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OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Remote

meta get video sources

meta_get_video_sources
Read-onlyIdempotent

Resolve fresh signed download URLs and thumbnails for specific Meta ad videos at download time, since returned links expire quickly.

Instructions

Resolve fresh download URLs (source) and thumbnails for specific ad videos. Call this at download time: the returned URLs are signed and expire quickly.

Input Schema

NameRequiredDescriptionDefault
pageIdNoOwning Page ID from the ad creative. Allows Page-token fallback even when the user token cannot read the video node.
videoIdsYesVideo IDs to resolve (at most 10 per call, one Graph request each)
adAccountIdYesAd account that owns the videos, used for scoping and rate limits

Output Schema

NameRequiredDescriptionDefault
resultYesOriginal tool result: parsed JSON when the text is JSON, otherwise the text or multiple MCP content blocks. Provider fields depend on the selected query.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv2.1.1
    • removedInput schema / additionalProperties
      Removed value: -false
    • changedOutput schema / properties / result / anyOf
      Previous value: -[
-  {
-    "additionalProperties": true,
-    "properties": {},
-    "type": "object"
-  },
-  {
-    "items": {},
-    "type": "array"
-  },
-  {
-    "type": "string"
-  },
-  {
-    "type": "number"
-  },
-  {
-    "type": "boolean"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {},
+    "type": "object"
+  },
+  {
+    "items": {},
+    "type": "array"
+  },
+  {
+    "type": "string"
+  },
+  {
+    "type": "number"
+  },
+  {
+    "type": "boolean"
+  },
+  {
+    "type": "null"
+  }
+]
  2. First observedv2.0.1

TDQS

A4.1/5.0
Behavior4/5

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

Annotations already declare readOnly, idempotent, openWorld, and non-destructive behavior. The description adds important context beyond annotations by explaining that returned URLs are signed and short-lived, which directly affects how the agent should sequence the call.

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

Conciseness5/5

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

Two tightly written sentences front-load the core action and follow with the critical operational constraint. Every clause earns its place.

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?

With rich annotations, full schema coverage, and an output schema, the description supplies the key missing behavioral context: these URLs are signed and expire quickly. Nothing essential for correct invocation is absent.

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 the input schema already documents adAccountId, videoIds, and pageId thoroughly. The description reinforces the video-specific download use case but does not add parameter-level semantics beyond what the schema provides.

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 states a specific verb and resource: resolve fresh download URLs (source) and thumbnails for specific ad videos. It is clear enough to distinguish from listing or uploading videos, though it does not explicitly name a sibling tool as the alternative.

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

Usage Guidelines4/5

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

It gives clear timing guidance: call this at download time because the returned URLs are signed and expire quickly. This is strong contextual usage guidance, though it does not explicitly say when not to use it or name alternatives.

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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