---
title: "Get Authority Impact"
method: GET
path: "/authorities/{authority_id}/impact"
tags: ["authorities"]
---

# Get Authority Impact

`GET /authorities/{authority_id}/impact`

## Request

- Base URL: `https://api.casenode.ai`
- URL: `https://api.casenode.ai/authorities/{authority_id}/impact`
- Auth: none declared

What later courts have cited this judgment FOR, if we have derived it.

A different question from `/summary`, and one the judgment cannot answer.
A summary is read out of the case; this is read out of the 2.39M citation
edges around it, so the two have different lifetimes and live in different
tables. Nothing here is a claim about whether the case is still good law:
treatment is a separate axis and `relationship_type` is 2,389,410 bare
`cites`, so we do not hold it.

**Absent is 200 with an empty object, not 404**, for exactly the reason the
summary endpoint gives: having no record is the ordinary answer for almost
every case, and 404 would make the normal path an error that every case page
load would log. A 404 here means the AUTHORITY does not exist.

The method gate mirrors `/summary`'s and is here rather than in each caller
because this endpoint is what the case viewer reads. It is deliberately
strict about a value that only has one member today: a second writer would
have to be added on purpose, and adding it is the moment to decide whether
it is fit to serve.

⚠ Unlike `/summary`, absence here must NEVER withhold a page. `_HAS_SUMMARY`
in indexable.py exists because a case page with template prose on it is
worse than one without; a case page with no impact section is simply a case
page, so there is no equivalent flag and there should not be one.

## Path parameters

- `authority_id` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/casenode/apis/casenode-api.md) · [All operations](https://skmtc.dev/casenode/apis/casenode-api/llms.txt) · [OpenAPI document](https://skmtc.dev/casenode/apis/casenode-api/revisions/5b2883d19661?raw)