Manifold MCP

Find and verify an email

leads_get_email

Read-onlyIdempotent

Find and verify the work email of one named person. The only paid reveal keyed by a person; it runs a waterfall of email verification sources and stops at the first verified hit.

Use when: you have a person and their company and need an address to send to, "get me the email of Jordan Blake at acme.com", after leads_search_people found the person. Not for: anyone at a website (no name), use leads_get_domain_emails. Checking an address you already hold, use leads_get_email_status. The person's role and history, use leads_get_person. Returns: Record. first_name, last_name, domain, email, confidence (0 to 100, null when the source gives none), verification_status (valid | accept_all | invalid | unknown), found_by (the source that hit), position, linkedin_url, twitter, phone, sources[] (url, last_seen_at: where the address was seen). verification_status is the verdict of the source that hit: some sources return only addresses they verified themselves, catch-all domains included, so their hits read valid with null confidence and no sources; only a hit with no verdict is checked by an additional verifier before it is returned. leads_get_email_status asks that verifier separately, which can call the same address accept_all. position, linkedin_url, twitter, phone and sources are null or empty unless the source that hit reports them. NoData when no source finds one; do not retry. meta.providers_tried lists the sources asked, in order; with an id and no name the first is the people source that turns the profile into a name and domain, not a finder that missed. A source that does not answer in time is skipped; when none answers, ProviderUnavailable at no charge. Give id, or first_name + last_name + domain, or both: the name and domain beside an id skip the paid profile lookup. Cost: 7 credits on a hit, 31 when certain providers are used, plus 9 for an id given without a name; nothing on NoData. Cached 90 days. Example: {"first_name": "Jordan", "last_name": "Blake", "domain": "acme.com"}

Input Schema

Name	Required	Description
`id`	No	The LinkedIn profile URL a leads_search_people row gives as id. Alone, a paid profile lookup fills the name and domain, so pass the row's first_name, last_name and company_domain (as domain) with it. Anything else is InvalidTarget at no charge.
`domain`	No	The company domain.
`dry_run`	No	Return only meta with the estimate. Costs nothing.
`provider`	No	Ask one verified work email lookup instead of the waterfall, including a named finder the waterfall skips, for one more try after a NoData.
`last_name`	No
`first_name`	No
`max_credits`	No	Refuse with BudgetExceeded if the estimate is higher.

Output Schema

Name	Required	Description
`meta`	Yes
`email`	No
`error`	No
`hints`	Yes
`phone`	No
`domain`	No
`sources`	No	Pages where the finder saw the address; empty when it inferred it or does not say.
`twitter`	No	X (Twitter) handle, without the @.
`found_by`	No	The provider that found it.
`position`	No
`last_name`	No
`confidence`	No
`first_name`	No
`linkedin_url`	No
`verification_status`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedNov 7, 2026

changedOutput schema / properties / meta / properties / credits_remaining / description

Previous value: -"The workspace's credits left after this call. null when the call did not check the balance (free tools, cache hits, dry runs, tasks) or the balance has no limit."New value: +"The workspace's credits left after this call. null when the call did not check the balance (free tools, cache hits, dry runs, tasks) or the balance has no limit. Leaves out credits held for calls still running, so it can dip during parallel calls and come back; credits_charged is what this call cost."

Changed1 schema field changedNov 2, 2026

changedInput schema / properties / provider / description

Previous value: -"Ask one finder instead of the waterfall: findymail, icypeas, or hunter, which the waterfall skips, for one more try after a NoData."New value: +"Ask one verified work email lookup instead of the waterfall, including a named finder the waterfall skips, for one more try after a NoData."

Changed1 schema field changedNov 1, 2026

addedOutput schema / properties / meta / properties / feedback_request

Added value: +{
+  "additionalProperties": false,
+  "description": "Once per workspace: after the task, ask the user once for feedback and send any answer with submit_feedback.",
+  "properties": {
+    "message": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "message"
+  ],
+  "type": "object"
+}

Changed1 schema field changedOct 23, 2026

changedOutput schema / properties / meta / properties / credits_notice / description

Previous value: -"A free workspace is low on credits, at most once a day. Tell the user once."New value: +"The workspace is low on credits, at most once a day. Tell the user once."

