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bytedance/deer-flow

https://github.com/bytedance/deer-flow.git · scanned 2026-06-23 23:06 UTC (1 month ago) · 10 languages

854 raw signals (300 security + 554 graph) 11/13 scanners ran 3rd percentile · Python · large (100-500K LoC)

UNIFIED Repobility · multi-layer engine · AI coders

Complete repo analysis

Last scanned 1 month ago · v1 · 605 actionable findings from 2 signal sources. 232 repeated signals grouped for readability. Security checks, system graph analysis, and verified AI-agent feedback are merged into one review queue.

JSON
Score breakdown â 2026-05-18-v5
Component Sub-score Weight Contribution
structure_score 40.0 0.15 6.00
security_score 100.0 0.25 25.00
testing_score 100.0 0.20 20.00
documentation_score 100.0 0.15 15.00
practices_score 70.0 0.15 10.50
code_quality 46.0 0.10 4.60
Overall 1.00 81.1
security_score may be inflated — optional security scanners were skipped on this fast scan
Severity distribution — click a segment to filter
Active filters: excluding tests × Reset all

Bug-class explainers. Each card groups findings of the same shape — these are the patterns most likely to ship to prod and reappear in future scans unless you systematically fix the cause, not just the instance.

Duplicates & near-duplicates 5 findings
What it is: Same function copy-pasted into multiple modules with minor variations.
Why it matters: Each copy drifts independently — bug fixes apply to one, miss the others.
How AI causes it: AI completes the same pattern in each file rather than refactoring to a shared helper.
Fix approach: Extract the duplicated logic into the most general module both call sites already import. Add tests at the helper level.
5 matching findings on this repo
  • low Near-duplicate function bodies in 2 places repo-level
  • low Near-duplicate function bodies in 3 places repo-level
  • low Near-duplicate function bodies in 4 places
  • low Near-duplicate function bodies in 5 places
  • low Near-duplicate function bodies in 6 places
View all duplicates & near-duplicates findings →
Legacy markers 3 findings
What it is: TODO, FIXME, XXX, HACK comments. Often indicate a known-broken path the author meant to fix.
Why it matters: Each marker is an unfinished thought. Production code shouldn't ship with debt that's documented but not tracked.
How AI causes it: AI mirrors the style of the codebase, so existing TODOs propagate into new code.
Fix approach: Convert each into a ticket. Delete the comment when the ticket lands. Use a pre-commit hook to block new TODOs without an issue link.
3 matching findings on this repo
  • high [MINED106] Phantom test coverage: test_no_legacy_memory_is_noop: Test function … backend/tests/test_migration_user_isolation.py:124
  • low Old/deprecated-named symbol `other_legacy` in backend/tests/test_paths_user_iso…
  • low Old/deprecated-named symbol `legacy_backup` in backend/scripts/migrate_user_iso…
View all legacy markers findings →
Commented-out code 75 findings
What it is: Lines of source that were intentionally disabled but never deleted.
Why it matters: Git already remembers history — commented code rots, becomes wrong, and adds noise to diffs.
How AI causes it: AI sometimes comments out broken code instead of fixing it. Reviewers approve out of inertia.
Fix approach: Delete. Trust `git log`. If you really need to remember, save it in a notes file under `docs/`.
12 matching findings on this repo
  • info Commented-code block (6 lines) in frontend/tests/unit/core/threads/infinite.tes…
  • info Commented-code block (6 lines) in frontend/tests/unit/core/agents/api.test.ts:1…
  • info Commented-code block (8 lines) in frontend/tests/e2e-real-backend/real-backend-…
  • info Commented-code block (5 lines) in frontend/tests/e2e/thread-list-infinite-scrol…
  • info Commented-code block (6 lines) in frontend/src/components/workspace/chats/chat-…
  • info Commented-code block (5 lines) in frontend/src/components/ai-elements/streamdow…
  • info Commented-code block (5 lines) in frontend/src/app/workspace/chats/page.tsx:52
  • info Commented-code block (5 lines) in frontend/src/app/workspace/chats/[thread_id]/…
  • info Commented-code block (9 lines) in frontend/src/app/workspace/agents/new/page.ts…
  • info Commented-code block (5 lines) in frontend/src/core/threads/hooks.ts:107
  • info Commented-code block (5 lines) in frontend/src/core/threads/export.ts:156
  • info Commented-code block (5 lines) in frontend/src/core/streamdown/preprocess.ts:5
View all commented-out code findings →
Config drift 19 findings
What it is: Settings duplicated across env files, Docker compose, K8s, and code defaults, all with slightly different values.
Why it matters: Production behaviour depends on whichever copy your loader reads first. Subtle bugs in staging that don't reproduce in dev.
How AI causes it: AI writes new config from memory rather than reading the existing source.
Fix approach: Pick one source of truth (env vars + a settings module). Have every other place import from there. Lint for duplicates in CI.
12 matching findings on this repo
  • high [MINED112] FastAPI PUT /mcp/config has no auth: Handler `update_mcp_configurati… backend/app/gateway/routers/mcp.py:289
  • high [MINED112] FastAPI PUT /api/mcp/config has no auth: Handler `mcp_put` is regist… backend/tests/test_auth_middleware.py:150
  • high [MINED106] Phantom test coverage: test_wait_for_kubeconfig_accepts_file: Test f… backend/tests/test_provisioner_kubeconfig.py:20
  • low Possibly dead Python function: remove_provider_config backend/app/channels/runtime_config_store.py:92
  • low Possibly dead Python function: set_memory_config backend/packages/harness/deerflow/config/memory_c…
  • low Possibly dead Python function: peek_current_app_config backend/packages/harness/deerflow/config/app_conf…
  • low Possibly dead Python function: set_summarization_config backend/packages/harness/deerflow/config/summariz…
  • low Stray `console.log` in TS/JS — frontend/src/core/config/index.ts:22
  • medium insecure hash algorithm sha1 — backend/packages/harness/deerflow/config/paths.p…
  • high Agent instruction/config may expose a secret: .github/copilot-instructions.md .github/copilot-instructions.md:76
  • low Old/deprecated-named symbol `model_copy` in backend/tests/test_mcp_config_secre…
  • low Old/deprecated-named symbol `config_copy` in backend/tests/test_custom_agent.py…
View all config drift findings →
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