# MCP tool reference

1 callable tools.

Use tools/call at https://mcp.schedulerzero.com/mcp with the exact tool name and arguments below. The /tools/ paths in this view are documentation identifiers, not HTTP endpoints. Request execution is disabled for this reference.

Inputs are shown for personal API keys (bound) and for OAuth/delegated agents. Output schemas describe MCP structuredContent: native objects pass through; arrays, scalars and null use a data wrapper. Text content retains the native JSON result.

[Connect a client](/mcp/connect) · [Authentication and authorization](/authentication) · [Generated auth guide](/auth.md) · [Download tool catalog](/mcp-catalog.json) · [Agent documentation](/llms.txt)

## read_organization_audit_log

Read an Organization's append-only audit log: membership, role, invitation, API-key, MCP-grant, ownership, and Workspace-lifecycle changes, newest first.

Call to answer who changed access or configuration and when (access reviews, incident questions). Page with nextCursor.

Only the owner and audit:read holders see the whole Organization; a Workspace Admin must name one Workspace they administer. Anyone else gets not found.

Scopes: audit:read

Risk: read; confirmation: none; idempotency: none.

### Input schema (personal API key)

```json
{
  "type": "object",
  "properties": {
    "organizationId": {
      "type": "string",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
      "format": "uuid"
    },
    "workspaceId": {
      "type": "string",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
      "format": "uuid"
    },
    "cursor": {
      "$ref": "#/$defs/OpaqueId"
    },
    "limit": {
      "type": "integer",
      "minimum": 1,
      "maximum": 200
    }
  },
  "required": [
    "organizationId"
  ],
  "patternProperties": {
    "^(?!(?:organizationId|workspaceId|cursor|limit)$)[\\s\\S]*$": false
  },
  "additionalProperties": true,
  "propertyNames": {
    "type": "string",
    "enum": [
      "organizationId",
      "workspaceId",
      "cursor",
      "limit"
    ]
  },
  "$defs": {
    "OpaqueId": {
      "type": "string",
      "minLength": 1,
      "maxLength": 512
    }
  }
}
```

### Input schema (OAuth / delegated agent)

```json
{
  "type": "object",
  "properties": {
    "organizationId": {
      "type": "string",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
      "format": "uuid"
    },
    "workspaceId": {
      "type": "string",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
      "format": "uuid"
    },
    "cursor": {
      "$ref": "#/$defs/OpaqueId"
    },
    "limit": {
      "type": "integer",
      "minimum": 1,
      "maximum": 200
    }
  },
  "required": [
    "organizationId"
  ],
  "patternProperties": {
    "^(?!(?:organizationId|workspaceId|cursor|limit)$)[\\s\\S]*$": false
  },
  "additionalProperties": true,
  "propertyNames": {
    "type": "string",
    "enum": [
      "organizationId",
      "workspaceId",
      "cursor",
      "limit"
    ]
  },
  "$defs": {
    "OpaqueId": {
      "type": "string",
      "minLength": 1,
      "maxLength": 512
    }
  }
}
```

