diff --git a/docs/filters/a2a.md b/docs/filters/a2a.md
index 0b87755e..970aae90 100644
--- a/docs/filters/a2a.md
+++ b/docs/filters/a2a.md
@@ -23,7 +23,7 @@ When `task_routing.enabled` is true, the filter captures task and context owners
 | `headers.version` | string | no | Header name for A2A version (e.g. `x-praxis-a2a-version`). |
 | `max_body_bytes` | integer | no | Maximum body size in bytes for `StreamBuffer`. |
 | `method_aliases` | object<string, string> | no | Method aliases for compatibility (slash-delimited → `PascalCase`). |
-| `on_invalid` | `continue` \| `reject` \| `error` | no | Invalid input handling behavior. |
+| `on_invalid` | OnInvalidBehavior | no | Invalid input handling behavior. |
 | `task_routing` | TaskRoutingConfig | no | Task-ownership routing configuration. |
 | `task_routing.enabled` | bool | no | Whether task routing is enabled. |
 | `task_routing.max_response_body_bytes` | integer | no | Maximum response body bytes to buffer for task route capture. |
diff --git a/docs/filters/anthropic_messages_format.md b/docs/filters/anthropic_messages_format.md
index 41d2b727..7c949912 100644
--- a/docs/filters/anthropic_messages_format.md
+++ b/docs/filters/anthropic_messages_format.md
@@ -9,7 +9,7 @@ Classifies Anthropic Messages API requests and promotes routing facts to headers
 
 | Field | Type | Required | Description |
 |-------|------|---------|-------------|
-| `on_invalid` | `continue` \| `reject` \| `error` | no | Behavior when the body cannot be classified. |
+| `on_invalid` | OnInvalidBehavior | no | Behavior when the body cannot be classified. |
 | `max_body_bytes` | integer | no | Maximum body size in bytes for `StreamBuffer` mode. |
 | `headers` | AnthropicMessagesFormatHeaders | no | Header names for promoted classification facts. |
 | `headers.format` | string | no | Header name for the detected format. |
diff --git a/docs/filters/mcp.md b/docs/filters/mcp.md
index 62de7e61..60b8a891 100644
--- a/docs/filters/mcp.md
+++ b/docs/filters/mcp.md
@@ -35,7 +35,7 @@ Supports two protocol profiles: `current` (session-based, default) and `stateles
 | `headers.protocol_version` | string | no | Header name for the MCP protocol version (e.g. `x-praxis-mcp-protocol-version`). |
 | `headers.session_present` | string | no | Header name for MCP session presence (e.g. `x-praxis-mcp-session-present`). |
 | `max_body_bytes` | integer | no | Maximum body size in bytes for `StreamBuffer`. |
-| `on_invalid` | `continue` \| `reject` \| `error` | no | Invalid input handling behavior. |
+| `on_invalid` | OnInvalidBehavior | no | Invalid input handling behavior. |
 | `cache_scope` | `public` \| `private` | no | Cache scope for stateless responses. Requires `protocol_profile: stateless`. |
 | `cache_ttl_ms` | integer | no | Cache TTL in milliseconds for stateless responses. Requires `protocol_profile: stateless`. |
 | `default_version` | string | no | Fallback MCP protocol version. When omitted, derived from the profile. |
diff --git a/docs/filters/openai_responses_format.md b/docs/filters/openai_responses_format.md
index da974ccf..cc203b6a 100644
--- a/docs/filters/openai_responses_format.md
+++ b/docs/filters/openai_responses_format.md
@@ -19,7 +19,7 @@ Use with branch chains to route stateful and stateless requests to different clu
 
 | Field | Type | Required | Description |
 |-------|------|---------|-------------|
-| `on_invalid` | `continue` \| `reject` \| `error` | no | Behavior when the body cannot be classified. |
+| `on_invalid` | OnInvalidBehavior | no | Behavior when the body cannot be classified. |
 | `max_body_bytes` | integer | no | Maximum body size in bytes for `StreamBuffer` mode. |
 | `headers` | ResponsesFormatHeaders | no | Header names for promoted classification facts. |
 | `headers.format` | string | no | Header name for the detected format (e.g. `openai_responses`, `openai_chat_completions`). |