Verified claim · AI-ML · 100% confidence
LangFlow publicly released on: 2023-02-04 by Logspace — open-source visual builder for LangChain workflows.
Last verified 2026-05-16 · Methodology veritas-v0.1 · d213c9da3c640697
Structured fields
- Subject
- LangFlow
- Predicate
publicly_released_on- Object
- 2023-02-04 by Logspace — open-source visual builder for LangChain workflows
- Confidence
- 100%
- Tags
- langflow · langchain · visual-builder · open-source · released_on · 2023
Sources (2)
[1] github release · Logspace · 2023-02-04
LangFlow — official GitHub repository“LangFlow is a powerful tool for building and deploying AI-powered agents and workflows, providing a visual flow editor for LangChain and other frameworks.”
[2] docs · LangFlow · 2023-02-04
LangFlow — official site
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LangFlow publicly released on: 2023-02-04 by Logspace — open-source visual builder for LangChain workflows. — SourceScore Claim d213c9da3c640697 (verified 2026-05-16). https://sourcescore.org/api/v1/claims/d213c9da3c640697.jsonEmbed this claim
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Frequently asked questions
Is the claim "LangFlow publicly released on: 2023-02-04 by Logspace — open-source visual builder for LangChain workflows." 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 "LangFlow publicly released on: 2023-02-04 by Logspace — open-source visual builder for LangChain workflows."?
Evidence comes from 2 primary sources: Logspace, LangFlow. Each source is listed below with verbatim excerpts and URLs. The signed JSON envelope at https://sourcescore.org/api/v1/claims/d213c9da3c640697.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/d213c9da3c640697.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/d213c9da3c640697.jsonJavaScript / TypeScript
const r = await fetch("https://sourcescore.org/api/v1/claims/d213c9da3c640697.json");
const envelope = await r.json();
console.log(envelope.claim.statement);
// "LangFlow publicly released on: 2023-02-04 by Logspace — open-source visual builder for LangChain workflows."Python
import httpx
r = httpx.get("https://sourcescore.org/api/v1/claims/d213c9da3c640697.json")
envelope = r.json()
print(envelope["claim"]["statement"])
# "LangFlow publicly released on: 2023-02-04 by Logspace — open-source visual builder for LangChain workflows."LangChain (retrieve-then-cite)
from langchain_core.tools import tool
import httpx
@tool
def get_langflow_fact() -> dict:
"""Fetch the verified SourceScore claim for LangFlow."""
r = httpx.get("https://sourcescore.org/api/v1/claims/d213c9da3c640697.json")
return r.json()