Is Langfuse safe to use?

Langfuse has an HVTrust score of 78.2/100 (Grade B), ranked #77 of 1308 tracked AI agent projects. This score reflects verifiable supply-chain integrity, transparency, maintenance, and adoption signals.

What is the trust score for Langfuse?

Langfuse scores 78.2/100 on HVTracker's evidence-weighted HVTrust scale. It has 33.4k GitHub stars and is categorized under Observability & Evaluation.

Langfuse

langfuse/langfuse

🪢 Open source AI engineering platform: LLM evals, observability, metrics, prompt management, playground, datasets. Integ

Observability & Evaluation TypeScript Grade B Listed NOASSERTION

78.2/100

Rank #77 of 1308

Compare Langfuse

How does it stack up against its Observability & Evaluation neighbours?

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Strong public trust posture, backed by multiple independent signals.

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Listing state

Listed

Evidence coverage

Grade A · 4/5 signals

Last push

2026-08-19 · 0d ago

Recent change

No recent signal change

Is Langfuse safe? Langfuse scores 78.2/100 (Grade B), ranked #77 of 1308 tracked open-source AI agent projects, on evidence coverage A (4 of 5 independent signal types). The public evidence: no package-provenance attestation found; OSSF Scorecard rates its supply-chain practices 6.5/10; 91% of recent commits are signed; last pushed 2026-08-19. Every point is earned from checkable signals — never paid placement. How scoring works →

Ranked neighbours in Observability & Evaluation

#3 Weights & Biases Weave — 86.5 (A) → #4 OpenLLMetry — 84.9 (A) → #6 Arize Phoenix — 76.4 (B) → #7 Evidently — 76.2 (B) →

Quick Trust Read

What Would Improve It

Publish package provenance or release attestations for stronger supply-chain evidence.

Recent Changes

2026-08-07

Drift Warning Cleared

Provenance drift warning cleared (now: unknown)

Maintainer Checklist

Raise Scorecard signals Current OSSF Scorecard is 6.5/10. Tighten the weakest checks to improve public safety evidence.

Publish provenance Add package provenance or release attestations so users can verify where shipped artifacts came from.

Compare with MLflow Get email alerts for Langfuse View Observability & Evaluation Report missing data

93.6

Activity sub-score · out of 100

In Observability & Evaluation

How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption. Grade B reflects the trust score band: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Evidence coverage A is separate — it grades how many independent signal types back the score (4 of 5), so a high score on thin evidence stays visible. Full methodology →

Rank Trend

2026-08-11 2026-08-19

Activity & Reach

Stars

33.4k

Forks

3.6k

Last Push

2026-08-19

today

Commits (4 wk)

611

Downloads (7d)

6,935,809

npm+pypi

HN mentions (30d)

Open Issues

300

Rank Change

▼5

was #72

Analysis

HVTrust Dimensions vs Observability & Evaluation

78.2 / 100 · 100.0% confidence

Langfuse Observability & Evaluation average (23 agents)

Safety / Integrity50% OSSF Scorecard · 30% provenance · 20% signed commits

12.7 / 25

1.7 above avg 11.0

Identity / Provenance60% listing status · 40% build provenance

10.8 / 18

2.2 below avg 13.0

Transparency50% declared license · 50% OSSF Scorecard

14.0 / 17

2.1 above avg 11.9

Maintenance60% last-push freshness · 40% commit activity

20.0 / 20

4.9 above avg 15.1

AdoptionLog-scaled stars · package downloads

20.0 / 20

6.1 above avg 13.9

Activity Inputs

93.6 / 100

StarsRepository reach

27.1 / 30

FreshnessLast push recency

25.0 / 25

ActivityRecent commits

25 / 25

CommunityFork signal

16.5 / 20

Supply Chain Trust

Package Provenance

None

No package attestations found

OSSF Scorecard

6.5 / 10

OpenSSF Scorecard · scanned Aug 18, 2026

Signed Commits

91%

of last 100 commits verified

Binary-Artifacts 10

Branch-Protection 3

CI-Tests 10

CII-Best-Practices 0

Code-Review 0

Contributors 10

Dangerous-Workflow 10

Dependency-Update-Tool 10

Fuzzing 0

License 9

Maintained 10

Packaging 10

Pinned-Dependencies 7

SAST 10

Security-Policy 9

Signed-Releases -1

Token-Permissions 5

Vulnerabilities 0

Is Langfuse safe?

