Auto-select products

Deprecated. This page documents the v2 buyer API, which is closed to new API clients and switches off on 1 December 2026. Use V3 instead: see Move a v2 buyer REST integration to V3. The conversion endpoint, Log event, stays open.

POST /api/v2/buyer/campaigns/:id/auto-select-products For DRAFT campaigns with an attached discovery session, this lets Apostra pick a balanced product set. Iterate with ADCP-style refinement to nudge the selection toward your plan.

Request

curl -X POST https://api.apostra.com/api/v2/buyer/campaigns/cmp_987654321/auto-select-products \
  -H "Authorization: Bearer $SCOPE3_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "maxProducts": 8, "minBudgetPerProduct": 2500 }'

{
  "maxProducts": 8,
  "minBudgetPerProduct": 2500,
  "refine": [
    { "scope": "request", "ask": "more video, less display" },
    { "scope": "product", "id": "prod_xyz789", "action": "moreLikeThis" },
    { "scope": "product", "id": "prod_xyz790", "action": "omit" }
  ]
}

Parameters

Field	Type	Required	Notes
`id`	string	Yes	Campaign ID (path parameter). Must be `DRAFT` with a discovery session.
`maxProducts`	number	No	Maximum number of products to select.
`minBudgetPerProduct`	number	No	Minimum budget each selected product must support.
`refine`	array	No	ADCP-style refinement instructions applied to the next selection pass.
`refine[].scope`	`request` \| `product`	Yes (per entry)	`request` refines the whole selection; `product` targets a single product.
`refine[].ask`	string	For `request` scope	Free-text instruction, e.g. `"more video, less display"`.
`refine[].id`	string	For `product` scope	Product ID to act on.
`refine[].action`	`include` \| `omit` \| `moreLikeThis`	For `product` scope	`include` keeps this product; `omit` drops it; `moreLikeThis` finds similar ones.

Response

{
  "campaignId": "cmp_987654321",
  "discoveryId": "disc_abc123",
  "selectedProducts": [
    {
      "productId": "prod_xyz789",
      "name": "Example Media - CTV Premium",
      "salesAgentId": "agent_example",
      "groupId": "grp_1",
      "groupName": "CTV",
      "cpm": 18.5,
      "budget": 25000,
      "goalCoverage": {
        "coversPrimaryGoal": true,
        "uncovered": [],
        "expected": {
          "basis": "completion_rate",
          "low": 0.62,
          "mid": 0.66,
          "high": 0.71,
          "required": 0.5,
          "verdict": "likely"
        }
      }
    }
  ],
  "budgetContext": {
    "campaignBudget": 100000,
    "totalAllocated": 25000,
    "remainingBudget": 75000,
    "currency": "USD"
  },
  "productCount": 1
}

When the campaign has optimization goals, auto-select prefers products that can optimize to the primary goal: every product that can ranks ahead of every product that cannot. Among the products that can, those whose forecast makes the primary goal’s target likely come first, then possible, then products with no expectation, then unlikely. The usual order (historical score, or lowest CPM) decides within each group. The preference applies before maxProducts or minBudgetPerProduct trims the list. A product that cannot optimize to the goal is still selected when the budget reaches past every product that can, and products you include are kept whatever they can optimize. goalCoverage on each selected product says what it can optimize, read from the product’s AdCP optimization declaration:

Field	Meaning
`selectedProducts[].goalCoverage.coversPrimaryGoal`	Whether the product can optimize to the primary goal (priority 1).
`selectedProducts[].goalCoverage.uncovered[]`	Each goal the product cannot optimize to: the `goal`, a `code` (for example `metric_not_declared` or `goal_kind_not_declared`) and a readable `reason`. Empty when it can optimize to every goal.
`selectedProducts[].goalCoverage.expected`	How the product is expected to perform against a `views`, `viewable_rate` or `completed_views` primary goal with a target, from the seller’s forecast. Absent when there is nothing to judge.
`selectedProducts[].goalCoverage.expected.basis`	What the rates measure: `viewable_rate` (viewable ÷ measurable), `viewable_per_impression` (viewable ÷ all impressions, for a cost per viewable impression) or `completion_rate` (completed views ÷ impressions).
`selectedProducts[].goalCoverage.expected.low` / `mid` / `high`	The expected rate, 0 to 1: conservative, expected and optimistic.
`selectedProducts[].goalCoverage.expected.required`	The rate the goal needs: a `threshold_rate` target, or CPM ÷ (1000 × target) for a `cost_per` target at the product’s CPM.
`selectedProducts[].goalCoverage.expected.verdict`	`likely` (the low end meets `required`), `possible` (only the expected or high end does) or `unlikely` (the high end misses).

goalCoverage is absent when the campaign has no goals or the platform holds no copy of the product. A product that declares no optimization capability covers no goal. See Goal-seeking campaigns for how the expectation is worked out. Read the confirmed selection with Get campaign products.

Errors

Code	When
`VALIDATION_ERROR`	Campaign is not `DRAFT`, has no discovery session, or `refine` entries are malformed.
`NOT_FOUND`	Campaign ID does not exist for the authenticated account.

See Errors for the full error shape and recovery semantics.

Discovery

Build the discovery session that feeds selection

Get campaign products

Read the selected products

Execute campaign

Launch the campaign into media buys

Campaign overview

The campaign object and lifecycle

Start building

Core Concepts

Buyer operations

Seller operations

Cross-Cutting Reference

Buyer API reference

Seller API reference

Release Notes

Auto-select products

Request

Parameters

Response

Errors

Discovery

Get campaign products

Execute campaign

Campaign overview

​Request

​Parameters

​Response

​Errors

​Related

Discovery

Get campaign products

Execute campaign

Campaign overview

Request

Parameters

Response

Errors

Related