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resend_domain_email

Resend the domain verification email. Rate limited to 3 requests per minute.

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

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

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

Input Schema

NameRequiredDescriptionDefault
idYesDomain ID
email_prefixNoEmail prefix to resend verification to

Output Schema

NameRequiredDescriptionDefault
dataYesDomain record
messageYes
email_sent_toNoSent when a code was sent; absent when the domain was already verified.
expires_in_minutesNoSent with `email_sent_to`.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": {},
+  "description": "A verification code emailed to an address on the domain",
+  "properties": {
+    "data": {
+      "additionalProperties": {},
+      "description": "Domain record",
+      "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"
+    },
+    "email_sent_to": {
+      "description": "Sent when a code was sent; absent when the domain was already verified.",
+      "type": "string"
+    },
+    "expires_in_minutes": {
+      "description": "Sent with `email_sent_to`.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "message": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "data",
+    "message"
+  ],
+  "type": "object"
+}
  2. Changed1 schema field changed
    • removedInput schema / additionalProperties
      Removed value: -false
  3. First observed

TDQS

A3.7/5.0
Behavior4/5

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

Annotations only declare readOnlyHint=false and destructiveHint=false, so the description meaningfully adds the rate limit (3 requests per minute) and the authentication requirement with a concrete recovery flow via start_login. It stops short of saying what happens to previously issued codes or whether the email must already exist, which would matter for a non-idempotent send.

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?

The action is front-loaded in the first sentence, with the rate limit immediately after and the access block clearly separated. Slightly over-engineered for a two-parameter resend tool, but nothing is padded or redundant.

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

Completeness4/5

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

With an output schema present and full schema coverage, the description only needs to add the non-structural context, and it does: auth path and rate limit. The main omission is its relationship to sibling verification tools, which an agent would still need to infer.

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

Parameters3/5

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

Schema description coverage is 100%, and the enum on email_prefix is fully documented in the schema, so the schema carries the parameter burden. The description adds no syntax or selection guidance (e.g., when to pick 'postmaster' vs 'admin'), so the baseline 3 applies.

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

Purpose4/5

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

The description gives a specific verb+resource ('Resend the domain verification email'), which is unambiguous. However, it does not differentiate from the many closely related siblings such as resend_verification, resend_email_otp, start_domain_email_verification, or check_domain_email_status, leaving the agent to guess which resend path applies.

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

Usage Guidelines3/5

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

Usage is implied by the name and the auth prerequisites ('needs a Proof account', start_login path), which is more than nothing. But there is no explicit when-to-use versus when-not guidance and no pointer to the alternative resend/verification-start tools that sit right next to it.

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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