| What it does | The verification layer for AI code change
| AI agent observability, tracing and evaluation platform
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| Stage | MVP
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Freemium
| Freemium
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| Pricing | Free plan: $0/mo with 500 verifications/mo and unlimited local CLI runs. Pro: $59/mo with 10,000 verifications/mo (early access). Scale: $300/mo with 100,000 verifications/mo (early access). Enterprise: Custom pricing (early access).
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| Key features | - Verify arbitrary diffs from agents, codemods, or humans
- Three-verdict system: SAFE, UNSAFE, UNPROVEN
- Runs test suite on isolated shadow tree copy
- Changed-line coverage attestation for Python
- Reproducible verification report with audit-grade record
- MCP server for AI agents to verify before landing
- CI gate that blocks unsafe merges
- Syntax and imports validation gates
- Runs locally with no code upload to external service
| - Trace viewer showing model calls, tool calls, and retrievals
- Cost tracking per step with latency and token counts
- Root cause detection for failures
- Live streaming and replay of agent runs
- Automatic secret redaction before data transmission
- Semantic search across runs and steps
- Support for multiple frameworks and languages
- Evaluations and datasets for quality assessment
- Slack alerts and release gates
- Collaboration and code review tools
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| What makes it different | - Only system that proves changed lines are actually tested, not just that tests pass
- Works with any AI coding agent and integrates via MCP
- Code never leaves your machine; runs entirely locally
- Free local CLI with unlimited verifications, paid only for managed infrastructure
| - One-line setup with automatic detection of model and tool calls
- Identifies first failure point instead of surface errors
- Per-step cost visibility with no monthly surprises
- Automatic secret stripping keeps sensitive data local
- No agent code rewriting required
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 2 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 15 | 22 |
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| Referring domains (Majestic) | 4 | 1 |
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Refactron™
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