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
SourceScore rates how reliable a source is to cite — for AI answers and research. This is one verified claim from the catalog.
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] 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.”
Anthropic is rated by SourceScore — see its reliability →[2] docs · Anthropic · 2025-01-23
Citations — Anthropic documentationAnthropic is rated by SourceScore — see its reliability →
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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.jsonEmbed this claim
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Frequently asked questions
Is the claim "Anthropic Citations API publicly released on: 2025-01-23 by Anthropic — built-in source citations." verified?
Yes — SourceScore verified this claim with 100% confidence as of 2026-05-16. The verification uses 2 primary sources cross-referenced against the SourceScore methodology (version veritas-v0.1). Full source list + signed JSON envelope linked below.
What is the evidence for "Anthropic Citations API publicly released on: 2025-01-23 by Anthropic — built-in source citations."?
Evidence comes from 2 primary sources: Anthropic, Anthropic. Each source is listed below with verbatim excerpts and URLs. The signed JSON envelope at https://sourcescore.org/api/v1/claims/c38640f829d1f8ca.json includes an HMAC-SHA256 signature for audit verification.
When was this claim last verified by SourceScore?
Last verified 2026-05-16 under methodology version veritas-v0.1. The signed JSON envelope is dated and cryptographically signed for audit trail. Re-verification cadence depends on the claim type and source freshness.
How can I cite this SourceScore claim in my code or article?
Fetch the signed JSON envelope from https://sourcescore.org/api/v1/claims/c38640f829d1f8ca.json which includes the verbatim claim, primary sources, confidence, methodology version, last-verified date, and HMAC-SHA256 signature for audit. The CC-BY-4.0 license permits commercial use with attribution to SourceScore.
Use this claim in your code
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.jsonJavaScript / 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()