SourceScore

Verified claim · AI-ML · 100% confidence

Anthropic Citations API publicly released on: 2025-01-23 by Anthropic — built-in source citations.

Last verified 2026-05-16 · Methodology veritas-v0.1 · c38640f829d1f8ca

Structured fields

Subject
Anthropic Citations API
Predicate
publicly_released_on
Object
2025-01-23 by Anthropic — built-in source citations
Confidence
100%
Tags
citations-api · anthropic · grounding · released_on · 2025

Sources (2)

  1. [1] official blog · Anthropic · 2025-01-23

    Introducing Citations on the Anthropic API
    Today, we're launching Citations, a new API feature that lets Claude ground its answers in source documents. With Citations, Claude can provide detailed references to the exact sentences and passages it uses to generate responses.
  2. [2] docs · Anthropic · 2025-01-23

    Citations — Anthropic documentation

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Anthropic Citations API publicly released on: 2025-01-23 by Anthropic — built-in source citations. — SourceScore Claim c38640f829d1f8ca (verified 2026-05-16). https://sourcescore.org/api/v1/claims/c38640f829d1f8ca.json

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<iframe src="https://sourcescore.org/embed/claim/c38640f829d1f8ca/" width="100%" height="360" frameborder="0" loading="lazy" title="Anthropic Citations API publicly released on: 2025-01-23 by Anthropic — built-in source citations."></iframe>

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Fetch this signed envelope from your application. The response includes the verbatim excerpt, primary source URLs, and an HMAC-SHA256 signature you can verify locally for audit trails.

cURL

curl https://sourcescore.org/api/v1/claims/c38640f829d1f8ca.json

JavaScript / TypeScript

const r = await fetch("https://sourcescore.org/api/v1/claims/c38640f829d1f8ca.json"); const envelope = await r.json(); console.log(envelope.claim.statement); // "Anthropic Citations API publicly released on: 2025-01-23 by Anthropic — built-in source citations."

Python

import httpx r = httpx.get("https://sourcescore.org/api/v1/claims/c38640f829d1f8ca.json") envelope = r.json() print(envelope["claim"]["statement"]) # "Anthropic Citations API publicly released on: 2025-01-23 by Anthropic — built-in source citations."

LangChain (retrieve-then-cite)

from langchain_core.tools import tool import httpx @tool def get_anthropic_citations_api_fact() -> dict: """Fetch the verified SourceScore claim for Anthropic Citations API.""" r = httpx.get("https://sourcescore.org/api/v1/claims/c38640f829d1f8ca.json") return r.json()