# 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_api_key_issuance

List every Organization and Workspace the caller can see, with the permissions it may put on a restricted personal API key in each (ADR-075).

Use before proposing a restricted key or before manage_api_key_grants narrows a key's access.

Never creates a key or returns a secret. A full-account key needs no issuance check.

Scopes: apiKey:read

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

### Input schema (personal API key)

```json
{
  "type": "object",
  "patternProperties": {
    "^[\\s\\S]*$": false
  },
  "additionalProperties": true,
  "propertyNames": {
    "not": {}
  }
}
```

### Input schema (OAuth / delegated agent)

```json
{
  "type": "object",
  "patternProperties": {
    "^[\\s\\S]*$": false
  },
  "additionalProperties": true,
  "propertyNames": {
    "not": {}
  }
}
```

### Output schema (structuredContent)

```json
{
  "type": "object",
  "properties": {
    "organizations": {
      "type": "array",
      "items": {
        "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})$",
            "format": "uuid"
          },
          "name": {
            "$ref": "#/$defs/LeadStoredText"
          },
          "isOwner": {
            "type": "boolean"
          },
          "organizationPermissions": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "allWorkspaces": {
            "anyOf": [
              {
                "type": "object",
                "properties": {
                  "permissions": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    }
                  }
                },
                "required": [
                  "permissions"
                ],
                "patternProperties": {
                  "^(?!(?:permissions)$)[\\s\\S]*$": false
                },
                "additionalProperties": true,
                "propertyNames": {
                  "anyOf": [
                    {
                      "type": "string",
                      "enum": [
                        "permissions"
                      ]
                    }
                  ]
                }
              },
              {
                "type": "null"
              }
            ]
          },
          "workspaces": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "workspaceId": {
                  "type": "string",
                  "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                  "format": "uuid"
                },
                "name": {
                  "$ref": "#/$defs/LeadStoredText"
                },
                "slug": {
                  "$ref": "#/$defs/LeadStoredText"
                },
                "permissions": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  }
                }
              },
              "required": [
                "workspaceId",
                "name",
                "slug",
                "permissions"
              ],
              "patternProperties": {
                "^(?!(?:workspaceId|name|slug|permissions)$)[\\s\\S]*$": false
              },
              "additionalProperties": true,
              "propertyNames": {
                "type": "string",
                "enum": [
                  "workspaceId",
                  "name",
                  "slug",
                  "permissions"
                ]
              }
            }
          }
        },
        "required": [
          "organizationId",
          "name",
          "isOwner",
          "organizationPermissions",
          "allWorkspaces",
          "workspaces"
        ],
        "patternProperties": {
          "^(?!(?:organizationId|name|isOwner|organizationPermissions|allWorkspaces|workspaces)$)[\\s\\S]*$": false
        },
        "additionalProperties": true,
        "propertyNames": {
          "type": "string",
          "enum": [
            "organizationId",
            "name",
            "isOwner",
            "organizationPermissions",
            "allWorkspaces",
            "workspaces"
          ]
        }
      }
    },
    "expiryOptions": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": [
          "30_days",
          "90_days",
          "365_days",
          "never"
        ]
      }
    },
    "defaultExpiry": {
      "type": "string",
      "enum": [
        "30_days",
        "90_days",
        "365_days",
        "never"
      ]
    }
  },
  "required": [
    "organizations",
    "expiryOptions",
    "defaultExpiry"
  ],
  "patternProperties": {
    "^(?!(?:organizations|expiryOptions|defaultExpiry)$)[\\s\\S]*$": false
  },
  "additionalProperties": true,
  "propertyNames": {
    "type": "string",
    "enum": [
      "organizations",
      "expiryOptions",
      "defaultExpiry"
    ]
  },
  "$defs": {
    "LeadStoredText": {
      "type": "string",
      "maxLength": 65536
    }
  }
}
```

### Underlying API operations

- `personalApiKeys.issuance`: `GET /v1/me/api-key-issuance`