build-campaign

name	build-campaign
description	Create a full campaign (campaign + ad sets + ads) from a plain-text description. Parses natural language into structured API calls.
argument-hint	<plain-text campaign description>
allowed-tools	["Read","Bash","AskUserQuestion"]

Spotify Ads API — Full Campaign Builder

Given a plain-text description of an advertising campaign, parse it into structured API calls and create the full campaign hierarchy: Campaign → Ad Sets → Ads.

Setup

1. Read access_token, ad_account_id, and auto_execute from the active platform settings file:
   • Codex: prefer .codex/spotify-ads-api.local.md, then fall back to .claude/spotify-ads-api.local.md.
   • Claude: prefer .claude/spotify-ads-api.local.md, then fall back to .codex/spotify-ads-api.local.md.
2. Base URL: https://api-partner.spotify.com/ads/v3
3. If neither settings file exists, instruct the user to run /spotify-ads-api:configure first.
4. Read the active platform manifest for the plugin version: .codex-plugin/plugin.json on Codex or .claude-plugin/plugin.json on Claude.
5. Set SDK_PRODUCT to codex-plugin on Codex or claude-code-plugin on Claude. Set SDK_HEADER="X-Spotify-Ads-Sdk: $SDK_PRODUCT/$PLUGIN_VERSION" and include -H "$SDK_HEADER" on all API requests.

Step 1: Parse the Campaign Description

Extract the following from the user's plain-text input. If a field is missing or ambiguous, use the defaults noted below. If a required field cannot be inferred, ask the user.

Campaign-level fields

Field	Required	Default
name	yes	—
objective	yes	REACH

Valid objectives: REACH, CLICKS, VIDEO_VIEWS, CONVERSIONS, LEAD_GEN, EVEN_IMPRESSION_DELIVERY, PODCAST_STREAMS, APP_INSTALLS, WEBSITE_VISITS

Ad set-level fields (one or more)

Field	Required	Default	Notes
name	yes	—	2-200 chars
start_time	yes	—	ISO 8601 UTC
end_time	required if LIFETIME	—	ISO 8601 UTC
budget.micro_amount	yes	—	Dollar amount x 1,000,000
budget.type	yes	DAILY	DAILY or LIFETIME
asset_format	yes	AUDIO	AUDIO, VIDEO, IMAGE, or CATALOG
category	yes	—	Valid ADV_X_Y code (fetch from GET /ad_categories if needed)
bid_strategy	yes	MAX_BID	Plain string: MAX_BID, COST_PER_RESULT, AUTOBID, or UNSET
bid_micro_amount	yes with MAX_BID/COST_PER_RESULT	15000000	Bid cap in micro-units. Not required with AUTOBID.
pacing	no	PACING_EVEN	PACING_EVEN or PACING_ASAP
delivery	no	ON	ON or OFF
targets.age_ranges	yes	[{"min":18,"max":54}]	Array of {min, max} objects
targets.geo_targets	yes	{"country_code":"US"}	Flat object with country_code string
targets.platforms	no	["ANDROID","DESKTOP","IOS"]	Valid: ANDROID, DESKTOP, IOS
targets.placements	yes	["MUSIC"]	MUSIC or PODCAST
targets.genders	no	[]	MALE, FEMALE, NON_BINARY

Ad set validation guardrails:

• Reject or ask to correct zero/negative budgets and zero bids. budget.micro_amount and bid_micro_amount must be positive when present.
• Do not include currency in ad set budget; currency is only required in /estimates/audience budget payloads.
• Do not send cost_model, skippable, is_skippable, or ad_platforms in ad set create payloads.
• Only use ANDROID, DESKTOP, and IOS in targets.platforms; never use WEB, MOBILE, or CONNECTED_DEVICE.
• Use min >= 18 for age ranges unless the user explicitly confirms a market/category that allows minors.
• When geo refinements are present (city_ids, dma_ids, postal_code_ids, region_ids), include country_code in the same geo_targets object.
• If bid_strategy=UNSET, omit bid_micro_amount unless the API response or user-provided source explicitly requires it.

