Hacker News
Velonus – Open-source AppSec scanner that deduplicates SAST noise
16 points by AliAmmar15
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6 comments
codelion
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You can consider using Frame for the SAST part - https://github.com/lambdasec/frame
AliAmmar15
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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.
cbsmith
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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):
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 ScanPipeline