### Output schema (structuredContent)

```json
{
  "$defs": {
    "OpaqueId": {
      "type": "string",
      "minLength": 1,
      "maxLength": 512
    },
    "UtcDateTimeEncoded": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}\\.\\d{3}Z$"
    },
    "ShortText": {
      "type": "string",
      "minLength": 1,
      "maxLength": 256
    },
    "Union_": {
      "anyOf": [
        {
          "type": "null"
        },
        {
          "type": "boolean"
        },
        {
          "type": "number"
        },
        {
          "type": "string"
        },
        {
          "type": "array",
          "items": {
            "$ref": "#/$defs/Union_"
          }
        },
        {
          "type": "object",
          "additionalProperties": {
            "$ref": "#/$defs/Union_"
          }
        }
      ]
    },
    "OrganizationAuditEvent": {
      "type": "object",
      "properties": {
        "id": {
          "$ref": "#/$defs/OpaqueId"
        },
        "occurredAt": {
          "$ref": "#/$defs/UtcDateTimeEncoded"
        },
        "organizationId": {
          "type": "string",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
          "format": "uuid"
        },
        "workspaceId": {
          "anyOf": [
            {
              "type": "string",
              "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
              "format": "uuid"
            },
            {
              "type": "null"
            }
          ]
        },
        "actor": {
          "type": "object",
          "properties": {
            "kind": {
              "type": "string",
              "enum": [
                "user",
                "api_key",
                "agent",
                "operator",
                "system"
              ]
            },
            "id": {
              "anyOf": [
                {
                  "$ref": "#/$defs/OpaqueId"
                },
                {
                  "type": "null"
                }
              ]
            },
            "label": {
              "$ref": "#/$defs/OpaqueId"
            }
          },
          "required": [
            "kind",
            "id",
            "label"
          ],
          "patternProperties": {
            "^(?!(?:kind|id|label)$)[\\s\\S]*$": false
          },
          "additionalProperties": true,
          "propertyNames": {
            "type": "string",
            "enum": [
              "kind",
              "id",
              "label"
            ]
          }
        },
        "action": {
          "$ref": "#/$defs/ShortText"
        },
        "targetKind": {
          "$ref": "#/$defs/ShortText"
        },
        "targetId": {
          "$ref": "#/$defs/OpaqueId"
        },
        "before": {
          "anyOf": [
            {
              "$ref": "#/$defs/Union_"
            },
            {
              "type": "null"
            }
          ]
        },
        "after": {
          "anyOf": [
            {
              "$ref": "#/$defs/Union_"
            },
            {
              "type": "null"
            }
          ]
        },
        "requestId": {
          "anyOf": [
            {
              "$ref": "#/$defs/OpaqueId"
            },
            {
              "type": "null"
            }
          ]
        },
        "metadata": {
          "$ref": "#/$defs/Union_"
        }
      },
      "required": [
        "id",
        "occurredAt",
        "organizationId",
        "workspaceId",
        "actor",
        "action",
        "targetKind",
        "targetId",
        "before",
        "after",
        "requestId",
        "metadata"
      ],
      "patternProperties": {
        "^(?!(?:id|occurredAt|organizationId|workspaceId|actor|action|targetKind|targetId|before|after|requestId|metadata)$)[\\s\\S]*$": false
      },
      "additionalProperties": true,
      "propertyNames": {
        "type": "string",
        "enum": [
          "id",
          "occurredAt",
          "organizationId",
          "workspaceId",
          "actor",
          "action",
          "targetKind",
          "targetId",
          "before",
          "after",
          "requestId",
          "metadata"
        ]
      }
    },
    "OrganizationAuditPage": {
      "type": "object",
      "properties": {
        "events": {
          "type": "array",
          "items": {
            "$ref": "#/$defs/OrganizationAuditEvent"
          }
        },
        "nextCursor": {
          "anyOf": [
            {
              "$ref": "#/$defs/OpaqueId"
            },
            {
              "type": "null"
            }
          ]
        },
        "scope": {
          "type": "string",
          "enum": [
            "organization",
            "workspace"
          ]
        }
      },
      "required": [
        "events",
        "nextCursor",
        "scope"
      ],
      "patternProperties": {
        "^(?!(?:events|nextCursor|scope)$)[\\s\\S]*$": false
      },
      "additionalProperties": true,
      "propertyNames": {
        "type": "string",
        "enum": [
          "events",
          "nextCursor",
          "scope"
        ]
      }
    }
  },
  "type": "object",
  "anyOf": [
    {
      "allOf": [
        {
          "$ref": "#/$defs/OrganizationAuditPage"
        },
        {
          "type": "object"
        }
      ]
    },
    {
      "type": "object",
      "properties": {
        "data": {
          "allOf": [
            {
              "$ref": "#/$defs/OrganizationAuditPage"
            },
            {
              "not": {
                "type": "object"
              }
            }
          ]
        }
      },
      "required": [
        "data"
      ],
      "additionalProperties": false
    }
  ]
}
```

### Underlying API operations

- `organizations.listAuditEvents`: `GET /v1/organizations/:organizationId/audit-events`