ControlFlow

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Agent Frameworks Python Needs review Apache-2.0

Is ControlFlow safe? Thin or incomplete trust evidence. Review carefully before production use.

OSSF Scorecard 4.1 / 10
Provenance Attested
Signed commits 29%
Last push 413d ago
Advisories None known
Compare ControlFlow
Suggest a correction

In detail: ControlFlow scores 44.8/100 (Grade D), ranked #1088 of 1371 tracked open-source AI agent projects, on evidence coverage A (4 of 5 independent signal types). The public evidence: its packages ship with cryptographic provenance; OSSF Scorecard rates its supply-chain practices 4.1/10; 29% of recent commits are signed; no published advisory affects its latest release (controlflow); last pushed 2025-08-22. Every point is earned from checkable signals — never paid placement. How scoring works →

How ControlFlow could raise its score

Each line changes one public signal and recomputes with the live scoring function. The gains don't add up exactly, because the score is capped near the top.

Active listing, but review is needed
  • [4.2.1] no meaningful activity in 12 months (last push 2025-08-22)

Chain of custody

Scanners check what the code says. This traces who ships ControlFlow and whether that has changed: from the source repository, through how changes are reviewed and released, to the package you install. These are the checks for OWASP ASI04 Agentic Supply Chain Vulnerabilities.

  1. Source Partly signed

    github.com/prefect-archive/ControlFlow, Apache-2.0, last pushed 2025-08-22. 29% of the last 100 commits carry a verified signature; the rest can't be tied to a verified identity.

  2. Review and release Mixed

    OpenSSF Scorecard rates the repository's practices 4.1/10 (scanned Sep 27, 2026). The checks that decide who can get a change released:

    • Code Review6
    • Branch Protection1
    • Signed Releasesn/a
    • Dangerous Workflow10
    • Token Permissions8
    • Pinned Dependencies0
    All 18 Scorecard checks
    Binary-Artifacts 10
    Branch-Protection 1
    CI-Tests 1
    CII-Best-Practices 0
    Code-Review 6
    Contributors 10
    Dangerous-Workflow 10
    Dependency-Update-Tool 0
    Fuzzing 0
    License 10
    Maintained 0
    Packaging -1
    Pinned-Dependencies 0
    SAST 7
    Security-Policy 0
    Signed-Releases -1
    Token-Permissions 8
    Vulnerabilities 0
  3. Published packages Partly attested

    • PyPI controlflow Source link isn't a GitHub repo Build provenance attested
  4. What you install today No known advisories

    Latest release checked: controlflow 0.12.1. No published advisory affects it (OSV, checked 2026-10-09).

Changes to this chain

No change to package provenance, package source links, Scorecard coverage or license in HVTracker's daily snapshots of ControlFlow.

Evidence behind this score

Coverage A: 4 of 5 independent evidence types found.

  • GitHub repository data
  • Package downloads
  • Supply-chain checks
  • Public actions (missing)
  • Community mentions

Verify this score yourself

Every build re-issues ControlFlow’s score as an Ed25519-signed credential, valid for 7 days. You can check it offline against HVTracker’s published key; if anyone changes a number after signing, verification fails.

What this score doesn’t check

It covers who ships the code, not what the code does. It doesn’t read tool descriptions or prompts for injected instructions, watch runtime behaviour, or find bugs nobody has disclosed yet. For that, run a content scanner before you connect it, such as Cisco MCP Scanner or Snyk Agent Scan.

How ControlFlow compares in Agent Frameworks

  1. #96 nuwax 45.3 +0.5
  2. #97 EnterpriseAgentFramework 45.2 +0.4
  3. #98 ControlFlow 44.8 this agent
  4. #99 agentUniverse 44.6 −0.2
  5. #100 Fedml 44.4 −0.4

Bars show each HVTrust score; the tick marks ControlFlow’s 44.8.

Where the 44.8 comes from

HVTrust dimensions vs the Agent Frameworks average

44.8 / 100 · 100.0% confidence

ControlFlow Agent Frameworks average (129 agents)

Safety / Integrity50% OSSF Scorecard · 30% provenance · 20% signed commits
14.1 / 25
4.6 above avg 9.5
Identity / Provenance60% listing status · 40% build provenance
18.0 / 18
6.4 above avg 11.6
Transparency50% declared license · 50% OSSF Scorecard
12.0 / 17
in line with avg 12.0
Maintenance60% last-push freshness · 40% commit activity
0 / 20
13.6 below avg 13.6
AdoptionLog-scaled stars · package downloads
11.7 / 20
0.9 above avg 10.8

Quick Trust Read

What Would Improve It
Increase the share of verified signed commits for clearer maintainer identity.
Recent Changes
2026-09-23
Rank Moved
Rank dropped 626 spots (#441 → #1067)
2026-09-22
Rank Moved
Rank dropped 79 spots (#362 → #441)
2026-09-21
Rank Moved
Rank rose 703 spots (#1065 → #362)
Maintainer Checklist
Raise Scorecard signals Current OSSF Scorecard is 4.1/10. Tighten the weakest checks to improve public safety evidence.
Increase signed commits Raise the share of verified-signed commits to make maintainer identity and release history easier to trust.
Refresh maintenance signals The repo was last pushed 413 days ago. Fresh activity helps separate stable projects from stale ones.
Review Flags
[4.2.1] no meaningful activity in 12 months (last push 2025-08-22)
28.4
Activity sub-score · out of 100
#98

