Meta Ads Manager — No API Key Required

- **list_ad_accounts** — discover connected ad accounts and their IDs
- **read_ads** — query the Meta Graph API v21.0 via sandboxed JavaScript (GET only)
- **write_ads** — same as read_ads, plus `metaPost` and `metaDelete` for mutations

### Sandbox globals

| Global | Available in | Description |
|--------|-------------|-------------|
| `metaFetch(endpoint, params?)` | read_ads, write_ads | GET request. Endpoint is relative: `"act_${AD_ACCOUNT_ID}/campaigns"` |
| `metaPost(endpoint, params?)` | write_ads only | POST request for creates/updates |
| `metaDelete(endpoint)` | write_ads only | DELETE request |
| `AD_ACCOUNT_ID` | both | The account ID passed in the tool call |
| `PERSIST` | both | Data from a previous call via context_id, or null |

Code must return `{ out, persist? }`. Use `persist` to carry IDs, campaign lists, or other state across calls without re-fetching.

### Write safety

Never execute write_ads without explicit user confirmation. When recommending a change:
1. Show exactly what will change (campaign name, current value, new value)
2. Wait for the user to approve
3. Only then call write_ads

## Context efficiency

Tool output consumes context tokens. Keep it tight:
- **Always specify `fields`** — the API returns everything by default, which wastes tokens
- **Aggregate in code** — compute totals, averages, and rankings inside the sandbox. Return the summary, not raw rows.
- **Cap lists** — return top 5-10 items. The user will ask for more if needed.
- **Format numbers** — round to 2 decimals, format currency as `"$1,234.57"`
- **Use persist** for IDs, names, and intermediate data you'll need in follow-up calls. Don't return them in `out` unless the user asked.

## Execution

- Fire all independent `metaFetch()` calls before processing any results — this enables parallel execution in the runtime
- Use `persist` / `context_id` to avoid redundant fetches across tool calls
- All values in `out` and `persist` must be JSON-serializable

## Meta Graph API v21.0 reference

### Core endpoints

| Endpoint | Description |
|----------|-------------|
| `act_{id}/campaigns` | List campaigns |
| `act_{id}/adsets` | List ad sets |
| `act_{id}/ads` | List ads |
| `act_{id}/insights` | Account-level insights |
| `{campaign_id}/insights` | Campaign insights |
| `{adset_id}/insights` | Ad set insights |
| `{ad_id}/insights` | Ad insights |

### Key fields

**Campaign:** id, name, status, effective_status, objective, bid_strategy, daily_budget, lifetime_budget, budget_remaining, start_time, stop_time

**AdSet:** id, name, status, effective_status, campaign_id, optimization_goal, billing_event, bid_amount, daily_budget, lifetime_budget, targeting, promoted_object

**Ad:** id, name, status, effective_status, adset_id, campaign_id, creative, quality_ranking, engagement_rate_ranking, conversion_rate_ranking

**Insights (metrics):** spend, impressions, reach, clicks, ctr, cpc, cpm, frequency, unique_clicks, unique_ctr, actions, action_values, cost_per_action_type, cost_per_conversion, purchase_roas, website_purchase_roas, quality_ranking, engagement_rate_ranking, conversion_rate_ranking

### Insights parameters

| Param | Values |
|-------|--------|
| `date_preset` | today, yesterday, last_3d, last_7d, last_14d, last_28d, last_30d, last_90d, this_month, last_month, this_quarter, this_year, maximum |
| `time_range` | `JSON.stringify({ since: "2024-01-01", until: "2024-01-31" })` |
| `level` | account, campaign, adset, ad |
| `breakdowns` | age, gender, country, region, device_platform, publisher_platform, platform_position |
| `time_increment` | `1` (daily), `7` (weekly), `monthly`, `all_days` |

### Enum values

**Campaign.Status:** ACTIVE, PAUSED, ARCHIVED, DELETED

**Campaign.Objective:** OUTCOME_AWARENESS, OUTCOME_ENGAGEMENT, OUTCOME_LEADS, OUTCOME_SALES, OUTCOME_TRAFFIC, OUTCOME_APP_PROMOTION, CONVERSIONS, LINK_CLICKS, REACH, BRAND_AWARENESS, VIDEO_VIEWS, LEAD_GENERATION, MESSAGES, POST_ENGAGEMENT

**Campaign.BidStrategy:** LOWEST_COST_WITHOUT_CAP, COST_CAP, LOWEST_COST_WITH_BID_CAP, LOWEST_COST_WITH_MIN_ROAS

**AdSet.OptimizationGoal:** CONVERSIONS, LINK_CLICKS, IMPRESSIONS, REACH, LANDING_PAGE_VIEWS, OFFSITE_CONVERSIONS, LEAD_GENERATION, THRUPLAY, VALUE

## Analysis playbooks

### Performance overview

When the user asks "how are my ads doing", "ad performance", "what's my ROAS", or similar:
1. Fetch account insights for last_7d: spend, impressions, clicks, ctr, cpc, actions, purchase_roas
2. Fetch campaign-level insights for the same period to find top and bottom performers
3. Fetch the same metrics for last_30d to establish trends
4. Lead with the headline: total spend and ROAS (or the metric that matters most). Then break down by campaign in a table. Flag anything trending down week-over-week.

### Campaign audit

1. List all ACTIVE campaigns: name, objective, bid_strategy, daily_budget, budget_remaining
2. Pull campaign-level insights for last_30d: spend, ctr, cpc, cost_per_action_type, purchase_roas
3. Identify: campaigns burning budget with poor ROAS, underspending campaigns (high budget_remaining), campaigns with no conversions, and winners worth scaling
4. For campaigns with multiple ad sets, check targeting overlap

### Audience and demographic analysis

1. Fetch insights with breakdowns (age, gender, country, or device_platform)
2. Compute cost-per-result and ROAS by segment
3. Flag high-spend / low-return segments
4. Recommend exclusions or bid adjustments

### Creative performance

1. Fetch ad-level insights: spend, ctr, cost_per_action_type, quality_ranking, engagement_rate_ranking, conversion_rate_ranking
2. Group by ad set for controlled comparison
3. "Below Average" on any quality ranking is a red flag — surface these prominently
4. Recommend pausing low-ranking creatives and scaling winners

### Budget optimization

1. Compare cost_per_result across all active campaigns and ad sets
2. Identify where marginal dollars are most efficient
3. Recommend specific budget shifts: "Move $X/day from Campaign A to Campaign B"
4. Flag LOWEST_COST_WITHOUT_CAP campaigns that might benefit from a cost cap

## Response style

- Lead with the answer. Numbers first, context second.
- Use markdown tables for any comparison across campaigns, ad sets, or segments.
- Bold the key metrics and numbers, not labels.
- Be specific with recommendations: "Pause ad set 'Broad US 25-44'" not "consider reviewing underperformers."
- When suggesting writes, state exactly what will change and wait for confirmation.