Spytrend

Find related ads

find_similar_ads

Read-only

Find ads related to one source ad by an explicit overlap basis: fanpage (same Facebook page_id) or domain (same exact landing_domain). This is entity overlap, NOT visual similarity of the material; use find_similar_creatives for that. The source ad is excluded from data, but pagination.total remains the upstream overlap-candidate count before that exclusion; source_excluded and total_semantics make this explicit instead of fabricating an adjusted exact total. Metadata only, cursor-paginated. QUOTA: 1 token per delivered row (default page 20).

Input Schema

TableJSON Schema

Name	Required	Description
`ad_id`	Yes	source ad UUID from search_ads
`basis`	Yes	overlap basis: fanpage (same Facebook page_id) or domain (same exact landing_domain)
`limit`	No	maximum metadata rows (default 20, maximum 200; 1 token per delivered row)
`cursor`	No	pagination cursor returned by the previous call

Output Schema

TableJSON Schema

Name	Required	Description
`data`	No
`error`	No	Present only when isError is true: machine-readable failure. The human explanation stays in content.
`params`	No	Request parameter echo: applied = parameters that shaped this result; normalized = parameters rewritten before applying (alias, type coercion, resolved id); ignored = parameters that were accepted but NOT applied, with the reason.
`pagination`	No
`basis_value`	No
`source_ad_id`	No
`source_excluded`	No
`total_semantics`	No
`similarity_basis`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 3, 2026
- addedOutput schema / properties / data / items / properties / is_cloaked
```
Added value: +{
+  "type": "boolean"
+}
```

Changed3 schema fields changedSep 25, 2026

addedOutput schema / properties / error

Added value: +{
+  "description": "Present only when isError is true: machine-readable failure. The human explanation stays in content.",
+  "properties": {
+    "code": {
+      "description": "fine-grained, stable failure code (e.g. invalid_arguments, backend_busy)",
+      "type": "string"
+    },
+    "kind": {
+      "description": "failure class: invalid_argument, not_found, permission_denied, unauthenticated, quota_exceeded, rate_limited, temporarily_unavailable, unavailable_until_ready, unsupported, internal",
+      "type": "string"
+    },
+    "message": {
+      "description": "the same human text as content[0]",
+      "type": "string"
+    },
+    "outcome": {
+      "description": "activity-feed outcome class",
+      "type": "string"
+    },
+    "param": {
+      "description": "the request parameter the failure is about, when known",
+      "type": "string"
+    },
+    "retry_after_seconds": {
+      "description": "wait this long before retrying",
+      "type": "integer"
+    },
+    "retryable": {
+      "description": "true when repeating the SAME call can succeed (after retry_after_seconds when present)",
+      "type": "boolean"
+    }
+  },
+  "type": "object"
+}

addedOutput schema / properties / params

Added value: +{
+  "description": "Request parameter echo: applied = parameters that shaped this result; normalized = parameters rewritten before applying (alias, type coercion, resolved id); ignored = parameters that were accepted but NOT applied, with the reason.",
+  "properties": {
+    "applied": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "ignored": {
+      "items": {
+        "properties": {
+          "param": {
+            "type": "string"
+          },
+          "reason": {
+            "type": "string"
+          },
+          "to": {
+            "description": "the parameter it was applied as, when renamed",
+            "type": "string"
+          },
+          "value": {
+            "description": "the value actually applied, when rewritten",
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "normalized": {
+      "items": {
+        "properties": {
+          "param": {
+            "type": "string"
+          },
+          "reason": {
+            "type": "string"
+          },
+          "to": {
+            "description": "the parameter it was applied as, when renamed",
+            "type": "string"
+          },
+          "value": {
+            "description": "the value actually applied, when rewritten",
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "source_ad_id",
-  "similarity_basis",
-  "basis_value",
-  "source_excluded",
-  "total_semantics",
-  "data",
-  "pagination"
-]

Changed1 schema field changedSep 18, 2026

addedOutput schema / properties / data / items / properties / webmasters

Added value: +{
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "id": {
+        "type": "string"
+      },
+      "matched_by": {
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "id"
+    ],
+    "type": "object"
+  },
+  "type": [
+    "null",
+    "array"
+  ]
+}

Changed1 schema field changedSep 18, 2026

addedOutput schema / properties / data / items / properties / eu_transparency

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "age_max": {
+      "type": "integer"
+    },
+    "age_min": {
+      "type": "integer"
+    },
+    "beneficiary": {
+      "type": "string"
+    },
+    "breakdown": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "age_range": {
+            "type": "string"
+          },
+          "country": {
+            "type": "string"
+          },
+          "female": {
+            "maximum": 4294967295,
+            "minimum": 0,
+            "type": "integer"
+          },
+          "male": {
+            "maximum": 4294967295,
+            "minimum": 0,
+            "type": "integer"
+          },
+          "unknown": {
+            "maximum": 4294967295,
+            "minimum": 0,
+            "type": "integer"
+          }
+        },
+        "required": [
+          "country",
+          "age_range",
+          "female",
+          "male",
+          "unknown"
+        ],
+        "type": "object"
+      },
+      "type": [
+        "null",
+        "array"
+      ]
+    },
+    "checked_at": {
+      "type": "string"
+    },
+    "eu_total_reach": {
+      "minimum": 0,
+      "type": "integer"
+    },
+    "excluded_locations": {
+      "items": {
+        "type": "string"
+      },
+      "type": [
+        "null",
+        "array"
+      ]
+    },
+    "gender_audience": {
+      "type": "string"
+    },
+    "has_data": {
+      "type": "boolean"
+    },
+    "payer": {
+      "type": "string"
+    },
+    "reach_countries": {
+      "items": {
+        "type": "string"
+      },
+      "type": [
+        "null",
+        "array"
+      ]
+    },
+    "targeted_locations": {
+      "items": {
+        "type": "string"
+      },
+      "type": [
+        "null",
+        "array"
+      ]
+    }
+  },
+  "required": [
+    "has_data",
+    "eu_total_reach"
+  ],
+  "type": [
+    "null",
+    "object"
+  ]
+}