Changed2 schema fields changedOct 17, 2026

changedInput schema / properties / id / description

Previous value: -"A person id from leads_search_people."New value: +"The LinkedIn profile URL a leads_search_people row gives as id. Alone, a paid profile lookup fills the name and domain, so pass the row's first_name, last_name and company_domain (as domain) with it. Anything else is InvalidTarget at no charge."

changedInput schema / properties / provider / description

Previous value: -"Ask one finder instead of the waterfall: findymail, icypeas, or hunter, which the waterfall skips."New value: +"Ask one finder instead of the waterfall: findymail, icypeas, or hunter, which the waterfall skips, for one more try after a NoData."

Changed13 schema fields changedOct 17, 2026

removedInput schema / $schema

Removed value: -"https://json-schema.org/draft/2020-12/schema"

removedInput schema / properties / max_credits / maximum
```
Removed value: -9007199254740991
```

changedInput schema / properties / provider / description

Previous value: -"Skip the waterfall and ask one finder: findymail, hunter or icypeas."New value: +"Ask one finder instead of the waterfall: findymail, icypeas, or hunter, which the waterfall skips."

removedOutput schema / $schema

Removed value: -"https://json-schema.org/draft/2020-12/schema"

addedOutput schema / properties / error / additionalProperties
```
Added value: +{}
```

removedOutput schema / properties / error / oneOf

Removed value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "BudgetExceeded",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "max_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "est_credits",
-      "max_credits",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "billing_url": {
-        "type": "string"
-      },
-      "error": {
-        "const": "InsufficientCredits",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "upgrade_url": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "est_credits",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "NoData",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "InvalidTarget",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "target": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "target",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "InvalidProvider",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "provider": {
-        "type": "string"
-      },
-      "valid_providers": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
-      }
-    },
-    "required": [
-      "error",
-      "provider",
-      "valid_providers",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "ProviderUnavailable",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "provider": {
-        "type": "string"
-      },
-      "retry_after_s": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "provider",
-      "retry_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "ConcurrencyLimit",
-        "type": "string"
-      },
-      "limit": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "retry_after_s": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "limit",
-      "retry_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "cap": {
-        "type": "number"
-      },
-      "error": {
-        "const": "SpendCapReached",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "period": {
-        "enum": [
-          "day",
-          "month"
-        ],
-        "type": "string"
-      },
-      "resets_at": {
-        "type": "string"
-      },
-      "spent": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "period",
-      "cap",
-      "spent",
-      "est_credits",
-      "resets_at",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "TaskFailed",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "task_id": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "task_id",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "TaskPending",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "poll_after_s": {
-        "type": "number"
-      },
-      "task_id": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "task_id",
-      "poll_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "connect_url": {
-        "type": "string"
-      },
-      "engine": {
-        "type": "string"
-      },
-      "error": {
-        "const": "NotConnected",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "engine",
-      "connect_url",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "engine": {
-        "type": "string"
-      },
-      "error": {
-        "const": "EngineMisconfigured",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "engine",
-      "message"
-    ],
-    "type": "object"
-  }
-]

addedOutput schema / properties / error / properties

Added value: +{
+  "error": {
+    "enum": [
+      "BudgetExceeded",
+      "InsufficientCredits",
+      "NoData",
+      "InvalidTarget",
+      "InvalidProvider",
+      "ProviderUnavailable",
+      "ConcurrencyLimit",
+      "SpendCapReached",
+      "TaskFailed",
+      "TaskPending",
+      "NotConnected",
+      "EngineMisconfigured"
+    ],
+    "type": "string"
+  },
+  "message": {
+    "type": "string"
+  }
+}

