DeerFlow

An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours.

Research & Data Python Listed MIT

Is DeerFlow safe? Promising trust profile, but some evidence still deserves review.

OSSF Scorecard 6.6 / 10
Provenance None
Signed commits 100%
Last push today
Compare DeerFlow
Suggest a correction

In detail: DeerFlow scores 67.5/100 (Grade B), ranked #416 of 1371 tracked open-source AI agent projects, on evidence coverage C (2 of 5 independent signal types). The public evidence: no package-provenance attestation found; OSSF Scorecard rates its supply-chain practices 6.6/10; 100% of recent commits are signed; last pushed 2026-10-10. Every point is earned from checkable signals — never paid placement. How scoring works →

How DeerFlow 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.

Chain of custody

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

  1. Source Signed

    github.com/bytedance/deer-flow, MIT, last pushed 2026-10-10. 100% of the last 100 commits carry a verified signature, so changes trace to a verified account.

  2. Review and release Mixed

    OpenSSF Scorecard rates the repository's practices 6.6/10 (scanned Oct 8, 2026). The checks that decide who can get a change released:

    • Code Review10
    • Branch Protection6
    • Signed Releasesn/a
    • Dangerous Workflow10
    • Token Permissions0
    • Pinned Dependencies3
    All 18 Scorecard checks
    Binary-Artifacts 10
    Branch-Protection 6
    CI-Tests 10
    CII-Best-Practices 0
    Code-Review 10
    Contributors 10
    Dangerous-Workflow 10
    Dependency-Update-Tool 10
    Fuzzing 0
    License 10
    Maintained 10
    Packaging 10
    Pinned-Dependencies 3
    SAST 1
    Security-Policy 10
    Signed-Releases -1
    Token-Permissions 0
    Vulnerabilities 0
  3. Published packages None

    No registry package. DeerFlow is used from its repository, so what you run is whatever you check out: pin a release tag or commit.

Changes to this chain

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

Evidence behind this score

Coverage C: 2 of 5 independent evidence types found.

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

Verify this score yourself

Every build re-issues DeerFlow’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 DeerFlow compares in Research & Data

  1. #7 Crawl4AI 70.5 +3.0
  2. #8 GPT Researcher 67.9 +0.4
  3. #9 DeerFlow 67.5 this agent
  4. #10 Vibe-Trading 65.1 −2.4
  5. #11 EvoScientist 62.5 −5.0

Bars show each HVTrust score; the tick marks DeerFlow’s 67.5.

Where the 67.5 comes from

HVTrust dimensions vs the Research & Data average

67.5 / 100 · 100.0% confidence

DeerFlow Research & Data average (37 agents)

Safety / Integrity50% OSSF Scorecard · 30% provenance · 20% signed commits
13.2 / 25
5.0 above avg 8.2
Identity / Provenance60% listing status · 40% build provenance
10.8 / 18
1.2 below avg 12.0
Transparency50% declared license · 50% OSSF Scorecard
14.1 / 17
2.6 above avg 11.5
Maintenance60% last-push freshness · 40% commit activity
20.0 / 20
6.8 above avg 13.2
AdoptionLog-scaled stars · package downloads
11.8 / 20
0.9 above avg 10.9

Quick Trust Read

What Would Improve It
Publish package provenance or release attestations for stronger supply-chain evidence.
Recent Changes
2026-09-23
Rank Moved
Rank dropped 240 spots (#147 → #387)
2026-09-21
Rank Moved
Rank rose 238 spots (#387 → #149)
Maintainer Checklist
Raise Scorecard signals Current OSSF Scorecard is 6.6/10. 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.
98.4
Activity sub-score · out of 100
#9

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 C is separate — it grades how many independent signal types back the score (2 of 5), so a high score on thin evidence stays visible. Full methodology →

Signals refreshed 2026-10-10 08:07 UTC · Repo last pushed today

Rank Trend

2026-09-29 2026-10-10

Activity & Reach

Stars
83.6k
Forks
11.6k
Last Push
2026-10-10
today
Commits (4 wk)
799
Downloads (7d)
—
HN mentions (30d)
—
Open Issues
522
Rank Change
=
was #416

Analysis

Activity Inputs

98.4 / 100
StarsRepository reach
29.5 / 30
FreshnessLast push recency
25.0 / 25
ActivityRecent commits
25 / 25
CommunityFork signal
18.9 / 20

