---
title: "estimate_target_group. Metadata MCP tool reference"
url: https://metadata.io/developers/tools/estimate_target_group
description: "Estimate audience size for target group criteria before creating. Read tool on the Metadata MCP server, with its full JSON Schema and a real recorded response."
source: metadata.io
---

# estimate_target_group

Estimate audience size for target group criteria before creating.

Read [audiences](https://metadata.io/developers/tools/#cat-audiences)

## What it does

## Arguments

| Argument | Type |   | Notes |
|---|---|---|---|
| `channel` | string | required | Channel to estimate for. LINKEDIN (default) takes criteria ids from search_target_group_criteria; REDDIT takes them from search_reddit_criteria and is estimated the same way (PRD-31759). Omit for LinkedIn.one of: `LINKEDIN`, `REDDIT` |
| `targeting` | object |   | Complete targeting configuration with include/exclude rules. Structure: { "include": [ { "criteria": [{"type": str, "data": object}], "audiences": [] } ], "exclude": {"criteria": [], "audiences": []} } All criteria IDs/references must come from search_target_group_criteria tool. |

## Request

**Request template, not a complete runnable example.** Replace placeholders, empty objects, arrays, and zero values with valid account-specific inputs. Read required fields and nested constraints in the full schema. Confirm the account, connected channels, and referenced assets before calling a write tool.

## Response

Recorded with these arguments. Enum values are the first the tool's own schema declares; ids were fetched live from a `list_` call immediately before.

Real, from the production server, in **221 ms**. Values that identify a customer or disclose money are replaced with typed placeholders; keys, types and nesting are exactly as returned.

## Related

Other audiences tools:

- [archive_audience](https://metadata.io/developers/tools/archive_audience) Destructive
- [create_audience_from_segment](https://metadata.io/developers/tools/create_audience_from_segment) Writes
- [create_bombora_audience](https://metadata.io/developers/tools/create_bombora_audience) Writes
- [create_csv_upload_linkedin_native_audience](https://metadata.io/developers/tools/create_csv_upload_linkedin_native_audience) Writes
- [create_facebook_native_criteria_audience](https://metadata.io/developers/tools/create_facebook_native_criteria_audience) Writes
- [create_firmographic_audience](https://metadata.io/developers/tools/create_firmographic_audience) Writes
- [create_g2_intent_dynamic_audience](https://metadata.io/developers/tools/create_g2_intent_dynamic_audience) Writes
- [create_g2_intent_linkedin_native_dynamic_audience](https://metadata.io/developers/tools/create_g2_intent_linkedin_native_dynamic_audience) Writes

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