Code-health intelligence, not a vuln scanner.
Snyk Code finds vulnerabilities. repowise scores defect risk, maintainability, and static performance health, with a wiki, decisions, and agent-native MCP, open source and self-hostable. Different questions, often run together.
Snyk Code answers 'which code is vulnerable.' repowise answers 'which code is likely to break, and which is hard to maintain.' Those are different questions, and most teams need both answered.
repowise is a code-health platform, not a SAST tool. It scores defect risk, maintainability, and static performance health that a security scanner never produces, then bundles a wiki, decisions, and agent context, so it sits alongside Snyk rather than replacing it.
Which one is right for you?
Choose repowise if
- You want to know which code is likely to break or is hard to maintain, not which code is vulnerable
- You want a defect-risk score you can reproduce on your own repo, plus maintainability and performance health
- You want health alongside an auto-generated wiki, architectural decisions, and agent-native MCP
- You want an open-source, self-hostable layer with every heuristic inspectable
- You want AI coding agents to answer from a real model of your codebase
Choose Snyk Code if
- You need vulnerability and CVE detection across code and dependencies (SAST and SCA)
- You need security auto-fix and remediation workflows
- You need an AppSec program with policy, compliance, and security gates
- You are buying a security scanner, not a code-health platform
repowise vs Snyk Code
| Capability | repowise | Snyk Code |
|---|---|---|
| Vulnerability / CVE detection (SAST) | Not included | Included |
| Dependency / open-source scanning (SCA) | Not included | Included |
| Security auto-fix and remediation | Not included | Included |
| AppSec policy, compliance, and security gates | Not included | Included |
| Deterministic defect-risk score (validated) | Included | Not included |
| Maintainability scoring | Included | Not included |
| Static performance-risk findings | Included | Not included |
| Vulnerability detection itself (SAST/SCA scanning)repowise triages known CVEs by reachability; it does not detect new vulnerabilities in your source | Not included | Included |
| Usage-aware CVE triage (KEV/EPSS, filtered to reachable code)repowise scores and filters findings on your dependency graph; Snyk ranks by CVSS severity | Included | Partial support |
| Auto-generated wiki and documentation | Included | Not included |
| Architectural decision records | Included | Not included |
| Agent-native MCP context (overview, answers, risk, why) | Included | Not included |
| Dead code detection | Included | Not included |
| Open source and self-hostable | Included | Not included |
Self-assessed against publicly documented features as of June 2026. A dash means partial or limited support. Vendor capabilities change, so please verify against Snyk Code's current docs before deciding.
Health and security answer different questions.
The defect-risk, maintainability, and performance signals Snyk was never built to produce, plus the context layer around them.
Which code is likely to break
repowise scores every file from 21 deterministic biomarkers across three pillars: defect risk, maintainability, and static performance. The defect score is validated against real bug labels and reproducible on your own repo, a different signal from a vulnerability finding.
- Cross-project ROC AUC 0.74, up to 0.90 per repo
- 2.3x more defects under a fixed budget on the open 21-repo benchmark
- Maintainability and static performance risk scored as co-equal views
- AGPL-3.0: inspect, fork, self-host every heuristic
Health, docs, decisions, and agent context together
Snyk Code is a security product. repowise puts health alongside an auto-generated wiki, architectural decision archaeology, git intelligence, and ten MCP tools, so the same index serves your quality goals and your AI agents.
- Auto-generated wiki, rebuilt on every commit
- Architectural decisions mined from multiple sources
- 35.6x fewer tokens loading one commit's context vs a raw file dump
- MCP tools for Claude Code, Cursor, Cline, and Codex
Triage on top of a scanner, not a replacement for one
repowise does not detect vulnerabilities in your own source, that stays Snyk's or your SAST tool's job. What it adds is a reachability layer on the same dependency graph that powers code health: known CVEs scored with KEV and EPSS, then filtered to the code you actually reach, plus secret detection across full git history. The scanning path is deterministic, no model in the loop.
- KEV/EPSS scoring, filtered to reachable code, not a flat CVSS list
- Secret detection across full git history, not just the current checkout
- Zero LLM calls in the scanning path: reproducible, auditable findings
- Pairs with a SAST or SCA tool in the same pipeline; does not replace it
One health score, three separate questions.
Snyk Code produces a ranked list of security findings. repowise's health score is not one number pretending to cover everything, it is three co-equal pillars, each with its own marker set and its own answer.
Defect risk (21 markers)
The primary 1-to-10 score: which files are likely to produce a bug. Validated cross-project at ROC AUC 0.74 (95% CI 0.68 to 0.79, up to 0.90 per repo).
Maintainability (8 markers)
Readability and change-cost smells that do not necessarily predict bugs but make code slower and riskier to touch. Scored separately, never blended into the defect headline.
Performance risk (20 markers)
Static I/O-in-loop and N+1 shapes that waste work at runtime. A different category from a security finding, and from the other two health pillars.
49detectors total across the three pillars. None of this overlaps with vulnerability detection, Snyk Code's job is a different question and a different scan entirely.