addedOutput schema / properties / error / required
```
Added value: +[
+  "error",
+  "message"
+]
```
addedOutput schema / properties / error / type
```
Added value: +"object"
```

removedOutput schema / properties / errors

Removed value: -{
-  "description": "Per-input failures of a batch call.",
-  "items": {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "oneOf": [
-          {
-            "additionalProperties": false,
-            "properties": {
-              "error": {
-                "const": "BudgetExceeded",
-                "type": "string"
-              },
-              "est_credits": {
-                "type": "number"
-              },
-              "max_credits": {
-                "type": "number"
-              },
-              "message": {
-                "type": "string"
-              }
-            },
-            "required": [
-              "error",
-              "est_credits",
-              "max_credits",
-              "message"
-            ],
-            "type": "object"
-          },
-          {
-            "additionalProperties": false,
-            "properties": {
-              "billing_url": {
-                "type": "string"
-              },
-              "error": {
-                "const": "InsufficientCredits",
-                "type": "string"
-              },
-              "est_credits": {
-                "type": "number"
-              },
-              "message": {
-                "type": "string"
-              },
-              "upgrade_url": {
-                "type": "string"
-              }
-            },
-            "required": [
-              "error",
-              "est_credits",
-              "message"
-            ],
-            "type": "object"
-          },
-          {
-            "additionalProperties": false,
-            "properties": {
-              "error": {
-                "const": "NoData",
-                "type": "string"
-              },
-              "message": {
-                "type": "string"
-              }
-            },
-            "required": [
-              "error",
-              "message"
-            ],
-            "type": "object"
-          },
-          {
-            "additionalProperties": false,
-            "properties": {
-              "error": {
-                "const": "InvalidTarget",
-                "type": "string"
-              },
-              "message": {
-                "type": "string"
-              },
-              "target": {
-                "type": "string"
-              }
-            },
-            "required": [
-              "error",
-              "target",
-              "message"
-            ],
-            "type": "object"
-          },
-          {
-            "additionalProperties": false,
-            "properties": {
-              "error": {
-                "const": "InvalidProvider",
-                "type": "string"
-              },
-              "message": {
-                "type": "string"
-              },
-              "provider": {
-                "type": "string"
-              },
-              "valid_providers": {
-                "items": {
-                  "type": "string"
-                },
-                "type": "array"
-              }
-            },
-            "required": [
-              "error",
-              "provider",
-              "valid_providers",
-              "message"
-            ],
-            "type": "object"
-          },
-          {
-            "additionalProperties": false,
-            "properties": {
-              "error": {
-                "const": "ProviderUnavailable",
-                "type": "string"
-              },
-              "message": {
-                "type": "string"
-              },
-              "provider": {
-                "type": "string"
-              },
-              "retry_after_s": {
-                "type": "number"
-              }
-            },
-            "required": [
-              "error",
-              "provider",
-              "retry_after_s",
-              "message"
-            ],
-            "type": "object"
-          },
-          {
-            "additionalProperties": false,
-            "properties": {
-              "error": {
-                "const": "ConcurrencyLimit",
-                "type": "string"
-              },
-              "limit": {
-                "type": "number"
-              },
-              "message": {
-                "type": "string"
-              },
-              "retry_after_s": {
-                "type": "number"
-              }
-            },
-            "required": [
-              "error",
-              "limit",
-              "retry_after_s",
-              "message"
-            ],
-            "type": "object"
-          },
-          {
-            "additionalProperties": false,
-            "properties": {
-              "cap": {
-                "type": "number"
-              },
-              "error": {
-                "const": "SpendCapReached",
-                "type": "string"
-              },
-              "est_credits": {
-                "type": "number"
-              },
-              "message": {
-                "type": "string"
-              },
-              "period": {
-                "enum": [
-                  "day",
-                  "month"
-                ],
-                "type": "string"
-              },
-              "resets_at": {
-                "type": "string"
-              },
-              "spent": {
-                "type": "number"
-              }
-            },
-            "required": [
-              "error",
-              "period",
-              "cap",
-              "spent",
-              "est_credits",
-              "resets_at",
-              "message"
-            ],
-            "type": "object"
-          },
-          {
-            "additionalProperties": false,
-            "properties": {
-              "error": {
-                "const": "TaskFailed",
-                "type": "string"
-              },
-              "message": {
-                "type": "string"
-              },
-              "task_id": {
-                "type": "string"
-              }
-            },
-            "required": [
-              "error",
-              "task_id",
-              "message"
-            ],
-            "type": "object"
-          },
-          {
-            "additionalProperties": false,
-            "properties": {
-              "error": {
-                "const": "TaskPending",
-                "type": "string"
-              },
-              "message": {
-                "type": "string"
-              },
-              "poll_after_s": {
-                "type": "number"
-              },
-              "task_id": {
-                "type": "string"
-              }
-            },
-            "required": [
-              "error",
-              "task_id",
-              "poll_after_s",
-              "message"
-            ],
-            "type": "object"
-          },
-          {
-            "additionalProperties": false,
-            "properties": {
-              "connect_url": {
-                "type": "string"
-              },
-              "engine": {
-                "type": "string"
-              },
-              "error": {
-                "const": "NotConnected",
-                "type": "string"
-              },
-              "message": {
-                "type": "string"
-              }
-            },
-            "required": [
-              "error",
-              "engine",
-              "connect_url",
-              "message"
-            ],
-            "type": "object"
-          },
-          {
-            "additionalProperties": false,
-            "properties": {
-              "engine": {
-                "type": "string"
-              },
-              "error": {
-                "const": "EngineMisconfigured",
-                "type": "string"
-              },
-              "message": {
-                "type": "string"
-              }
-            },
-            "required": [
-              "error",
-              "engine",
-              "message"
-            ],
-            "type": "object"
-          }
-        ]
-      },
-      "input": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "input",
-      "error"
-    ],
-    "type": "object"
-  },
-  "type": "array"
-}

