---
title: "Find similar legal sources"
method: POST
path: "/legal/v1/similar"
tags: ["Legal"]
---

# Find similar legal sources

`POST /legal/v1/similar`

Find cases and documents similar to a given legal source. Useful for finding citing cases, related precedents, or similar statutes.

## Request body

- object
  - `url` string, uri, required — URL of a legal document to find similar sources for
  - `jurisdiction` string — Optional jurisdiction ID to filter results
  - `numResults` integer — Number of results 1-25 (default: 10)
  - `startPublishedDate` string, date — Optional ISO date to find only newer documents (e.g., "2020-01-01")

## Response `200`

Similar sources found successfully

- object
  - `sourceUrl` string — Original source URL
  - `jurisdiction` string — Jurisdiction filter applied
  - `found` integer — Number of similar sources found
  - `similarSources` object[]
    - `url` string — URL of the similar source
    - `title` string — Title of the document
    - `snippet` string — Text excerpt from the document
    - `publishedDate` string, nullable — Publication date
    - `source` string — Domain of the source
  - `hint` string — Usage guidance

## Other responses

- `400` — Bad request - invalid URL or parameters
- `401` — Unauthorized - invalid API key
- `403` — Forbidden - insufficient permissions
- `503` — Service unavailable - similarity service unreachable

---

[API](https://skmtc.net/casemark/apis/case-dev-api.md) · [All operations](https://skmtc.net/casemark/apis/case-dev-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/casemark/case-dev-api/versions/5b7e64e6d6f9/schema)