Add MiniMax provider support

clawspring/README.md

@@ -375,6 +375,8 @@ Claude Code is a powerful, production-grade AI coding assistant — but its sour
 | **Zhipu (GLM)** | `glm-4-flash` | 128k | Free tier available | `ZHIPU_API_KEY` |
 | **DeepSeek** | `deepseek-chat` | 64k | Strong coding | `DEEPSEEK_API_KEY` |
 | **DeepSeek** | `deepseek-reasoner` | 64k | Chain-of-thought reasoning | `DEEPSEEK_API_KEY` |
+| **MiniMax** | `MiniMax-M3` | 1M | Multimodal coding and long-context tasks | `MINIMAX_API_KEY` |
+| **MiniMax** | `MiniMax-M2.7` | 204.8k | Coding and agent workflows | `MINIMAX_API_KEY` |
 
 ### Open-Source (Local via Ollama)
 
@@ -542,6 +544,39 @@ clawspring --model deepseek/deepseek-chat
 clawspring --model deepseek/deepseek-reasoner
 ```
 
+### MiniMax
+
+Get your API key at [platform.minimax.io](https://platform.minimax.io/docs). The built-in provider uses the global OpenAI-compatible endpoint by default.
+
+```bash
+export MINIMAX_API_KEY=...
+
+clawspring --model MiniMax-M3
+clawspring --model MiniMax-M2.7
+```
+
+For the CN OpenAI-compatible endpoint, use the existing custom adapter:
+
+```bash
+export CUSTOM_API_KEY="$MINIMAX_API_KEY"
+export CUSTOM_BASE_URL=https://api.minimaxi.com/v1
+
+clawspring --model custom/MiniMax-M3
+```
+
+For the Anthropic-compatible protocol, use the existing Anthropic adapter with the Base URL ending in `/anthropic`:
+
+```bash
+# Global
+export ANTHROPIC_API_KEY="$MINIMAX_API_KEY"
+export ANTHROPIC_BASE_URL=https://api.minimax.io/anthropic
+clawspring --model anthropic/MiniMax-M3
+
+# CN
+export ANTHROPIC_BASE_URL=https://api.minimaxi.com/anthropic
+clawspring --model anthropic/MiniMax-M3
+```
+
 ---
 
 ## Usage: Open-Source Models (Local)
@@ -729,6 +764,7 @@ clawspring --model qwen:qwen-max
 | `qwen`, `qwq-` | qwen |
 | `glm-` | zhipu |
 | `deepseek-` | deepseek |
+| `minimax-` | minimax |
 | `llama`, `mistral`, `phi`, `gemma`, `mixtral`, `codellama` | ollama |
 
 ---
@@ -869,6 +905,7 @@ export MOONSHOT_API_KEY=sk-...       # Kimi
 export DASHSCOPE_API_KEY=sk-...      # Qwen
 export ZHIPU_API_KEY=...             # Zhipu GLM
 export DEEPSEEK_API_KEY=sk-...       # DeepSeek
+export MINIMAX_API_KEY=...           # MiniMax
 ```
 
