---
title: "Vector similarity search"
method: POST
path: "/api/rag/{project_id}/search"
tags: ["RAG"]
---

# Vector similarity search

`POST /api/rag/{project_id}/search`

## Request

- Base URL: `https://core.blink.new`
- URL: `https://core.blink.new/api/rag/{project_id}/search`
- Auth: HTTP bearer

Search for similar chunks using vector embeddings

## Path parameters

- `project_id` string, required

## Request body

- object
  - `collection_id` string
  - `collection_name` string
  - `query` string, required
  - `max_results` integer
  - `score_threshold` number

## Response `200`

Search results with similarity scores

## Other responses

- `401`: Authentication required or invalid API key

---

[API](https://skmtc.dev/blink/apis/blink-apis.md) - [All operations](https://skmtc.dev/blink/apis/blink-apis/llms.txt) - [OpenAPI document](https://skmtc.dev/blink/apis/blink-apis/revisions/4c59c706078e?raw)