Velonus – Open-source AppSec scanner that deduplicates SAST noise
github.comYou can consider using Frame for the SAST part - https://github.com/lambdasec/frame
no i havent but ill definently look into it
Hi HN, Im building Velonus. Developers are drowning in noisy security alerts, so I built an automated AppSec tool to clean up the output.
Right now, Phase 1 is an open-source CLI. It wraps standard static analysis tools (Semgrep, Bandit, pip-audit, Safety, and TruffleHog) and runs them in parallel using asyncio.
Instead of dealing with 5 different JSON formats, It maps everything to a unified finding schema with CWE and OWASP Top 10 tags, creates a deterministic hash for each finding, and deduplicates the noise. It outputs to a clean terminal UI or SARIF 2.1.0 for CI integration.
You can install it using (pip install velonus)
I'd love for you try it out on your messiest Python repos and let me know how the deduplication holds up. Happy to answer any technical questions about the architecture.
Installing collected packages: sortedcontainers, boolean.py, urllib3, typing-extensions, tqdm, tomlkit, tomli-w, tomli, tenacity, stevedore, shellingham, ruamel-yaml, regex, PyYAML, pyparsing, pygments, pycparser, platformdirs, pip-api, packaging, packageurl-python, msgpack, mdurl, marshmallow, MarkupSafe, license-expression, joblib, idna, h11, filelock, defusedxml, click, charset_normalizer, certifi, annotated-types, annotated-doc, typing-inspection, requests, pydantic-core, py-serializable, pip-requirements-parser, nltk, markdown-it-py, jinja2, httpcore, dparse, cffi, anyio, rich, pydantic, httpx, cyclonedx-python-lib, cryptography, CacheControl, typer, safety-schemas, joserfc, bandit, pip-audit, authlib, safety, velonus Successfully installed CacheControl-0.14.4 MarkupSafe-3.0.3 PyYAML-6.0.3 annotated-doc-0.0.4 annotated-types-0.7.0 anyio-4.13.0 authlib-1.7.2 bandit-1.9.4 boolean.py-5.0 certifi-2026.4.22 cffi-2.0.0 charset_normalizer-3.4.7 click-8.3.3 cryptography-48.0.0 cyclonedx-python-lib-11.7.0 defusedxml-0.7.1 dparse-0.6.4 filelock-3.29.0 h11-0.16.0 httpcore-1.0.9 httpx-0.28.1 idna-3.15 jinja2-3.1.6 joblib-1.5.3 joserfc-1.6.5 license-expression-30.4.4 markdown-it-py-4.2.0 marshmallow-4.3.0 mdurl-0.1.2 msgpack-1.1.2 nltk-3.9.4 packageurl-python-0.17.6 packaging-26.2 pip-api-0.0.34 pip-audit-2.10.0 pip-requirements-parser-32.0.1 platformdirs-4.9.6 py-serializable-2.1.0 pycparser-3.0 pydantic-2.13.4 pydantic-core-2.46.4 pygments-2.20.0 pyparsing-3.3.2 regex-2026.5.9 requests-2.34.2 rich-15.0.0 ruamel-yaml-0.19.1 safety-3.7.0 safety-schemas-0.0.16 shellingham-1.5.4 sortedcontainers-2.4.0 stevedore-5.7.0 tenacity-9.1.4 tomli-2.4.1 tomli-w-1.2.0 tomlkit-0.15.0 tqdm-4.67.3 typer-0.25.1 typing-extensions-4.15.0 typing-inspection-0.4.2 urllib3-2.7.0 velonus-1.0.0a1
(venv) $ velonus scan data
Traceback (most recent call last):
ModuleNotFoundError: No module named 'scanner'File "~/venv/bin/velonus", line 5, in <module> from shield.main import app File "~/venv/lib/python3.12/site-packages/shield/main.py", line 15, in <module> from shield.commands import auth, config, scan File "~/venv/lib/python3.12/site-packages/shield/commands/scan.py", line 32, in <module> from scanner.pipeline import ScanPipelineThank you for letting me know, it turns out its because the published distribution or pyproject didn't expose that package. I am looking into it right now thank you
should be fixed now :)