changedOutput schema / properties / meta / properties / rows_available / anyOf

Previous value: -[
-  {
-    "maximum": 9007199254740991,
-    "minimum": -9007199254740991,
-    "type": "integer"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "type": "integer"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / meta / properties / rows_returned / maximum
```
Removed value: -9007199254740991
```
removedOutput schema / properties / meta / properties / rows_returned / minimum
```
Removed value: --9007199254740991
```

Changed3 schema fields changedOct 17, 2026

addedOutput schema / properties / meta / properties / credits_notice

Added value: +{
+  "additionalProperties": false,
+  "description": "A free workspace is low on credits, at most once a day. Tell the user once.",
+  "properties": {
+    "message": {
+      "type": "string"
+    },
+    "resets_at": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "upgrade_url": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "upgrade_url",
+    "resets_at",
+    "message"
+  ],
+  "type": "object"
+}

addedOutput schema / properties / meta / properties / credits_remaining

Added value: +{
+  "description": "The workspace's credits left after this call. null when the call did not check the balance (free tools, cache hits, dry runs, tasks) or the balance has no limit.",
+  "type": [
+    "number",
+    "null"
+  ]
+}

changedOutput schema / properties / meta / required

Previous value: -[
-  "provider",
-  "credits_charged",
-  "est_credits",
-  "cached",
-  "data_as_of",
-  "rows_returned",
-  "rows_available",
-  "cursor",
-  "request_id"
-]New value: +[
+  "provider",
+  "credits_charged",
+  "est_credits",
+  "cached",
+  "data_as_of",
+  "rows_returned",
+  "rows_available",
+  "cursor",
+  "request_id",
+  "credits_remaining"
+]

