Proof Holdings

list_domains

Read-only

List all domains for the authenticated account. Returns domain metadata including verification status.

ACCESS: needs a Proof account. Authenticate this client (Claude Code: /mcp → Authenticate), or sign in with start_login — a session opens this tool — then call this tool again.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "list_domains"
  }
}

Input Schema

Name	Required	Description	Default
No arguments

Output Schema

Name	Required	Description	Default
`data`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedNov 2, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": {},
+  "description": "The account's domains, newest first",
+  "properties": {
+    "data": {
+      "items": {
+        "additionalProperties": {},
+        "properties": {
+          "actual_dns_host": {
+            "type": "string"
+          },
+          "actual_dns_host_name": {
+            "type": "string"
+          },
+          "check_count": {
+            "maximum": 9007199254740991,
+            "minimum": -9007199254740991,
+            "type": "integer"
+          },
+          "created_at": {
+            "type": "string"
+          },
+          "detected_provider": {
+            "type": "string"
+          },
+          "dns_mismatch_warning": {
+            "type": "string"
+          },
+          "dns_records": {
+            "items": {
+              "additionalProperties": {},
+              "properties": {
+                "name": {
+                  "type": "string"
+                },
+                "priority": {
+                  "maximum": 9007199254740991,
+                  "minimum": -9007199254740991,
+                  "type": "integer"
+                },
+                "purpose": {
+                  "type": "string"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "value": {
+                  "type": "string"
+                },
+                "verified": {
+                  "type": "boolean"
+                },
+                "verified_at": {
+                  "type": "string"
+                }
+              },
+              "required": [
+                "type",
+                "name",
+                "value",
+                "purpose",
+                "verified"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "domain": {
+            "type": "string"
+          },
+          "email_sending_enabled": {
+            "type": "boolean"
+          },
+          "email_verification": {
+            "additionalProperties": {},
+            "properties": {
+              "attempts": {
+                "maximum": 9007199254740991,
+                "minimum": -9007199254740991,
+                "type": "integer"
+              },
+              "email_address": {
+                "type": "string"
+              },
+              "email_prefix": {
+                "type": "string"
+              },
+              "expires_at": {
+                "type": "string"
+              },
+              "last_sent_at": {
+                "type": "string"
+              },
+              "verified_at": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "email_prefix",
+              "email_address",
+              "expires_at",
+              "attempts"
+            ],
+            "type": "object"
+          },
+          "error_message": {
+            "type": "string"
+          },
+          "for_email_sending": {
+            "type": "boolean"
+          },
+          "for_verification": {
+            "type": "boolean"
+          },
+          "from_email": {
+            "type": "string"
+          },
+          "godaddy_connected": {
+            "type": "boolean"
+          },
+          "has_dns_mismatch": {
+            "type": "boolean"
+          },
+          "has_provider_credentials": {
+            "type": "boolean"
+          },
+          "http_file_content": {
+            "type": "string"
+          },
+          "http_file_path": {
+            "type": "string"
+          },
+          "id": {
+            "type": "string"
+          },
+          "last_checked_at": {
+            "type": "string"
+          },
+          "oauth_connected": {
+            "type": "boolean"
+          },
+          "oauth_url": {
+            "type": "string"
+          },
+          "profile_id": {
+            "type": "string"
+          },
+          "proof_expires_at": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "proof_id": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "proof_revoked_reason": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "proof_status": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "provider": {
+            "type": "string"
+          },
+          "provider_credential_name": {
+            "type": "string"
+          },
+          "provider_name": {
+            "type": "string"
+          },
+          "resend": {
+            "additionalProperties": {},
+            "properties": {
+              "dkim_records": {
+                "items": {
+                  "additionalProperties": {},
+                  "properties": {
+                    "name": {
+                      "type": "string"
+                    },
+                    "priority": {
+                      "maximum": 9007199254740991,
+                      "minimum": -9007199254740991,
+                      "type": "integer"
+                    },
+                    "purpose": {
+                      "type": "string"
+                    },
+                    "type": {
+                      "type": "string"
+                    },
+                    "value": {
+                      "type": "string"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    },
+                    "verified_at": {
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "type",
+                    "name",
+                    "value",
+                    "purpose",
+                    "verified"
+                  ],
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "domain_id": {
+                "type": "string"
+              },
+              "last_checked_at": {
+                "type": "string"
+              },
+              "registered_at": {
+                "type": "string"
+              },
+              "status": {
+                "type": "string"
+              },
+              "verified_at": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "status",
+              "dkim_records"
+            ],
+            "type": "object"
+          },
+          "status": {
+            "type": "string"
+          },
+          "supports_api_key": {
+            "type": "boolean"
+          },
+          "supports_api_token": {
+            "type": "boolean"
+          },
+          "supports_auto_dns": {
+            "type": "boolean"
+          },
+          "txt_record_name": {
+            "type": "string"
+          },
+          "txt_record_value": {
+            "type": "string"
+          },
+          "updated_at": {
+            "type": "string"
+          },
+          "verification_method": {
+            "type": "string"
+          },
+          "verification_subtype": {
+            "type": "string"
+          },
+          "verified_at": {
+            "type": "string"
+          },
+          "verified_providers": {
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          }
+        },
+        "required": [
+          "id",
+          "domain",
+          "status",
+          "detected_provider",
+          "provider_name",
+          "supports_auto_dns",
+          "verification_method",
+          "for_email_sending",
+          "for_verification",
+          "dns_records",
+          "has_dns_mismatch",
+          "txt_record_name",
+          "txt_record_value",
+          "http_file_path",
+          "http_file_content",
+          "oauth_connected",
+          "godaddy_connected",
+          "supports_api_token",
+          "supports_api_key",
+          "verified_providers",
+          "check_count",
+          "created_at",
+          "updated_at"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "data"
+  ],
+  "type": "object"
+}

First observedSep 19, 2026

TDQS

A4.4/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

readOnlyHint already declares the safe-read profile, and the description adds value beyond it by disclosing the account requirement and the auth handshake sequence needed before calls succeed. It adds the return content broadly ("domain metadata including verification status"), though it says nothing about volume, pagination, or empty-account behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loads the core purpose in one sentence, then the return note, then access — the right order for an agent skimming. The parenthetical UI path ("Claude Code: /mcp → Authenticate") is client-specific detail that is useful but slightly bloats an otherwise two-sentence definition.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Zero-parameter read tool with an output schema, a readOnlyHint annotation, and an explicit auth prerequisite — nothing an agent needs in order to decide to call it or recover from an auth failure is missing. Return shape is covered by the output schema, so the description need not enumerate fields.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool takes zero parameters, so there is no parameter semantics for the description to carry; the baseline for a param-free tool applies. Nothing in the description misdescribes or complicates the empty input.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ("List all domains") plus its scope ("for the authenticated account"), which cleanly separates it from singular siblings like get_domain and from mutators like add_domain/delete_domain without needing the schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives clear invocation context: it needs a Proof account, names the auth path (/mcp → Authenticate) and the start_login fallback, and tells the agent to call the tool again after a session opens. It stops short of naming alternatives (e.g. get_domain for a single domain), so no explicit exclusions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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