 ### Method 2: Set Inside the REPL (persisted)
@@ -881,6 +918,7 @@ export DEEPSEEK_API_KEY=sk-...       # DeepSeek
 /config qwen_api_key=sk-...
 /config zhipu_api_key=...
 /config deepseek_api_key=sk-...
+/config minimax_api_key=...
 ```
 
 Keys are saved to `~/.clawspring/config.json` and loaded automatically on next launch.

clawspring/compaction.py

@@ -43,9 +43,7 @@ def get_context_limit(model: str) -> int:
     Returns:
         context limit in tokens
     """
-    provider_name = providers.detect_provider(model)
-    prov = providers.PROVIDERS.get(provider_name, {})
-    return prov.get("context_limit", 128000)
+    return providers.get_context_limit(model)
 
 
 # ── Layer 1: Snip old tool results ────────────────────────────────────────

clawspring/config.py

@@ -34,6 +34,7 @@
     # "qwen_api_key":      "..."
     # "zhipu_api_key":     "..."
     # "deepseek_api_key":  "..."
+    # "minimax_api_key":   "..."
 }
 
 

clawspring/providers.py

@@ -9,6 +9,7 @@
   qwen       — Alibaba DashScope (qwen-max, qwen-plus, ...)
   zhipu      — Zhipu GLM (glm-4, glm-4-plus, ...)
   deepseek   — DeepSeek (deepseek-chat, deepseek-reasoner, ...)
+  minimax    — MiniMax (MiniMax-M3, MiniMax-M2.7)
   ollama     — Local Ollama (llama3.3, qwen2.5-coder, ...)
   lmstudio   — Local LM Studio (any loaded model)
   custom     — Any OpenAI-compatible endpoint
@@ -99,6 +100,30 @@
             "deepseek-chat", "deepseek-coder", "deepseek-reasoner",
         ],
     },
+    "minimax": {
+        "type":       "openai",
+        "api_key_env": "MINIMAX_API_KEY",
+        "base_url":   "https://api.minimax.io/v1",
+        "anthropic_base_url": "https://api.minimax.io/anthropic",
+        "context_limit": 1000000,
+        "models": [
+            "MiniMax-M3", "MiniMax-M2.7",
+        ],
+        "regional_endpoints": [
+            {
+                "region": "global_en",
+                "openai_base_url": "https://api.minimax.io/v1",
+                "anthropic_base_url": "https://api.minimax.io/anthropic",
+                "docs_root": "https://platform.minimax.io/docs",
+            },
+            {
+                "region": "cn_zh",
+                "openai_base_url": "https://api.minimaxi.com/v1",
+                "anthropic_base_url": "https://api.minimaxi.com/anthropic",
+                "docs_root": "https://platform.minimaxi.com/docs",
+            },
+        ],
+    },
     "ollama": {
         "type":       "ollama",
         "api_key_env": None,
@@ -127,7 +152,35 @@
     },
 }
 
-# Cost per million tokens (approximate, fallback to 0 for unknown)
+# Per-model metadata for models whose capabilities or pricing do not fit the
+# provider-level defaults. Prices are in USD per million tokens.
+MODEL_METADATA = {
+    "MiniMax-M3": {
+        "context_limit": 1000000,
+        "input_modalities": ["text", "image", "video"],
+        "thinking": ["adaptive", "disabled"],
+        "pricing": {
+            "input": 0.6,
+            "output": 2.4,
+            "cache_read": 0.12,
+            "cache_write": None,
+        },
+    },
+    "MiniMax-M2.7": {
+        "context_limit": 204800,
+        "input_modalities": ["text"],
+        "thinking": ["always_on"],
+        "pricing": {
+            "input": 0.3,
+            "output": 1.2,
+            "cache_read": 0.06,
+            "cache_write": 0.375,
+        },
+    },
+}
+
+# Cost per million tokens for models with simple pricing (approximate,
+# fallback to 0 for unknown models).
 COSTS = {
     "claude-opus-4-6":          (15.0, 75.0),
     "claude-sonnet-4-6":        (3.0,  15.0),
@@ -161,6 +214,7 @@
     ("qwq-",          "qwen"),
     ("glm-",          "zhipu"),
     ("deepseek-",     "deepseek"),
+    ("minimax-",      "minimax"),
     ("llama",         "ollama"),
     ("mistral",       "ollama"),
     ("phi",           "ollama"),
@@ -184,6 +238,21 @@ def bare_model(model: str) -> str:
     return model.split("/", 1)[1] if "/" in model else model
 
 
+def get_model_metadata(model: str) -> dict:
+    """Return model-specific metadata, independent of adapter prefix."""
+    return MODEL_METADATA.get(bare_model(model), {})
+
+
+def get_context_limit(model: str) -> int:
+    """Return the model context limit, falling back to its provider default."""
