From 9f77df4a277b4b494add312bc58f4df9069d05ab Mon Sep 17 00:00:00 2001
From: Norman King <norman@redclaus.com>
Date: Mon, 25 May 2026 11:19:59 -0400
Subject: [PATCH] feat: add zai-coding provider for Z.AI GLM Coding Plan
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Add a new zai-coding provider that uses the Anthropic-compatible endpoint
(https://api.z.ai/api/anthropic) instead of the OpenAI-compatible /api/paas/v4
endpoint. The Z.AI Coding Plan quota is only accessible via the Anthropic
endpoint — the standard endpoint returns 1113 (insufficient balance).

Changes:
- New plugin: plugins/model-providers/zai-coding/ with anthropic_messages api_mode
- Register zai-coding in PROVIDER_REGISTRY (hermes_cli/auth.py) with
  inference_base_url pointing to the Anthropic endpoint
- Add provider aliases: zai-coding, zai-coding-plan, glm-coding, z-ai-coding

Co-Authored-By: Oz <oz-agent@warp.dev>
---
 hermes_cli/auth.py                            |  9 +++++
 .../model-providers/zai-coding/__init__.py    | 33 +++++++++++++++++++
 .../model-providers/zai-coding/plugin.yaml    |  5 +++
 3 files changed, 47 insertions(+)
 create mode 100644 plugins/model-providers/zai-coding/__init__.py
 create mode 100644 plugins/model-providers/zai-coding/plugin.yaml

diff --git a/hermes_cli/auth.py b/hermes_cli/auth.py
index 6f4fc3446361b..b0122352b4c89 100644
--- a/hermes_cli/auth.py
+++ b/hermes_cli/auth.py
@@ -262,6 +262,14 @@ class ProviderConfig:
         api_key_env_vars=("GLM_API_KEY", "ZAI_API_KEY", "Z_AI_API_KEY"),
         base_url_env_var="GLM_BASE_URL",
     ),
+    "zai-coding": ProviderConfig(
+        id="zai-coding",
+        name="Z.AI / GLM (Coding Plan)",
+        auth_type="api_key",
+        inference_base_url="https://api.z.ai/api/anthropic",
+        api_key_env_vars=("GLM_API_KEY", "ZAI_API_KEY", "Z_AI_API_KEY"),
+        base_url_env_var="GLM_BASE_URL",
+    ),
     "kimi-coding": ProviderConfig(
         id="kimi-coding",
         name="Kimi / Moonshot",
@@ -1422,6 +1430,7 @@ def resolve_provider(
     # Normalize provider aliases
     _PROVIDER_ALIASES = {
         "glm": "zai", "z-ai": "zai", "z.ai": "zai", "zhipu": "zai",
+        "zai-coding": "zai-coding", "zai-coding-plan": "zai-coding", "glm-coding": "zai-coding", "z-ai-coding": "zai-coding",
         "google": "gemini", "google-gemini": "gemini", "google-ai-studio": "gemini",
         "x-ai": "xai", "x.ai": "xai", "grok": "xai",
         "xai-oauth": "xai-oauth", "x-ai-oauth": "xai-oauth",
diff --git a/plugins/model-providers/zai-coding/__init__.py b/plugins/model-providers/zai-coding/__init__.py
new file mode 100644
index 0000000000000..0a7238a80d981
--- /dev/null
+++ b/plugins/model-providers/zai-coding/__init__.py
@@ -0,0 +1,33 @@
+"""Z.AI GLM Coding Plan provider profile.
+
+Separate from the standard `zai` profile because the coding plan
+uses the Anthropic-compatible endpoint (api.z.ai/api/anthropic)
+instead of the OpenAI-compatible /api/paas/v4 endpoint.
+
+The coding plan quota is ONLY accessible via the Anthropic endpoint.
+"""
+
+from providers import register_provider
+from providers.base import ProviderProfile
+
+
+zai_coding = ProviderProfile(
+    name="zai-coding",
+    aliases=("zai-coding-plan", "glm-coding", "z-ai-coding"),
+    api_mode="anthropic_messages",
+    env_vars=("GLM_API_KEY", "ZAI_API_KEY", "Z_AI_API_KEY"),
+    display_name="Z.AI (GLM Coding Plan)",
+    description="Z.AI GLM Coding Plan — Anthropic-compatible endpoint",
+    signup_url="https://z.ai/",
+    base_url="https://api.z.ai/api/anthropic",
+    auth_type="api_key",
+    fallback_models=(
+        "glm-5.1",
+        "glm-5-turbo",
+        "glm-4.7",
+        "glm-4.5-air",
+    ),
+    default_aux_model="glm-4.5-air",
+)
+
+register_provider(zai_coding)
diff --git a/plugins/model-providers/zai-coding/plugin.yaml b/plugins/model-providers/zai-coding/plugin.yaml
new file mode 100644
index 0000000000000..60c2a4c4af41a
--- /dev/null
+++ b/plugins/model-providers/zai-coding/plugin.yaml
@@ -0,0 +1,5 @@
+name: zai-coding-provider
+kind: model-provider
+version: 1.0.0
+description: Z.AI GLM Coding Plan (Anthropic-compatible endpoint)
+author: Nous Research