---
title: "Get message claims."
method: GET
path: "/api/v1/projects/{projectId}/conversations/{sessionId}/messages/{promptId}/claims"
tags: ["Message"]
---

# Get message claims.

`GET /api/v1/projects/{projectId}/conversations/{sessionId}/messages/{promptId}/claims`

## Request

- Base URL: `https://app.customgpt.ai`
- URL: `https://app.customgpt.ai/api/v1/projects/{projectId}/conversations/{sessionId}/messages/{promptId}/claims`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/poll-the-people/apis/customgpt-ai/docs/api/v1/projects/:projectId/conversations/:sessionId/messages/:promptId/claims/get.ts> (a function with typed inputs; its response is checked against the schema)

Returns the factual claims extracted from an agent's response. Each claim is a discrete statement that can be independently verified against the source documents. Use this for fact-checking or building trust indicators.

## Path parameters

- `projectId` integer, required
- `sessionId` string, required
- `promptId` integer, required

## Response `200`

Retrieve explainability claims for a message

- object
  - `status` 'error' | 'success': The status of the response
  - `data` ExplainabilityClaims: Explainability claims generated for a given message
    - `extracted_claims` object[]: List of extracted claims with the supporting evidence and explanations
      - `id` string: Unique claim identifier
      - `text` string: The extracted claim text
      - `status` 'VERIFIED' | 'UNVERIFIED': Verification status of the claim
      - `sources` object[]: List of sources supporting the claim
        - `source` string: Source URL
        - `source_sentence` string: Relevant sentence from the source
      - `source_sentence` string: The original sentence from which the claim was extracted
      - `source_explanation` string: Detailed explanation of how the evidence supports or contradicts the claim
    - `evaluation_duration_ms` number, nullable: Time taken for the claim extraction and evaluation (in milliseconds)

## Other responses

- `400`: Bad Argument
- `401`: API Token is either missing or invalid
- `404`: Conversation message not found
- `500`: Internal Server Error

## Changes

- **2026-11-03** `77aab4354382`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/poll-the-people/apis/customgpt-ai/changes/api/v1/projects/:projectId/conversations/:sessionId/messages/:promptId/claims/get.md)

---

[API](https://skmtc.dev/poll-the-people/apis/customgpt-ai.md) - [All operations](https://skmtc.dev/poll-the-people/apis/customgpt-ai/llms.txt) - [OpenAPI document](https://skmtc.dev/poll-the-people/apis/customgpt-ai/revisions/77aab4354382?raw)