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

Signals refreshed 2026-10-09 08:15 UTC · Repo last pushed 413 days ago — may be stale

Rank Trend

2026-09-29 2026-10-09

Activity & Reach

Stars
1.4k
Forks
111
Last Push
2025-08-22
413 days ago
Commits (4 wk)
0
Downloads (7d)
1,274
pypi
HN mentions (30d)
0
Open Issues
35
Rank Change
▲2
was #1090

Analysis

Activity Inputs

28.4 / 100
StarsRepository reach
18.9 / 30
FreshnessLast push recency
0.0 / 25
ActivityRecent commits
0.0 / 25
CommunityFork signal
9.5 / 20

Common questions about ControlFlow

Public trust evidence for ControlFlow is thin: several supply-chain signals are missing or weak. This does not mean the project is unsafe — it means an outside observer cannot easily verify the usual integrity checks. Treat with extra scrutiny.
Does ControlFlow publish package provenance?
Yes. ControlFlow's package releases carry build provenance attestations, which cryptographically link the published package back to its source repository and CI workflow.
Does ControlFlow have an OpenSSF Scorecard?
ControlFlow has an OpenSSF Scorecard score of 4.1/10. 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 ControlFlow actively maintained?
Stale. The repository has not been pushed to in 413 days. Consider whether the project is still being maintained.
What license does ControlFlow use?
ControlFlow ships under Apache-2.0. A declared, OSI-approved license is one of the transparency signals HVTrust scores.
Are ControlFlow's commits signed?
28% of the last 100 commits to ControlFlow 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.

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
None detected
No MCP server signal detected.
Detailed evidence is not shown in the public view.
External Service Dependencies
high confidence
1 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 ControlFlow?

For maintainers

HVTrust scores ControlFlow 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.

Reputation Timeline

Signal history
Rank 31Warning Cleared 3Warning Issued 3HVTrust 1Grade 1
2026-09-23
Rank Moved
Rank dropped 626 spots (#441 → #1067)
2026-09-22
Rank Moved
Rank dropped 79 spots (#362 → #441)
2026-09-21
Rank Moved
Rank rose 703 spots (#1065 → #362)
2026-09-12
Rank Moved
Rank dropped 10 spots (#1052 → #1062)
2026-09-09
Rank Moved
Rank dropped 15 spots (#1033 → #1048)
2026-09-08
Rank Moved
Rank dropped 12 spots (#1021 → #1033)
2026-09-07
Rank Moved
Rank dropped 27 spots (#994 → #1021)
2026-09-06
Rank Moved
Rank dropped 12 spots (#982 → #994)
2026-09-05
Rank Moved
Rank dropped 48 spots (#934 → #982)
2026-09-04
Rank Moved
Rank dropped 30 spots (#904 → #934)
2026-09-03
Rank Moved
Rank dropped 61 spots (#843 → #904)
2026-09-02
Rank Moved
Rank dropped 43 spots (#800 → #843)
2026-09-01
Rank Moved
Rank dropped 31 spots (#769 → #800)
2026-08-31
Rank Moved
Rank dropped 32 spots (#737 → #769)
2026-08-30
Rank Moved
Rank dropped 25 spots (#712 → #737)
2026-08-29
Rank Moved
Rank dropped 47 spots (#665 → #712)
2026-08-28
Rank Moved
Rank dropped 20 spots (#645 → #665)
2026-08-27
Rank Moved
Rank dropped 16 spots (#629 → #645)
2026-08-26
Rank Moved
Rank dropped 98 spots (#531 → #629)
2026-08-24
Rank Moved
Rank dropped 12 spots (#519 → #531)
2026-08-23
Grade Changed
Trust grade C → D
2026-08-23
Rank Moved
Rank dropped 112 spots (#407 → #519)
2026-08-23
HVTrust Changed
HVTrust down 10.0pts (55.0 → 45.0)
2026-08-22
Rank Moved
Rank rose 15 spots (#422 → #407)
2026-08-19
Rank Moved
Rank dropped 12 spots (#412 → #424)
2026-08-17
Rank Moved
Rank rose 11 spots (#424 → #413)
2026-08-13
Rank Moved
Rank dropped 14 spots (#401 → #415)
2026-08-12
Rank Moved
Rank rose 15 spots (#416 → #401)
2026-08-10
Warning Issued
Warning: eligibility issues detected
2026-08-10
Rank Moved
Rank dropped 20 spots (#395 → #415)
2026-08-09
Warning Cleared
Warning cleared: eligibility issues resolved
2026-08-08
Rank Moved
Rank dropped 94 spots (#299 → #393)
2026-07-15
Warning Issued
Warning: eligibility issues detected
2026-07-15
Rank Moved
Rank dropped 15 spots (#257 → #272)
2026-07-14
Warning Cleared
Warning cleared: eligibility issues resolved
2026-07-14
Rank Moved
Rank dropped 14 spots (#243 → #257)
2026-07-13
Warning Issued
Warning: eligibility issues detected
2026-07-13
Rank Moved
Rank dropped 30 spots (#213 → #243)
2026-07-12
Warning Cleared
Warning cleared: eligibility issues resolved

Embed Badge Badge guide for maintainers →

For maintainers
HVTrust 44.8 Grade D
Markdown:
[![HVTrust](https://hvtracker.net/badge/controlflow.svg)](https://hvtracker.net/agents/controlflow)
HTML:
<a href="https://hvtracker.net/agents/controlflow"><img src="https://hvtracker.net/badge/controlflow.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 v4.4 · Raw JSON