Changed5 schema fields changedOct 13, 2026

addedOutput schema / properties / linkedin_url

Added value: +{
+  "type": [
+    "string",
+    "null"
+  ]
+}

addedOutput schema / properties / phone

Added value: +{
+  "type": [
+    "string",
+    "null"
+  ]
+}

addedOutput schema / properties / position

Added value: +{
+  "type": [
+    "string",
+    "null"
+  ]
+}

addedOutput schema / properties / sources

Added value: +{
+  "description": "Pages where the finder saw the address; empty when it inferred it or does not say.",
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "last_seen_at": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "url": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "url",
+      "last_seen_at"
+    ],
+    "type": "object"
+  },
+  "type": "array"
+}

addedOutput schema / properties / twitter

Added value: +{
+  "description": "X (Twitter) handle, without the @.",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Changed2 schema fields changedOct 8, 2026

changedOutput schema / properties / error / oneOf

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "BudgetExceeded",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "max_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "est_credits",
-      "max_credits",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "billing_url": {
-        "type": "string"
-      },
-      "error": {
-        "const": "InsufficientCredits",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "upgrade_url": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "est_credits",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "NoData",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "InvalidTarget",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "target": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "target",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "ProviderUnavailable",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "provider": {
-        "type": "string"
-      },
-      "retry_after_s": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "provider",
-      "retry_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "ConcurrencyLimit",
-        "type": "string"
-      },
-      "limit": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "retry_after_s": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "limit",
-      "retry_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "cap": {
-        "type": "number"
-      },
-      "error": {
-        "const": "SpendCapReached",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "period": {
-        "enum": [
-          "day",
-          "month"
-        ],
-        "type": "string"
-      },
-      "resets_at": {
-        "type": "string"
-      },
-      "spent": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "period",
-      "cap",
-      "spent",
-      "est_credits",
-      "resets_at",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "TaskFailed",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "task_id": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "task_id",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "TaskPending",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "poll_after_s": {
-        "type": "number"
-      },
-      "task_id": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "task_id",
-      "poll_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "connect_url": {
-        "type": "string"
-      },
-      "engine": {
-        "type": "string"
-      },
-      "error": {
-        "const": "NotConnected",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "engine",
-      "connect_url",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "engine": {
-        "type": "string"
-      },
-      "error": {
-        "const": "EngineMisconfigured",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "engine",
-      "message"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "BudgetExceeded",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "max_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "est_credits",
+      "max_credits",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "billing_url": {
+        "type": "string"
+      },
+      "error": {
+        "const": "InsufficientCredits",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "upgrade_url": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "est_credits",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "NoData",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "InvalidTarget",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "target": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "target",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "InvalidProvider",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "provider": {
+        "type": "string"
+      },
+      "valid_providers": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      }
+    },
+    "required": [
+      "error",
+      "provider",
+      "valid_providers",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "ProviderUnavailable",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "provider": {
+        "type": "string"
+      },
+      "retry_after_s": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "provider",
+      "retry_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "ConcurrencyLimit",
+        "type": "string"
+      },
+      "limit": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "retry_after_s": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "limit",
+      "retry_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "cap": {
+        "type": "number"
+      },
+      "error": {
+        "const": "SpendCapReached",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "period": {
+        "enum": [
+          "day",
+          "month"
+        ],
+        "type": "string"
+      },
+      "resets_at": {
+        "type": "string"
+      },
+      "spent": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "period",
+      "cap",
+      "spent",
+      "est_credits",
+      "resets_at",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "TaskFailed",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "task_id": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "task_id",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "TaskPending",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "poll_after_s": {
+        "type": "number"
+      },
+      "task_id": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "task_id",
+      "poll_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "connect_url": {
+        "type": "string"
+      },
+      "engine": {
+        "type": "string"
+      },
+      "error": {
+        "const": "NotConnected",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "engine",
+      "connect_url",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "engine": {
+        "type": "string"
+      },
+      "error": {
+        "const": "EngineMisconfigured",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "engine",
+      "message"
+    ],
+    "type": "object"
+  }
+]