Changed15 schema fields changedSep 10, 2026

addedOutput schema / properties / data / items / properties / creative_destination_domain
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / data / items / properties / creative_destination_url
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / data / items / properties / is_multilang
```
Added value: +{
+  "type": [
+    "null",
+    "boolean"
+  ]
+}
```
addedOutput schema / properties / data / items / properties / media / items / properties / body
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / data / items / properties / media / items / properties / carousel_position
```
Added value: +{
+  "type": [
+    "null",
+    "integer"
+  ]
+}
```
addedOutput schema / properties / data / items / properties / media / items / properties / claimed_domain
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / data / items / properties / media / items / properties / cloaking_detected
```
Added value: +{
+  "type": "boolean"
+}
```

addedOutput schema / properties / data / items / properties / media / items / properties / fallback_urls

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

addedOutput schema / properties / data / items / properties / media / items / properties / is_alive
```
Added value: +{
+  "type": [
+    "null",
+    "boolean"
+  ]
+}
```
addedOutput schema / properties / data / items / properties / media / items / properties / link_url
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / data / items / properties / media / items / properties / title
```
Added value: +{
+  "type": "string"
+}
```

addedOutput schema / properties / data / items / properties / opening_price

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "billing_basis": {
+      "type": "string"
+    },
+    "status": {
+      "type": "string"
+    },
+    "tokens": {
+      "type": [
+        "null",
+        "integer"
+      ]
+    },
+    "unit": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "status",
+    "tokens",
+    "unit",
+    "billing_basis"
+  ],
+  "type": [
+    "null",
+    "object"
+  ]
+}

addedOutput schema / properties / data / items / properties / original_landing_domain
```
Added value: +{
+  "type": "string"
+}
```

addedOutput schema / properties / data / items / properties / primary_creative

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "body": {
+      "type": "string"
+    },
+    "carousel_position": {
+      "type": [
+        "null",
+        "integer"
+      ]
+    },
+    "claimed_domain": {
+      "type": "string"
+    },
+    "cloaking_detected": {
+      "type": "boolean"
+    },
+    "expiring": {
+      "type": "boolean"
+    },
+    "fallback_urls": {
+      "items": {
+        "type": "string"
+      },
+      "type": [
+        "null",
+        "array"
+      ]
+    },
+    "is_alive": {
+      "type": [
+        "null",
+        "boolean"
+      ]
+    },
+    "link_url": {
+      "type": "string"
+    },
+    "media_type": {
+      "type": "string"
+    },
+    "snapshot_url": {
+      "type": "string"
+    },
+    "thumbnail_url": {
+      "type": "string"
+    },
+    "title": {
+      "type": "string"
+    },
+    "url": {
+      "type": "string"
+    }
+  },
+  "type": [
+    "null",
+    "object"
+  ]
+}

addedOutput schema / properties / data / items / properties / primary_creative_selection

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "carousel_position": {
+      "type": [
+        "null",
+        "integer"
+      ]
+    },
+    "reason": {
+      "type": "string"
+    },
+    "status": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "status"
+  ],
+  "type": [
+    "null",
+    "object"
+  ]
+}

First observedSep 2, 2026

TDQS

A4.6/5.0

Behavior5/5

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

Annotations cover the safety profile (readOnly, non-destructive, openWorld), and the description adds substantial behavior beyond that: the source ad is excluded from results, pagination.total reflects the raw upstream candidate count, source_excluded/total_semantics fields expose that distinction, and a per-row token quota is disclosed. That is exactly the extra context annotations cannot carry.

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?

Purpose and the sibling exclusion are front-loaded, and each sentence carries useful content (scope, exclusion semantics, cost, pagination). It is dense with internal jargon (source_excluded, total_semantics) that reads like spec language, but nothing is truly wasted.

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?

An output schema exists, so return shape needn't be explained, yet the description still preempts the one confusing aspect of the output (why total exceeds delivered rows) and discloses quota costs. For a read-only, cursor-paginated lookup the agent has everything needed to call it correctly.

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%, so ad_id, basis, limit and cursor are already documented in the schema at the same level of detail the description repeats. The description adds only marginal param-adjacent value (1 token per delivered row, default page 20), so the baseline 3 is appropriate rather than higher.

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 (find ads related to a source ad) and immediately narrows the mechanism to explicit entity overlap on fanpage/domain. It explicitly distinguishes itself from find_similar_creatives ('NOT visual similarity'), so an agent can separate the two siblings without opening either 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?

Gives both the condition for use (you want fanpage- or domain-overlap candidates) and the explicit alternative (use find_similar_creatives for visual similarity). 'Metadata only, cursor-paginated' further frames the intended invocation context.

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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