Public supply-chain signals for Langfuse are strong: it has multiple independent trust indicators in place. This does not replace your own security review, but Langfuse carries less obvious unverified-evidence risk than projects with thin signals.

Does Langfuse publish package provenance?

No published build provenance is currently detected for Langfuse. This is common for open-source projects but means consumers cannot independently verify that the package on the registry matches the GitHub source.

Does Langfuse have an OpenSSF Scorecard?

Langfuse has an OpenSSF Scorecard score of 6.5/10. The Scorecard checks for branch protection, signed releases, dependency updates, fuzzing, code review, and other supply-chain hygiene items. See the full check breakdown on this page.

Is Langfuse actively maintained?

Actively maintained. The repository was pushed to within the last 1 day(s).

What license does Langfuse use?

Langfuse ships under NOASSERTION. A declared, OSI-approved license is one of the transparency signals HVTrust scores.

Are Langfuse's commits signed?

91% of the last 100 commits to Langfuse are verified-signed (GPG, SSH, S/MIME, or GitHub's signing flow). Signed commits help confirm that code was authored by who the commit claims.

Not a safety endorsement. HVTracker describes what public signals show, not whether a project is safe for your use case. Run your own security review before adopting in production.

Compare Langfuse head-to-head

Langfuse vs MLflow → Langfuse vs Promptfoo → Langfuse vs Weights & Biases Weave →

AI agent surface

MCP, providers, tool surface

Scored in HVTrust

These runtime-trust fields — detected from public repo docs and manifests — contribute a bounded adjustment to this project's HVTrust score alongside supply-chain evidence. The exact values each field can add or subtract are documented in the methodology → Compare this surface across every listed agent in the capability matrix →

MCP Server Support

high confidence

Implemented

Langfuse appears to expose MCP server capabilities.

Detailed evidence is not shown in the public view.

External Service Dependencies

high confidence

1 detected

Public provider/service dependencies detected.

Anthropic

Credential signal: API keys or service config markers documented.

Tool / Plugin Surface

high confidence

Declared

Declared plugin/integration surface detected.

Detailed evidence is not shown in the public view.

Package Provenance Drift

low confidence

Unknown

Package source metadata is missing or inconclusive

Detailed evidence is not shown in the public view.

MCP signal live
External deps live
Tool / plugin surface live
Package provenance drift live

How this surface has changed

Detected changes to Langfuse's runtime surface and supply-chain posture, from daily public-signal snapshots. A change here means our detectors see something different — a genuinely changed capability, or better evidence of an existing one.

2026-08-07

Drift Warning Cleared

Provenance drift warning cleared (now: unknown)

2026-06-05

Drift Warning Raised

Package-provenance drift warning: package metadata no longer clearly points at this repo

Maintain Langfuse?

For maintainers

HVTrust scores Langfuse from public signals only — we never contact maintainers first. If a signal is wrong, stale, or missing (provenance you publish, a Scorecard you run, signed releases), tell us and we'll review it. Corrections are public and tracked on GitHub.

Submit a correction → Add the trust badge

Reputation Timeline

Signal history

2026-08-07

Drift Warning Cleared

Provenance drift warning cleared (now: unknown)

2026-07-13

Rank Moved

Rank dropped 11 spots (#80 → #91)

2026-06-05

Drift Warning Raised

Package-provenance drift warning: package metadata no longer clearly points at this repo

2026-05-29

HVTrust Changed

HVTrust up 10.0pts (64.7 → 74.7)

2026-05-28

Activity Score Changed

Activity score up 25pts (68 → 93)

2026-05-27

Scorecard Added

OSSF Scorecard: 6.8/10

2026-05-27

Grade Changed

Trust grade C → B

2026-05-27

HVTrust Changed

HVTrust up 33.0pts (37.7 → 70.7)

2026-05-25

Newly Listed

First tracked at rank #51

GitHub → PyPI: langfuse npm: langfuse

Embed Badge Badge guide for maintainers →

For maintainers

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Other agents in Observability & Evaluation

Data sources
GitHub REST API (repo, commits, stars, forks, license) · npm Registry (downloads, provenance) · PyPI / pypistats (downloads, provenance) · OpenSSF Scorecard CLI · Algolia HN Search API
Each agent's signals refresh once daily across 6 staggered batches. Methodology v4.3 · Raw JSON