changedOutput schema / properties / errors / items / properties / error / oneOf

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "BudgetExceeded",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "max_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "est_credits",
-      "max_credits",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "billing_url": {
-        "type": "string"
-      },
-      "error": {
-        "const": "InsufficientCredits",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "upgrade_url": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "est_credits",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "NoData",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "InvalidTarget",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "target": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "target",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "ProviderUnavailable",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "provider": {
-        "type": "string"
-      },
-      "retry_after_s": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "provider",
-      "retry_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "ConcurrencyLimit",
-        "type": "string"
-      },
-      "limit": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "retry_after_s": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "limit",
-      "retry_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "cap": {
-        "type": "number"
-      },
-      "error": {
-        "const": "SpendCapReached",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "period": {
-        "enum": [
-          "day",
-          "month"
-        ],
-        "type": "string"
-      },
-      "resets_at": {
-        "type": "string"
-      },
-      "spent": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "period",
-      "cap",
-      "spent",
-      "est_credits",
-      "resets_at",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "TaskFailed",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "task_id": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "task_id",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "TaskPending",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "poll_after_s": {
-        "type": "number"
-      },
-      "task_id": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "task_id",
-      "poll_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "connect_url": {
-        "type": "string"
-      },
-      "engine": {
-        "type": "string"
-      },
-      "error": {
-        "const": "NotConnected",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "engine",
-      "connect_url",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "engine": {
-        "type": "string"
-      },
-      "error": {
-        "const": "EngineMisconfigured",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "engine",
-      "message"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "BudgetExceeded",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "max_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "est_credits",
+      "max_credits",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "billing_url": {
+        "type": "string"
+      },
+      "error": {
+        "const": "InsufficientCredits",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "upgrade_url": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "est_credits",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "NoData",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "InvalidTarget",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "target": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "target",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "InvalidProvider",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "provider": {
+        "type": "string"
+      },
+      "valid_providers": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      }
+    },
+    "required": [
+      "error",
+      "provider",
+      "valid_providers",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "ProviderUnavailable",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "provider": {
+        "type": "string"
+      },
+      "retry_after_s": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "provider",
+      "retry_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "ConcurrencyLimit",
+        "type": "string"
+      },
+      "limit": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "retry_after_s": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "limit",
+      "retry_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "cap": {
+        "type": "number"
+      },
+      "error": {
+        "const": "SpendCapReached",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "period": {
+        "enum": [
+          "day",
+          "month"
+        ],
+        "type": "string"
+      },
+      "resets_at": {
+        "type": "string"
+      },
+      "spent": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "period",
+      "cap",
+      "spent",
+      "est_credits",
+      "resets_at",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "TaskFailed",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "task_id": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "task_id",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "TaskPending",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "poll_after_s": {
+        "type": "number"
+      },
+      "task_id": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "task_id",
+      "poll_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "connect_url": {
+        "type": "string"
+      },
+      "engine": {
+        "type": "string"
+      },
+      "error": {
+        "const": "NotConnected",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "engine",
+      "connect_url",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "engine": {
+        "type": "string"
+      },
+      "error": {
+        "const": "EngineMisconfigured",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "engine",
+      "message"
+    ],
+    "type": "object"
+  }
+]

