Operation-level risk guidance for consolidated MCP tools, including schema drift and retry signals.
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Check whether the actual operation inside an MCP tool call is safe before execution. Use this when one MCP tool exposes multiple operations with different side effects, so whole-tool permissions are too coarse. Provide the native MCP server identity, the tool's tools/list metadata and the intended arguments. For supported consolidated tools, distinguish read, create/add, update/mutate and delete/destructive operations. Return ALLOW, DENY, or REQUIRE_APPROVAL. Unknown, unsupported, ambiguous, or schema-changed calls fail closed with REQUIRE_APPROVAL. The evaluator never executes the source operation.
This tool takes no arguments.
Check whether the actual operation inside an MCP tool call is safe before execution. Use this when one MCP tool exposes multiple operations with different side effects, so whole-tool permissions are too coarse. Provide the native MCP server identity, the tool's tools/list metadata and the intended arguments. For supported consolidated tools, distinguish read, create/add, update/mutate and delete/destructive operations. Return ALLOW, DENY, or REQUIRE_APPROVAL. Unknown, unsupported, ambiguous, or schema-changed calls fail closed with REQUIRE_APPROVAL. The evaluator never executes the source operation.
No arguments.
{
"type": "object",
"title": "describe_operation_risk_serviceArguments",
"properties": {}
}Check whether the actual operation inside an MCP tool call is safe before execution. Use this when one MCP tool exposes multiple operations with different side effects, so whole-tool permissions are too coarse. Provide the native MCP server identity, the tool's tools/list metadata and the intended arguments. For supported consolidated tools, distinguish read, create/add, update/mutate and delete/destructive operations. Return ALLOW, DENY, or REQUIRE_APPROVAL. Unknown, unsupported, ambiguous, or schema-changed calls fail closed with REQUIRE_APPROVAL. The evaluator never executes the source operation.
| Argument | Type | Description |
|---|---|---|
| tool* | object | The complete relevant Tool record returned by the source server's tools/list. |
| source* | object | MCP server and negotiated protocol identity for the source tool. |
| arguments* | object | Arguments intended for the source MCP tools/call request being evaluated. The evaluator does not execute that call. |
{
"type": "object",
"title": "NativeMcpEvaluationRequest",
"required": [
"source",
"tool",
"arguments"
],
"properties": {
"tool": {
"type": "object",
"title": "NativeToolRecord",
"required": [
"name",
"description",
"inputSchema"
],
"properties": {
"name": {
"type": "string",
"title": "Name",
"description": "Exact tool name from the MCP server's tools/list response."
},
"_meta": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"title": "Meta",
"default": null,
"description": "Relevant tool metadata from tools/list, when present."
},
"icons": {
"anyOf": [
{
"type": "array",
"items": {
"type": "object",
"additionalProperties": true
}
},
{
"type": "null"
}
],
"title": "Icons",
"default": null,
"description": "Tool icons from tools/list, when present."
},
"title": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Title",
"default": null,
"description": "Tool title from tools/list, when provided by the server."
},
"execution": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"title": "Execution",
"default": null,
"description": "Tool execution metadata from tools/list, when present."
},
"annotations": {
"type": "object",
"title": "Annotations",
"description": "Tool annotations from tools/list, such as read-only or destructive hints; use an empty object when absent.",
"additionalProperties": true
},
"description": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Description",
"description": "Tool description from tools/list, or null if the server omitted it."
},
"inputSchema": {
"type": "object",
"title": "Inputschema",
"description": "Complete inputSchema from tools/list; used to validate the intended arguments and match a supported tool manifest.",
"additionalProperties": true
},
"outputSchema": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"title": "Outputschema",
"default": null,
"description": "Tool output schema from tools/list, when present."
}
},
"description": "The complete relevant Tool record returned by the source server's tools/list.",
"additionalProperties": false
},
"source": {
"type": "object",
"title": "NativeSource",
"required": [
"server",
"protocol_version"
],
"properties": {
"server": {
"type": "object",
"title": "NativeServerIdentity",
"required": [
"name",
"version"
],
"properties": {
"name": {
"type": "string",
"title": "Name",
"description": "Name reported by the MCP server during initialize; used as a supported-manifest lookup hint."
},
"version": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Version",
"description": "Server version reported during initialize, or null when unavailable."
}
},
"description": "MCP server identity from the connection's initialize response.",
"additionalProperties": false
},
"protocol_version": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Protocol Version",
"description": "Negotiated MCP protocol version, or null when unavailable."
}
},
"description": "MCP server and negotiated protocol identity for the source tool.",
"additionalProperties": false
},
"arguments": {
"type": "object",
"title": "Arguments",
"description": "Arguments intended for the source MCP tools/call request being evaluated. The evaluator does not execute that call.",
"additionalProperties": true
}
},
"additionalProperties": false
}