Common questions about DeerFlow

DeerFlow 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 DeerFlow publish package provenance?
No published build provenance is currently detected for DeerFlow. This is common for open-source projects but means consumers cannot independently verify that the package on the registry matches the GitHub source.
Does DeerFlow have an OpenSSF Scorecard?
DeerFlow has an OpenSSF Scorecard score of 6.6/10. 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 DeerFlow actively maintained?
Actively maintained. The repository was pushed to within the last 1 day(s).
What license does DeerFlow use?
DeerFlow ships under MIT. A declared, OSI-approved license is one of the transparency signals HVTrust scores.
Are DeerFlow's commits signed?
100% of the last 100 commits to DeerFlow 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
high confidence
Implemented
DeerFlow appears to expose MCP server capabilities.
Detailed evidence is not shown in the public view.
External Service Dependencies
high confidence
6 detected
Public provider/service dependencies detected.
Credential signal: API keys or service config markers documented.
Tool / Plugin Surface
high confidence
Extensions
Extension based plugin/integration surface detected.
  • database
Detailed evidence is not shown in the public view.
Package Provenance Drift
N/A
No package source configured
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 DeerFlow'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.

2026-08-14
Provider Removed
Runtime surface shrank — no longer detected: Firecrawl
2026-08-12
Tool Surface Changed
Detected tool/plugin surface changed: marketplace → extension-based
2026-07-17
Provider Added
Runtime surface grew — new detected provider dependency: OpenRouter
2026-07-14
Tool Surface Changed
Detected tool/plugin surface changed: declared → marketplace

Maintain DeerFlow?

For maintainers

HVTrust scores DeerFlow 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 17Surface 2Surface 1Surface 1
2026-09-23
Rank Moved
Rank dropped 240 spots (#147 → #387)
2026-09-21
Rank Moved
Rank rose 238 spots (#387 → #149)
2026-09-07
Rank Moved
Rank dropped 25 spots (#337 → #362)
2026-09-05
Rank Moved
Rank dropped 62 spots (#267 → #329)
2026-08-31
Rank Moved
Rank dropped 28 spots (#216 → #244)
2026-08-26
Rank Moved
Rank dropped 16 spots (#196 → #212)
2026-08-24
Rank Moved
Rank dropped 11 spots (#184 → #195)
2026-08-22
Rank Moved
Rank rose 16 spots (#200 → #184)
2026-08-19
Rank Moved
Rank dropped 10 spots (#180 → #190)
2026-08-17
Rank Moved
Rank rose 12 spots (#192 → #180)
2026-08-14
Provider Removed
Runtime surface shrank — no longer detected: Firecrawl
2026-08-14
Rank Moved
Rank rose 23 spots (#208 → #185)
2026-08-13
Rank Moved
Rank dropped 16 spots (#192 → #208)
2026-08-12
Tool Surface Changed
Detected tool/plugin surface changed: marketplace → extension-based
2026-08-12
Rank Moved
Rank rose 24 spots (#216 → #192)
2026-08-10
Rank Moved
Rank dropped 17 spots (#198 → #215)
2026-08-08
Rank Moved
Rank dropped 34 spots (#154 → #188)
2026-07-17
Provider Added
Runtime surface grew — new detected provider dependency: OpenRouter
2026-07-14
Tool Surface Changed
Detected tool/plugin surface changed: declared → marketplace
2026-07-14
Rank Moved
Rank dropped 15 spots (#118 → #133)
2026-07-13
Rank Moved
Rank dropped 14 spots (#104 → #118)

Embed Badge Badge guide for maintainers →

For maintainers
HVTrust 67.5 Grade B
Markdown:
[![HVTrust](https://hvtracker.net/badge/deerflow.svg)](https://hvtracker.net/agents/deerflow)
HTML:
<a href="https://hvtracker.net/agents/deerflow"><img src="https://hvtracker.net/badge/deerflow.svg" alt="HVTrust"></a>

Other agents in Research & Data

Data sources
GitHub REST API (repo, commits, stars, forks, license) · OpenSSF Scorecard CLI
Each agent's signals refresh once daily across 6 staggered batches. Methodology v4.4 · Raw JSON