diff --git a/nanobot/config/schema.py b/nanobot/config/schema.py
index 7d8f5c8..b31f306 100644
--- a/nanobot/config/schema.py
+++ b/nanobot/config/schema.py
@@ -165,12 +165,15 @@ class Config(BaseSettings):
         self, model: str | None = None
     ) -> tuple["ProviderConfig | None", str | None]:
         """Match provider config and its registry name. Returns (config, spec_name)."""
-        from nanobot.providers.registry import PROVIDERS
+        from nanobot.providers.registry import PROVIDERS, find_by_name
 
         forced = self.agents.defaults.provider
         if forced != "auto":
-            p = getattr(self.providers, forced, None)
-            return (p, forced) if p else (None, None)
+            spec = find_by_name(forced)
+            if spec:
+                p = getattr(self.providers, spec.name, None)
+                return (p, spec.name) if p else (None, None)
+            return None, None
 
         model_lower = (model or self.agents.defaults.model).lower()
         model_normalized = model_lower.replace("-", "_")
diff --git a/nanobot/providers/registry.py b/nanobot/providers/registry.py
index 9cc430b..10e0fec 100644
--- a/nanobot/providers/registry.py
+++ b/nanobot/providers/registry.py
@@ -15,6 +15,8 @@ from __future__ import annotations
 from dataclasses import dataclass, field
 from typing import Any
 
+from pydantic.alias_generators import to_snake
+
 
 @dataclass(frozen=True)
 class ProviderSpec:
@@ -545,7 +547,8 @@ def find_gateway(
 
 def find_by_name(name: str) -> ProviderSpec | None:
     """Find a provider spec by config field name, e.g. "dashscope"."""
+    normalized = to_snake(name.replace("-", "_"))
     for spec in PROVIDERS:
-        if spec.name == name:
+        if spec.name == normalized:
             return spec
     return None
diff --git a/tests/test_commands.py b/tests/test_commands.py
index 68cc429..4e79fc7 100644
--- a/tests/test_commands.py
+++ b/tests/test_commands.py
@@ -11,7 +11,7 @@ from nanobot.cli.commands import _make_provider, app
 from nanobot.config.schema import Config
 from nanobot.providers.litellm_provider import LiteLLMProvider
 from nanobot.providers.openai_codex_provider import _strip_model_prefix
-from nanobot.providers.registry import find_by_model
+from nanobot.providers.registry import find_by_model, find_by_name
 
 runner = CliRunner()
 
@@ -240,6 +240,34 @@ def test_config_explicit_ollama_provider_uses_default_localhost_api_base():
     assert config.get_api_base() == "http://localhost:11434"
 
 
+def test_config_accepts_camel_case_explicit_provider_name_for_coding_plan():
+    config = Config.model_validate(
+        {
+            "agents": {
+                "defaults": {
+                    "provider": "volcengineCodingPlan",
+                    "model": "doubao-1-5-pro",
+                }
+            },
+            "providers": {
+                "volcengineCodingPlan": {
+                    "apiKey": "test-key",
+                }
+            },
+        }
+    )
+
+    assert config.get_provider_name() == "volcengine_coding_plan"
+    assert config.get_api_base() == "https://ark.cn-beijing.volces.com/api/coding/v3"
+
+
+def test_find_by_name_accepts_camel_case_and_hyphen_aliases():
+    assert find_by_name("volcengineCodingPlan") is not None
+    assert find_by_name("volcengineCodingPlan").name == "volcengine_coding_plan"
+    assert find_by_name("github-copilot") is not None
+    assert find_by_name("github-copilot").name == "github_copilot"
+
+
 def test_config_auto_detects_ollama_from_local_api_base():
     config = Config.model_validate(
         {