Ad-level fields (one or more per ad set)

Field	Required	Notes
name	yes	2-200 chars
tagline	yes	2-40 chars
advertiser_name	yes	2-25 chars
assets.asset_id	yes	UUID — prompt user to select
assets.logo_asset_id	yes	UUID — prompt user to select
assets.companion_asset_id	yes (audio)	UUID — required for AUDIO format ads
call_to_action.key	yes	e.g. SHOP_NOW, LEARN_MORE, LISTEN_NOW, SIGN_UP
call_to_action.clickthrough_url	yes	Landing page URL
delivery	no	ON (default) or OFF

Step 2: Confirm the Parsed Plan

Before making any API calls, present the full parsed plan as a visual tree:

Campaign: "My Campaign" (objective: REACH)
├── Ad Set 1: "Ad Set A" (AUDIO, $75/day, US, ages 25-54, Mar 1 start)
│   └── Ad 1: "My Ad" → SHOP_NOW → example.com
└── Ad Set 2: "Ad Set B" (VIDEO, $500 lifetime, US, ages 18-54, Mar 4–Apr 4)
    └── Ad 2: "My Video Ad" → LEARN_MORE → example.com

Also show a table with all field values for each entity. Ask the user to confirm or adjust.

If the ad category was not specified, ask the user to select one using AskUserQuestion. You can fetch valid categories from GET /ad_categories to present options.

Step 2.5: Validate Audience Size

After the user confirms the plan but before executing API calls, run an audience estimate for each ad set's targeting:

curl -s -w "\nHTTP_STATUS:%{http_code}" -X POST -H "Authorization: Bearer $TOKEN" \
  -H "$SDK_HEADER" \
  -H "Content-Type: application/json" \
  -d '{
    "ad_account_id": "<AD_ACCOUNT_ID>",
    "start_date": "<start_time>",
    "asset_format": "<AUDIO|VIDEO|IMAGE|CATALOG>",
    "objective": "<campaign_objective>",
    "bid_strategy": "<MAX_BID|COST_PER_RESULT|AUTOBID|UNSET>",
    "bid_micro_amount": <bid>,
    "budget": {"micro_amount": <budget>, "type": "<DAILY|LIFETIME>", "currency": "USD"},
    "targets": { <same targets object as the ad set> }
  }' \
  "https://api-partner.spotify.com/ads/v3/estimates/audience"

Important: This endpoint is NOT scoped under /ad_accounts/{id}/ — it's at the top level: POST /estimates/audience. Use the base URL directly followed by /estimates/audience.

Display the estimate results in a summary:

Audience Estimate for "Ad Set A":
  Projected unique users: ~142,000
  Estimated daily reach: 8,500 – 12,000
  Estimated daily impressions: 15,000 – 22,000
  Estimated CPM: $12.50 – $18.00
  Likely to deliver budget: Yes

Convert any CPM micro-amounts to dollars for display.

If the audience is too small (very low projected_unique_users or the API returns a 400 error indicating audience too small), warn the user and suggest:

• Broadening the age range
• Adding more platforms
• Removing restrictive targeting (artist/genre/interest)
• Switching from VIDEO to AUDIO format (lower thresholds)
• Expanding geo targeting

Use AskUserQuestion to ask whether to:

1. Proceed anyway with current targeting
2. Adjust targeting (then re-estimate)
3. Cancel this ad set

Run the estimate for each ad set in the plan before proceeding to Step 3.

Step 3: Prompt for Assets

For each ad, fetch available assets from the account:

curl -s -w "\nHTTP_STATUS:%{http_code}" -H "Authorization: Bearer $TOKEN" \
  -H "$SDK_HEADER" \
  "$BASE_URL/ad_accounts/$AD_ACCOUNT_ID/assets?limit=50&sort_direction=DESC"

Present audio/video assets and image assets separately in tables, and ask the user to pick:

• asset_id — the creative (must match the ad set's asset_format: audio for AUDIO, video for VIDEO, etc.)
• logo_asset_id — a logo image
• companion_asset_id — a companion image (required for AUDIO format ads)

Step 4: Execute API Calls Sequentially

Execute each step in order, passing IDs forward from each response.

