Elva vs ReWeaver AI DriftDetector: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Elva and ReWeaver AI DriftDetector — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
Elva
Theneo
Reads your repositories to discover every API, scores and governs them, then exposes them to developers and AI agents via hosted MCP servers.
Key features
- Spec-Free API Discovery: Elva scans repository code directly to find endpoints and generates OpenAPI 3.1 as output, so no existing spec is needed to start.
- Endpoint Scoring: Every collection is graded on design, developer experience, AI readiness, security and performance, with the weakest collection surfaced first.
- AI Fix Pass: A one-click agent writes missing descriptions from code, types response schemas and documents auth, then rescores the collection.
- API Contracts: Per-audience contracts pin the exact endpoints and fields a partner, internal team, public developer or MCP client receives, excluding PII and internal fields.
- Breaking Change Enforcement: Each commit is diffed against published contracts, showing the schema diff, affected consumers and tools, and blocking publish by policy.
- Hosted MCP Servers: Contracts generate MCP servers hosted behind Elva's gateway with OAuth2, scoped keys, per-tool authorization and exportable call logs.
- MCP Playground and Agent Feedback: Test the server with a live model, then read the complaints agents file about confusing or failing tools, scored back into the catalog.
- Multi-Target Publishing: One approved contract ships as OpenAPI spec, Theneo docs, MCP server, Postman collection and a typed TypeScript SDK in sync.
Best for
- API Inventory Audit: Discover undocumented or forgotten endpoints across a large codebase and get a ranked list of what to fix first.
- Agent Enablement: Expose an internal service to Claude, Cursor or ChatGPT as a governed MCP server instead of hand-writing tool wrappers.
- Partner Integration Safety: Publish a restricted contract to an external partner and have Elva block commits that would break their integration.
- PII Scoping: Keep customer emails and internal ops annotations out of a public or agent-facing surface while the same endpoints serve them internally.
- Zombie Endpoint Retirement: Prove no active consumer references an endpoint before deleting it, using contract and call-log evidence.
- Enterprise Security Review: Satisfy SOC 2, ISO 27001 and GDPR questions and wire agent access into an existing SSO and SCIM identity provider.
- Documentation Drift Control: Keep docs, SDKs and Postman collections regenerated from code on every merge instead of maintained by hand.
ReWeaver AI DriftDetector
ReWeaver AI
Free scanner that gives any GitHub repo a Production Drift Ratio across nine production-readiness dimensions, scored commit by commit.
Key features
- Production Drift Ratio: A single score for how far a repository sits from production-ready, computed as drift frequency weighted by severity and estimated fix time, normalized per component.
- Nine-Dimension Rule Catalog: Findings are grouped across design consistency, accessibility, user experience, reliability, maintainability, architecture, testability, security and privacy, and AI code governance, each with its own severity band.
- Line-Level Findings: Reports exactly where code drifted from intent or standards rather than handing back a summary you have to go searching through.
- Commit-by-Commit Drift History: Every commit in the repository history is scored so you can pinpoint the moment the gap opened instead of estimating it.
- Technical Debt Estimate: Converts the findings into the time the same amount of drift would have taken a human to locate manually, giving the score a cost.
- Deterministic Engine: The same inputs produce the same findings every time, in contrast to LLM-on-diff reviewers whose output varies run to run.
- Zero-Retention Scanning: Code streams from GitHub into scanner memory without touching the browser or disk, the scan aborts if a blob ever lands on disk, and no clone, score, name or report is kept afterwards.
- Works Where You Already Do: The wider ReWeaver rule engine runs inline in VS Code or Cursor, in Figma and on pull requests, with suppressions requiring an explicit `// reweaver-ignore` recorded in git.
Best for
- Auditing AI-Generated Code: Score a repository that has absorbed heavy Copilot, Cursor or Claude Code output to find the omissions that compile cleanly but are not production-ready.
- Evaluating an Unfamiliar Repo: Paste a public GitHub URL to get a readiness score and severity breakdown before adopting a dependency or joining a project.
- Pinpointing Regression Onset: Use the per-commit history chart to identify the release or sprint where quality started diverging.
- Quantifying Technical Debt: Turn a backlog argument into a number by showing how much manual review time the accumulated drift represents.
- Accessibility and Security Sweeps: Surface missing ARIA roles, keyboard patterns and reproduced frontend vulnerabilities that pass functional review.
- Governing AI Code Acceptance: Make every ignored finding an explicit, git-visible human decision so there is an audit trail of what was accepted or overridden.