Self-hosted, no signup, no API key for the first index.
Snyk Code is cloud-first: an account and a connected org are part of the setup. repowise's deterministic layer runs before you touch a login screen.
No API key for the first index
pip install repowise, then repowise init --yes --no-prose builds the dependency graph, git history, and full three-pillar health score with zero LLM calls and nothing to configure.
Self-hosted on your own infrastructure
Run the whole platform in your own VPC or on a laptop. Code is processed transiently and never persisted when self-hosted, and the core is AGPL-3.0, every heuristic public and inspectable.
Bring your own LLM key, or skip it
The health score, dead-code detection, and git intelligence are fully deterministic and free. An LLM key is only needed for the optional wiki narrative pass.
Ten MCP tools, same index
The same deterministic index that scores health also answers questions for Claude Code, Cursor, Cline, and Codex through get_overview, get_answer, get_context, get_risk, get_why, and more.
The honest version
Snyk Code is a security tool, and for security it is the stronger choice. It does vulnerability and CVE detection across code and dependencies, auto-fixes for security issues, and the whole AppSec and SCA workflow with policy, compliance, and security gates that repowise does not attempt. repowise is a code-health platform: it scores defect risk, maintainability, and performance health, not vulnerabilities. If your goal is finding and fixing security issues, you likely want Snyk, and many teams run both, because health and security are different questions answered best by different tools.
What repowise costs.
The repowise core is open source under AGPL-3.0 and free to self-host, with every heuristic public. Hosted tiers: Free for public repos, Pro at $15 per month, Teams at $60 per month, and custom enterprise licensing when you need it. Snyk Code's pricing changes, so verify it on their site, then compare it with a tier you can read line by line.
Questions, answered
Is repowise an alternative to Snyk Code?
Only if your question is about code health rather than security. Snyk Code is a SAST and SCA tool that finds vulnerabilities and auto-fixes them; repowise scores defect risk, maintainability, and static performance health, and adds an auto-generated wiki, decisions, and agent-native context. For most teams the two are complementary, not substitutes.
Does repowise replace Snyk Code for security?
No, and it does not try to. repowise is a code-health platform, not a vulnerability scanner: it does not do dependency CVE detection, full SAST coverage, or security auto-fix. If your goal is finding and remediating vulnerabilities, you likely want Snyk, or you run repowise and Snyk side by side.
Then why compare repowise to Snyk Code at all?
Because both sit in the same review and CI workflow and both claim to govern AI-generated code, but they measure different things. Snyk asks which code is vulnerable; repowise asks which code is likely to break or is hard to maintain. Knowing which question you are answering keeps you from buying the wrong tool.
What does repowise score that Snyk Code does not?
A deterministic 1-to-10 health score for every file from 21 biomarkers, across three pillars: defect risk, maintainability, and static performance risk. Snyk does not produce a defect-risk score, a maintainability score, or a performance-shape score; its output is a ranked list of security findings.
Is repowise's defect score validated?
Yes, and you can reproduce it. repowise publishes its predictive performance against real defect labels: cross-project ROC AUC 0.74 (95% CI 0.68 to 0.79, up to 0.90 per repo), and on its open 21-repo benchmark the score surfaced 2.3x more defects under a fixed review budget. That is a code-health claim about defects, separate from any security or vulnerability comparison.
Is repowise open source? Can I self-host it?
Yes. The repowise core is open source under AGPL-3.0, so every biomarker and weight is inspectable, and you can self-host the whole platform with zero telemetry. Snyk Code is a commercial SaaS with a free tier for individual and open-source use.
Can repowise give AI coding agents codebase context?
Yes, and this is a core difference. repowise exposes the index through ten MCP tools (get_overview, get_answer, get_context, get_risk, get_why, and more) so Claude Code, Cursor, Cline, and Codex answer from a real model of your code. Loading one commit's context this way costs 35.6x fewer tokens than reading raw files. Snyk's surface is built around security findings, not codebase comprehension.
Does repowise do anything security-adjacent at all?
Yes, but it is triage, not detection. On top of the dependency graph it already builds, repowise scores known vulnerabilities with KEV and EPSS and filters them to the code you actually reach, and scans full git history for secrets, a key committed and later removed still shows up as a live exposure. It does not do SAST taint analysis or find new vulnerabilities in your own source; that stays Snyk's job. The scanning path is deterministic, no model in the loop.
Do I need an account or an API key to try repowise?
No. pip install repowise, then repowise init --yes --no-prose builds the dependency graph, git history, and the full three-pillar health score locally with zero API key and zero LLM spend. Snyk Code's workflow is cloud-first: connecting an account and an org is part of getting started.
The defect-validated score, in depth.
Reachability-aware CVE triage and secrets, not SAST parity.
Where Snyk and SAST stay the right tool, and what repowise adds.
Self-hostable code intelligence for large orgs.
Where Snyk Code and repowise fit in the wider category.
The code-health category, surveyed.
See the three-pillar health score on a real index, no signup.