Changed2 schema fields changedOct 6, 2026

changedOutput schema / properties / error / oneOf

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "BudgetExceeded",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "max_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "est_credits",
-      "max_credits",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "InsufficientCredits",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "est_credits",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "NoData",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "InvalidTarget",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "target": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "target",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "ProviderUnavailable",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "provider": {
-        "type": "string"
-      },
-      "retry_after_s": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "provider",
-      "retry_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "ConcurrencyLimit",
-        "type": "string"
-      },
-      "limit": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "retry_after_s": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "limit",
-      "retry_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "cap": {
-        "type": "number"
-      },
-      "error": {
-        "const": "SpendCapReached",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "period": {
-        "enum": [
-          "day",
-          "month"
-        ],
-        "type": "string"
-      },
-      "resets_at": {
-        "type": "string"
-      },
-      "spent": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "period",
-      "cap",
-      "spent",
-      "est_credits",
-      "resets_at",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "TaskFailed",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "task_id": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "task_id",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "TaskPending",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "poll_after_s": {
-        "type": "number"
-      },
-      "task_id": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "task_id",
-      "poll_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "connect_url": {
-        "type": "string"
-      },
-      "engine": {
-        "type": "string"
-      },
-      "error": {
-        "const": "NotConnected",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "engine",
-      "connect_url",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "engine": {
-        "type": "string"
-      },
-      "error": {
-        "const": "EngineMisconfigured",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "engine",
-      "message"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "BudgetExceeded",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "max_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "est_credits",
+      "max_credits",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "billing_url": {
+        "type": "string"
+      },
+      "error": {
+        "const": "InsufficientCredits",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "upgrade_url": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "est_credits",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "NoData",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "InvalidTarget",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "target": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "target",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "ProviderUnavailable",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "provider": {
+        "type": "string"
+      },
+      "retry_after_s": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "provider",
+      "retry_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "ConcurrencyLimit",
+        "type": "string"
+      },
+      "limit": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "retry_after_s": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "limit",
+      "retry_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "cap": {
+        "type": "number"
+      },
+      "error": {
+        "const": "SpendCapReached",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "period": {
+        "enum": [
+          "day",
+          "month"
+        ],
+        "type": "string"
+      },
+      "resets_at": {
+        "type": "string"
+      },
+      "spent": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "period",
+      "cap",
+      "spent",
+      "est_credits",
+      "resets_at",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "TaskFailed",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "task_id": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "task_id",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "TaskPending",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "poll_after_s": {
+        "type": "number"
+      },
+      "task_id": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "task_id",
+      "poll_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "connect_url": {
+        "type": "string"
+      },
+      "engine": {
+        "type": "string"
+      },
+      "error": {
+        "const": "NotConnected",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "engine",
+      "connect_url",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "engine": {
+        "type": "string"
+      },
+      "error": {
+        "const": "EngineMisconfigured",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "engine",
+      "message"
+    ],
+    "type": "object"
+  }
+]

changedOutput schema / properties / errors / items / properties / error / oneOf

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "BudgetExceeded",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "max_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "est_credits",
-      "max_credits",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "InsufficientCredits",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "est_credits",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "NoData",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "InvalidTarget",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "target": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "target",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "ProviderUnavailable",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "provider": {
-        "type": "string"
-      },
-      "retry_after_s": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "provider",
-      "retry_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "ConcurrencyLimit",
-        "type": "string"
-      },
-      "limit": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "retry_after_s": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "limit",
-      "retry_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "cap": {
-        "type": "number"
-      },
-      "error": {
-        "const": "SpendCapReached",
-        "type": "string"
-      },
-      "est_credits": {
-        "type": "number"
-      },
-      "message": {
-        "type": "string"
-      },
-      "period": {
-        "enum": [
-          "day",
-          "month"
-        ],
-        "type": "string"
-      },
-      "resets_at": {
-        "type": "string"
-      },
-      "spent": {
-        "type": "number"
-      }
-    },
-    "required": [
-      "error",
-      "period",
-      "cap",
-      "spent",
-      "est_credits",
-      "resets_at",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "TaskFailed",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "task_id": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "task_id",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "const": "TaskPending",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "poll_after_s": {
-        "type": "number"
-      },
-      "task_id": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "task_id",
-      "poll_after_s",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "connect_url": {
-        "type": "string"
-      },
-      "engine": {
-        "type": "string"
-      },
-      "error": {
-        "const": "NotConnected",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "engine",
-      "connect_url",
-      "message"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "engine": {
-        "type": "string"
-      },
-      "error": {
-        "const": "EngineMisconfigured",
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "engine",
-      "message"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "BudgetExceeded",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "max_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "est_credits",
+      "max_credits",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "billing_url": {
+        "type": "string"
+      },
+      "error": {
+        "const": "InsufficientCredits",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "upgrade_url": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "est_credits",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "NoData",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "InvalidTarget",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "target": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "target",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "ProviderUnavailable",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "provider": {
+        "type": "string"
+      },
+      "retry_after_s": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "provider",
+      "retry_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "ConcurrencyLimit",
+        "type": "string"
+      },
+      "limit": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "retry_after_s": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "limit",
+      "retry_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "cap": {
+        "type": "number"
+      },
+      "error": {
+        "const": "SpendCapReached",
+        "type": "string"
+      },
+      "est_credits": {
+        "type": "number"
+      },
+      "message": {
+        "type": "string"
+      },
+      "period": {
+        "enum": [
+          "day",
+          "month"
+        ],
+        "type": "string"
+      },
+      "resets_at": {
+        "type": "string"
+      },
+      "spent": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "error",
+      "period",
+      "cap",
+      "spent",
+      "est_credits",
+      "resets_at",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "TaskFailed",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "task_id": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "task_id",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "const": "TaskPending",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      },
+      "poll_after_s": {
+        "type": "number"
+      },
+      "task_id": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "task_id",
+      "poll_after_s",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "connect_url": {
+        "type": "string"
+      },
+      "engine": {
+        "type": "string"
+      },
+      "error": {
+        "const": "NotConnected",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "engine",
+      "connect_url",
+      "message"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "engine": {
+        "type": "string"
+      },
+      "error": {
+        "const": "EngineMisconfigured",
+        "type": "string"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "engine",
+      "message"
+    ],
+    "type": "object"
+  }
+]

