Is Marvin safe to use?

Marvin has an HVTrust score of 62.5/100 (Grade C), ranked #287 of 1308 tracked AI agent projects. This score reflects verifiable supply-chain integrity, transparency, maintenance, and adoption signals.

What is the trust score for Marvin?

Marvin scores 62.5/100 on HVTracker's evidence-weighted HVTrust scale. It has 6.2k GitHub stars and is categorized under Agent Frameworks.

Marvin

PrefectHQ/marvin

an ambient intelligence library

Agent Frameworks Python Grade C Listed Apache-2.0

62.5/100

Rank #287 of 1308

Compare Marvin

How does it stack up against its Agent Frameworks neighbours?

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Promising trust profile, but some evidence still deserves review.

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Listing state

Listed

Evidence coverage

Grade A · 4/5 signals

Last push

2026-08-21 · 4d ago

Recent change

Rank +3

Is Marvin safe? Marvin scores 62.5/100 (Grade C), ranked #287 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 5.7/10; recent commits are unsigned; last pushed 2026-08-21. Every point is earned from checkable signals — never paid placement. How scoring works →

Ranked neighbours in Agent Frameworks

#38 AG2 — 62.9 (C) → #39 AutoGPT — 62.7 (C) → #41 LightAgent — 61.9 (C) → #42 fast-agent — 61.5 (C) →

Quick Trust Read

What Would Improve It

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

Recent Changes

2026-08-24

Rank Moved

Rank dropped 17 spots (#267 → #284)

2026-08-22

Rank Moved

Rank rose 14 spots (#278 → #264)

2026-08-21

Rank Moved

Rank rose 13 spots (#291 → #278)

Maintainer Checklist

Raise Scorecard signals Current OSSF Scorecard is 5.7/10. 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.

Increase signed commits Raise the share of verified-signed commits to make maintainer identity and release history easier to trust.

Compare with another agent Get email alerts for Marvin View Agent Frameworks Report missing data

71.8

Activity sub-score · out of 100

#40

In Agent Frameworks

How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption. Grade C 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 2026-08-25

Activity & Reach

Stars

6.2k

Forks

408

Last Push

2026-08-21

4 days ago

Commits (4 wk)

Downloads (7d)

34,051

pypi

HN mentions (30d)

Open Issues

Rank Change

▼3

was #284

Analysis

HVTrust Dimensions vs Agent Frameworks

62.5 / 100 · 100.0% confidence

Marvin Agent Frameworks average (119 agents)

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

7.1 / 25

1.0 below avg 8.1

Identity / Provenance60% listing status · 40% build provenance

10.8 / 18

0.8 below avg 11.6

Transparency50% declared license · 50% OSSF Scorecard

13.3 / 17

1.8 above avg 11.5

Maintenance60% last-push freshness · 40% commit activity

15.7 / 20

1.5 above avg 14.2

AdoptionLog-scaled stars · package downloads

15.1 / 20

3.8 above avg 11.3

Activity Inputs

71.8 / 100

StarsRepository reach

22.8 / 30

FreshnessLast push recency

24.4 / 25

ActivityRecent commits

12.5 / 25

CommunityFork signal

12.1 / 20

Supply Chain Trust

Package Provenance

None

No package attestations found

OSSF Scorecard

5.7 / 10

OpenSSF Scorecard · scanned Aug 25, 2026

Signed Commits

—

Unable to query

Binary-Artifacts 10

Branch-Protection 5

CI-Tests 10

CII-Best-Practices 0

Code-Review 0

Contributors 10

Dangerous-Workflow 10

Dependency-Update-Tool 10

Fuzzing 0

License 10

Maintained 10

Packaging 10

Pinned-Dependencies 0

SAST 0

Security-Policy 0

Signed-Releases -1

Token-Permissions 9

Vulnerabilities 0

Is Marvin safe?

Marvin has a mixed signal profile. Some trust indicators are present, others are missing. Whether it is safe for your use case depends on which gaps matter to you — review the breakdown below before adopting in production.

Does Marvin publish package provenance?

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

Does Marvin have an OpenSSF Scorecard?

Marvin has an OpenSSF Scorecard score of 5.7/10. 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 Marvin actively maintained?

Actively maintained. The repository was pushed to within the last 4 day(s).

What license does Marvin use?

Marvin ships under Apache-2.0. A declared, OSI-approved license is one of the transparency signals HVTrust scores.

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.

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

Marvin appears to expose MCP server capabilities.

Detailed evidence is not shown in the public view.

External Service Dependencies

high confidence

2 detected

Public provider/service dependencies detected.

Credential signal: API keys or service config markers documented.

Tool / Plugin Surface

None detected

No clear plugin system or broad tool 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

Maintain Marvin?

