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meta_ads_images_upload_file

Uploads a local image file to the Meta Ads account library and returns an image_hash for building creatives. Use it when the image sits on the agent's disk rather than a public URL.

Instructions

Uploads an image from a local file path to the Meta Ads account library. Returns the image_hash to reference in creative-construction tools. Mutating — the asset is persisted. Use this when the image lives on the agent's local disk; for public-URL uploads use meta_ads_creatives_upload_image instead.

Input Schema

NameRequiredDescriptionDefault
nameNoOptional label stored with the uploaded asset. Used only for library organization.
reasonNoWhy this change is being made: one or two sentences naming the evidence and the expected effect. Stored in the journal and on the action_log entry this call produces, for the operator and the next session.
approvalNoExternal approval this change carries out (recorded and shown, never verified)
expectedNoExpected effects [{metric, direction, target?, horizon_days?, primary?}], exactly one primary:true when several; metric cpa/cpc/cpl/cpm/conversions/cvr/ctr/roas/cost/spend/clicks/impressions; direction up/down/hold.
file_pathYesPath to the image file on the agent's filesystem. Meta accepts JPG, PNG, and GIF up to 30 MB.
account_idNoMeta Ads account ID in the format 'act_XXXXXXXXXX' (e.g. 'act_1234567890'). Optional — falls back to META_ADS_ACCOUNT_ID from the configured credentials. The leading 'act_' prefix is required.
decision_idNoA proposed decision this change carries out.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv0.33.0
    • changedInput schema / properties / expected / description
      Previous value: -"Expected effects [{metric, direction, target?, horizon_days?}]; metric cpa/cpc/cpl/cpm/conversions/cvr/ctr/roas/cost/spend/clicks/impressions; direction up/down/hold."New value: +"Expected effects [{metric, direction, target?, horizon_days?, primary?}], exactly one primary:true when several; metric cpa/cpc/cpl/cpm/conversions/cvr/ctr/roas/cost/spend/clicks/impressions; direction up/down/hold."
  2. Changed1 schema field changedv0.28.0
    • addedInput schema / properties / approval
      Added value: +{
      +  "additionalProperties": false,
      +  "description": "External approval this change carries out (recorded and shown, never verified)",
      +  "properties": {
      +    "approved_at": {
      +      "maxLength": 64,
      +      "type": "string"
      +    },
      +    "approved_by": {
      +      "maxLength": 80,
      +      "type": "string"
      +    },
      +    "reference": {
      +      "maxLength": 128,
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "reference",
      +    "approved_by",
      +    "approved_at"
      +  ],
      +  "type": "object"
      +}
  3. Changed2 schema fields changedv0.26.0
    • addedInput schema / properties / decision_id
      Added value: +{
      +  "description": "A proposed decision this change carries out.",
      +  "maxLength": 128,
      +  "minLength": 1,
      +  "type": "string"
      +}
    • addedInput schema / properties / expected
      Added value: +{
      +  "description": "Expected effects [{metric, direction, target?, horizon_days?}]; metric cpa/cpc/cpl/cpm/conversions/cvr/ctr/roas/cost/spend/clicks/impressions; direction up/down/hold.",
      +  "maxItems": 12,
      +  "type": "array"
      +}
  4. Changed1 schema field changedv0.20.0
    • addedInput schema / properties / reason
      Added value: +{
      +  "description": "Why this change is being made: one or two sentences naming the evidence and the expected effect. Stored in the journal and on the action_log entry this call produces, for the operator and the next session.",
      +  "maxLength": 500,
      +  "type": "string"
      +}
  5. Changed1 schema field changedv0.10.37
    • addedInput schema / additionalProperties
      Added value: +false
  6. Addedv0.9.12
  7. Removedv0.9.6
  8. Addedv0.9.2
  9. Removedv0.9.1
  10. Addedv1.0.5

TDQS

A4.4/5.0
Behavior4/5

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

No annotations are provided, so the description carries the full burden. It discloses the key behavioral trait — 'Mutating — the asset is persisted' — and the return value ('Returns the image_hash to reference in creative-construction tools'), which is important for chaining. It does not cover auth requirements or failure modes, keeping it below a 5.

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?

Three sentences, front-loaded with purpose, then return value and mutation semantics, then the disambiguation rule. Every sentence earns its place with no filler.

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?

For a 7-parameter tool with nested objects and no output schema, the description supplies the return value (image_hash) and mutation consequence, which the schema does not. With 100% schema coverage the remaining governance parameters are adequately documented elsewhere; a slight gap remains around approval/expected semantics at the description level, but the tool is callable correctly as-is.

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 schema already documents every parameter fully, including file_path format constraints (JPG/PNG/GIF up to 30 MB) and the approval/expected governance fields. The description adds no parameter-level detail beyond what the schema provides, so the baseline 3 applies.

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 ('Uploads an image from a local file path to the Meta Ads account library'), and explicitly names the sibling it is not ('for public-URL uploads use meta_ads_creatives_upload_image instead'). An agent can distinguish it from both meta_ads_creatives_upload_image and meta_ads_videos_upload_file 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 an explicit when-to-use condition ('when the image lives on the agent's local disk') and a named alternative with its own condition ('for public-URL uploads use meta_ads_creatives_upload_image instead'). Nothing is left to inference about which sibling to pick.

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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