Changed1 schema field changedOct 6, 2026

addedOutput schema / properties / meta / properties / providers_tried

Added value: +{
+  "description": "leads_get_email only: every source asked, in order.",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

Changed1 schema field changedOct 6, 2026
- changedInput schema / properties / id / maxLength
```
Previous value: -64New value: +512
```
First observedOct 2, 2026

TDQS

A4.8/5.0

Behavior5/5

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

Annotations declare readOnly/idempotent/openWorld, and the description adds substantial context beyond them: waterfall-with-first-verified-hit behavior, credit cost (7, 31 with certain providers, +9 for id-without-name), zero charge on NoData, 90-day caching, ProviderUnavailable semantics on timeout, and a careful explanation of why verification_status can read 'valid' with null confidence. Nothing here contradicts readOnlyHint; a paid read is still a read.

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 description is long but strongly front-loaded and sectioned (purpose, Use when, Not for, Returns, Workflow, Cost, Example), so an agent can scan to the needed part. The 'Returns' paragraph is dense and partly redundant given an output schema exists, and the verification_status explanation of source-verdict vs. verifier verdict, while useful, is the wordiest passage and could be tightened.

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?

For a single-purpose but behaviorally complex paid lookup, the definition covers inputs, cost model, cache lifetime, failure modes (NoData, ProviderUnavailable, BudgetExceeded, InvalidTarget), and nullability of optional return fields. Even with an output schema present, the explanation of confidence/verification_status quirks adds interpretation the schema alone would not convey.

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?

With 71% schema coverage the schema already documents id, dry_run, max_credits and provider, so the baseline is met by structure. The description adds genuine meaning the schema does not: the accepted input combinations ('id, or first_name + last_name + domain, or both') and the cost consequence of supplying an id without a name, which is decisive for how an agent should fill optional fields. It does not restate dry_run or max_credits, but those are adequately covered in-schema.

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?

The opening states a specific verb and resource ('Find and verify the work email of one named person') and further differentiates itself as 'the only paid reveal keyed by a person', distinguishing it from the domain-keyed and status-keyed siblings. An agent can identify what this tool does and how it differs from the other leads_* tools without reading any schema.

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

Usage Guidelines5/5

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

Explicit 'Use when' with a natural-language example ('get me the email of Jordan Blake at acme.com') plus a 'Not for' block that names three alternatives and the condition that selects each: leads_get_domain_emails for no-name cases, leads_get_email_status for addresses already held, leads_get_person for role/history. This is the full when/when-not/alternative triad.

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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