---
title: "Retrieve all accessible concepts"
method: GET
path: "/api/concepts"
tags: ["concepts"]
---

# Retrieve all accessible concepts

`GET /api/concepts`

Retrieve all accessible concepts in the system.

### Concepts Overview:
- Concepts are semantic tags generated automatically by analyzing article text using ML embeddings (`gemini-embedding-2`), rather than explicit user tags.
- Primarily used for advanced semantic categorization, automated feeds, and interest mapping.

## Query parameters

- `page` integer
- `per_page` integer
- `days` integer

## Response `200`

successful

- Concept[]
  - `id` integer, required
  - `name` string, required
  - `slug` string, required
  - `description` string, nullable
  - `parent_id` integer, nullable
  - `score` number, float
  - `similarity_threshold` number, float, nullable
  - `created_at` string, date-time, required
  - `updated_at` string, date-time, required
  - `daily_metrics` ConceptDailyMetric[]
    - `date` string, date, required
    - `articles_count` integer, required
    - `comments_count` integer, required
    - `page_views` integer, required
    - `reactions_count` integer, required
    - `popularity_score` number, float, required
  - `top_articles` object[]
    - `id` integer
    - `title` string
    - `slug` string
    - `score` number, float
    - `published_at` string, date-time

## Other responses

- `401` — unauthorized

---

[API](https://skmtc.net/forem/apis/forem-api-v1.md) · [All operations](https://skmtc.net/forem/apis/forem-api-v1/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/forem/forem-api-v1/versions/bcdd2cdd127c/schema)