4a. Create Campaign

curl -s -w "\nHTTP_STATUS:%{http_code}" -X POST -H "Authorization: Bearer $TOKEN" \
  -H "$SDK_HEADER" \
  -H "Content-Type: application/json" \
  -d '{"name":"...","objective":"..."}' \
  "$BASE_URL/ad_accounts/$AD_ACCOUNT_ID/campaigns"

Extract the campaign id from the response.

4b. Create Ad Sets (using campaign_id from 4a)

For each ad set:

curl -s -w "\nHTTP_STATUS:%{http_code}" -X POST -H "Authorization: Bearer $TOKEN" \
  -H "$SDK_HEADER" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "...",
    "campaign_id": "<from step 4a>",
    "start_time": "...",
    "end_time": "...",
    "budget": {"micro_amount": ..., "type": "..."},
    "asset_format": "...",
    "category": "ADV_X_Y",
    "targets": {
      "age_ranges": [{"min": ..., "max": ...}],
      "geo_targets": {"country_code": "..."},
      "platforms": ["ANDROID", "DESKTOP", "IOS"],
      "placements": ["MUSIC"]
    },
    "bid_strategy": "MAX_BID",
    "bid_micro_amount": ...,
    "pacing": "PACING_EVEN",
    "delivery": "ON"
  }' \
  "$BASE_URL/ad_accounts/$AD_ACCOUNT_ID/ad_sets"

Extract each ad set id for use in ad creation.

4c. Create Ads (using ad_set_id from 4b)

For each ad:

curl -s -w "\nHTTP_STATUS:%{http_code}" -X POST -H "Authorization: Bearer $TOKEN" \
  -H "$SDK_HEADER" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "...",
    "ad_set_id": "<from step 4b>",
    "tagline": "...",
    "advertiser_name": "...",
    "assets": {
      "asset_id": "...",
      "logo_asset_id": "...",
      "companion_asset_id": "..."
    },
    "call_to_action": {
      "key": "SHOP_NOW",
      "clickthrough_url": "https://..."
    },
    "delivery": "ON"
  }' \
  "$BASE_URL/ad_accounts/$AD_ACCOUNT_ID/ads"

Step 5: Summary

After all entities are created, display a final summary table:

Entity	ID	Name	Status
Campaign	uuid	...	...
Ad Set 1	uuid	...	...
↳ Ad 1	uuid	...	...
Ad Set 2	uuid	...	...
↳ Ad 2	uuid	...	...

Execution Behavior

• If auto_execute is true, execute each API call directly after presenting the plan.
• If auto_execute is false, present the full plan and ask for confirmation before executing. Then execute all calls in sequence without additional confirmation per call.
• Always check the HTTP_STATUS: line from curl output to determine success or failure before interpreting the response body.
• On error, show the error message and stop. Do not continue creating dependent entities if a parent fails. Never automatically retry a POST — if a campaign/ad set/ad creation fails with a 5xx, check if the entity was actually created (e.g., list campaigns) before suggesting a retry.

Critical Schema Notes

These are non-obvious API requirements that MUST be followed:

1. bid_strategy is a plain STRING enum, NOT an object. Valid: MAX_BID, COST_PER_RESULT, AUTOBID, UNSET
2. geo_targets is a flat object {"country_code": "US"}, NOT an array of objects
3. platforms valid values are ANDROID, DESKTOP, IOS — NOT "MOBILE" or "CONNECTED_DEVICE"
4. category is required on ad sets — must be a valid ADV_X_Y code from GET /ad_categories
5. end_time is required when budget type is LIFETIME
6. companion_asset_id is required when creating ads for AUDIO ad sets
7. call_to_action uses field name key (not type) and clickthrough_url (not url)
8. Budget amounts must be in micro-units (multiply dollar amount by 1,000,000)
9. Min audience thresholds apply — VIDEO format may require broader targeting than AUDIO. If you get a "Min audience threshold was not met" error, suggest expanding the age range or switching format.