+    metadata = get_model_metadata(model)
+    if metadata.get("context_limit"):
+        return metadata["context_limit"]
+    provider_name = detect_provider(model)
+    provider = PROVIDERS.get(provider_name, {})
+    return provider.get("context_limit", 128000)
+
+
 def get_api_key(provider_name: str, config: dict) -> str:
     prov = PROVIDERS.get(provider_name, {})
     # 1. Check config dict (e.g. config["kimi_api_key"])
@@ -200,6 +269,9 @@ def get_api_key(provider_name: str, config: dict) -> str:
 
 
 def calc_cost(model: str, in_tok: int, out_tok: int) -> float:
+    rates = get_model_metadata(model).get("pricing", {})
+    if rates:
+        return (in_tok * rates["input"] + out_tok * rates["output"]) / 1_000_000
     ic, oc = COSTS.get(bare_model(model), (0.0, 0.0))
     return (in_tok * ic + out_tok * oc) / 1_000_000
 

clawspring/tests/test_compaction.py

@@ -90,6 +90,14 @@ def test_unknown_model_fallback(self):
     def test_explicit_provider_prefix(self):
         assert get_context_limit("ollama/llama3.3") == 128000
 
+    def test_minimax_models_use_model_specific_limits(self):
+        assert get_context_limit("MiniMax-M3") == 1000000
+        assert get_context_limit("MiniMax-M2.7") == 204800
+
+    def test_minimax_limit_is_independent_of_adapter_prefix(self):
+        assert get_context_limit("custom/MiniMax-M3") == 1000000
+        assert get_context_limit("anthropic/MiniMax-M2.7") == 204800
+
 
 # ── snip_old_tool_results ─────────────────────────────────────────────────
 

clawspring/tests/test_providers.py

@@ -0,0 +1,78 @@
+"""Focused tests for provider registry metadata and pricing."""
+from __future__ import annotations
+
+import os
+import sys
+
+import pytest
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))
+
+from providers import (  # noqa: E402
+    MODEL_METADATA,
+    PROVIDERS,
+    calc_cost,
+    detect_provider,
+    get_api_key,
+)
+
+
+def test_minimax_registry_and_detection():
+    provider = PROVIDERS["minimax"]
+    assert provider["type"] == "openai"
+    assert provider["base_url"] == "https://api.minimax.io/v1"
+    assert provider["anthropic_base_url"] == "https://api.minimax.io/anthropic"
+    assert provider["models"] == ["MiniMax-M3", "MiniMax-M2.7"]
+    assert detect_provider("MiniMax-M3") == "minimax"
+    assert detect_provider("MiniMax-M2.7") == "minimax"
+
+
+def test_minimax_api_key_lookup(monkeypatch):
+    monkeypatch.setenv("MINIMAX_API_KEY", "test-key")
+    assert get_api_key("minimax", {}) == "test-key"
+    assert get_api_key("minimax", {"minimax_api_key": "config-key"}) == "config-key"
+
+
+def test_minimax_model_capabilities():
+    assert MODEL_METADATA["MiniMax-M3"]["input_modalities"] == [
+        "text", "image", "video",
+    ]
+    assert MODEL_METADATA["MiniMax-M3"]["thinking"] == ["adaptive", "disabled"]
+    assert MODEL_METADATA["MiniMax-M2.7"]["input_modalities"] == ["text"]
+    assert MODEL_METADATA["MiniMax-M2.7"]["thinking"] == ["always_on"]
+
+
+def test_minimax_regional_endpoints():
+    assert PROVIDERS["minimax"]["regional_endpoints"] == [
+        {
+            "region": "global_en",
+            "openai_base_url": "https://api.minimax.io/v1",
+            "anthropic_base_url": "https://api.minimax.io/anthropic",
+            "docs_root": "https://platform.minimax.io/docs",
+        },
+        {
+            "region": "cn_zh",
+            "openai_base_url": "https://api.minimaxi.com/v1",
+            "anthropic_base_url": "https://api.minimaxi.com/anthropic",
+            "docs_root": "https://platform.minimaxi.com/docs",
+        },
+    ]
+
+
+def test_minimax_cache_pricing_metadata():
+    m3_pricing = MODEL_METADATA["MiniMax-M3"]["pricing"]
+    m27_pricing = MODEL_METADATA["MiniMax-M2.7"]["pricing"]
+    assert m3_pricing == {
+        "input": 0.6,
+        "output": 2.4,
+        "cache_read": 0.12,
+        "cache_write": None,
+    }
+    assert m27_pricing == {
+        "input": 0.3,
+        "output": 1.2,
+        "cache_read": 0.06,
+        "cache_write": 0.375,
+    }
+    assert calc_cost("MiniMax-M3", 1000000, 1000000) == pytest.approx(3.0)
+    assert calc_cost("MiniMax-M2.7", 1000000, 1000000) == pytest.approx(1.5)