For maintainers

HVTrust scores Marvin 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

2026-08-24

Rank Moved

Rank dropped 17 spots (#267 → #284)

2026-08-22

Rank Moved

Rank rose 14 spots (#278 → #264)

2026-08-21

Rank Moved

Rank rose 13 spots (#291 → #278)

2026-08-19

Rank Moved

Rank dropped 22 spots (#267 → #289)

2026-08-17

Rank Moved

Rank rose 34 spots (#299 → #265)

2026-08-16

Rank Moved

Rank rose 38 spots (#337 → #299)

2026-08-16

Activity Score Changed

Activity score up 7pts (67 → 74)

2026-08-13

Rank Moved

Rank dropped 17 spots (#318 → #335)

2026-08-10

Rank Moved

Rank dropped 19 spots (#306 → #325)

2026-08-08

Rank Moved

Rank dropped 72 spots (#230 → #302)

2026-07-31

Rank Moved

Rank rose 13 spots (#242 → #229)

2026-07-28

Rank Moved

Rank dropped 12 spots (#227 → #239)

2026-07-20

Rank Moved

Rank rose 58 spots (#285 → #227)

2026-07-20

HVTrust Changed

HVTrust up 6.4pts (51.8 → 58.2)

2026-07-20

Activity Score Changed

Activity score up 15pts (50 → 66)

2026-07-15

Rank Moved

Rank dropped 18 spots (#267 → #285)

2026-07-14

Rank Moved

Rank dropped 15 spots (#252 → #267)

2026-07-13

Rank Moved

Rank dropped 29 spots (#223 → #252)

2026-06-24

Rank Moved

Rank dropped 25 spots (#185 → #210)

2026-06-23

Rank Moved

Rank dropped 11 spots (#174 → #185)

2026-06-20

Rank Moved

Rank dropped 12 spots (#146 → #158)

2026-06-20

HVTrust Changed

HVTrust down 4.7pts (59.6 → 54.9)

2026-06-18

Scorecard Added

OSSF Scorecard: 5.3/10

2026-06-18

Grade Changed

Trust grade D → C

2026-06-18

Rank Moved

Rank rose 59 spots (#200 → #141)

2026-06-18

HVTrust Changed

HVTrust up 23.2pts (36.3 → 59.5)

2026-06-16

Scorecard Removed

OSSF Scorecard no longer detected

2026-06-16

Grade Changed

Trust grade C → D

2026-06-16

Rank Moved

Rank dropped 76 spots (#122 → #198)

2026-06-16

HVTrust Changed

HVTrust down 25.7pts (62.1 → 36.4)

2026-06-16

Activity Score Changed

Activity score down 10pts (65 → 55)

2026-06-15

Scorecard Added

OSSF Scorecard: 5.3/10

2026-06-15

Grade Changed

Trust grade D → C

2026-06-15

Rank Moved

Rank rose 76 spots (#198 → #122)

2026-06-15

HVTrust Changed

HVTrust up 25.8pts (36.3 → 62.1)

2026-06-15

Activity Score Changed

Activity score up 10pts (55 → 65)

2026-06-13

Scorecard Removed

OSSF Scorecard no longer detected

2026-06-13

Grade Changed

Trust grade C → D

2026-06-13

Rank Moved

Rank dropped 77 spots (#122 → #199)

2026-06-13

HVTrust Changed

HVTrust down 26.0pts (62.3 → 36.3)

2026-06-13

Activity Score Changed

Activity score down 10pts (65 → 55)

2026-06-11

Scorecard Added

OSSF Scorecard: 5.3/10

2026-06-11

Grade Changed

Trust grade D → C

2026-06-11

Rank Moved

Rank rose 77 spots (#199 → #122)

2026-06-11

HVTrust Changed

HVTrust up 26.0pts (36.4 → 62.4)

2026-06-11

Activity Score Changed

Activity score up 9pts (56 → 65)

2026-06-10

Scorecard Removed

OSSF Scorecard no longer detected

2026-06-10

Grade Changed

Trust grade C → D

2026-06-10

Rank Moved

Rank dropped 86 spots (#113 → #199)

2026-06-10

HVTrust Changed

HVTrust down 26.1pts (62.5 → 36.4)

2026-06-10

Activity Score Changed

Activity score down 9pts (65 → 56)

2026-06-08

Rank Moved

Rank rose 12 spots (#127 → #115)

2026-06-08

Activity Score Changed

Activity score up 9pts (56 → 65)

2026-06-07

Rank Moved

Rank dropped 13 spots (#114 → #127)

2026-06-07

Activity Score Changed

Activity score down 9pts (65 → 56)

2026-05-29

HVTrust Changed

HVTrust up 10.0pts (52.3 → 62.3)

2026-05-28

Activity Score Changed

Activity score up 10pts (58 → 67)

GitHub → PyPI: marvin

Embed Badge Badge guide for maintainers →

For maintainers

Markdown:
            [![HVTrust](https://hvtracker.net/badge/marvin.svg)](https://hvtracker.net/agents/marvin)
            
HTML:
            <a href="https://hvtracker.net/agents/marvin"><img src="https://hvtracker.net/badge/marvin.svg" alt="HVTrust"></a>

Other agents in Agent Frameworks

Data sources
GitHub REST API (repo, commits, stars, forks, license) · 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