] | map({(.):{}}) | add // {}' "$AGENTS_JSON")
+jq -n --argjson mcp "$MCP" --argjson perm "$PERM" --argjson cloud "$CLOUD_MODELS" --argjson local "$LOCAL_MODELS" --argjson xai "$XAI_MODELS" --arg url "$OLLAMA_URL" --arg ckey "$OLLAMA_CLOUD_API_KEY" --arg xkey "$XAI_API_KEY" '{
   provider: {
     ollama: {npm:"@ai-sdk/openai-compatible", options:{baseURL:($url+"/v1")}, models:$local},
-    "ollama-cloud": {npm:"@ai-sdk/openai-compatible", options:{baseURL:"https://ollama.com/v1", apiKey:$ckey}, models:$cloud}
+    "ollama-cloud": {npm:"@ai-sdk/openai-compatible", options:{baseURL:"https://ollama.com/v1", apiKey:$ckey}, models:$cloud},
+    xai: {npm:"@ai-sdk/openai-compatible", options:{baseURL:"https://api.x.ai/v1", apiKey:$xkey}, models:$xai}
   },
   permission: $perm,
   mcp: $mcp