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Ultimath — stop hallucinating numbers | math API + MCP
Verify mathematical expressions reliably using five independent numeric engines via REST API and MCP.
Past Editor's Pick
Type 100! into the live box and a 158-digit answer lands instantly, seven engines cross-checking it. The (1e16+1)-1e16 demo shows floating point quietly losing the 1, then hands back the number that's actually there.
ultimath.ai
Try live demo Live checked1 week ago
Try this first: Enter a math expression to verify it.
- Open source
- Yes
MathDeveloper ToolApiAgentLlm“stop hallucinating numbers”“five independent numeric engines”“math API”“MCP”
Tech Profile
- Hosting
- Cloudflare
- Built by
- Solo maker
- Time
- Multiple weeks
- Built with AI
- Claude
- AI help
- Meaningful
- Open source
- Yes
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Source
X · 1 month ago
Not vibe-coded, rather AI assisted dev:
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