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About
What is Proof
Proof sits on your website and surfaces real-time social proof notifications — live visitor counts, activity streaks, and recent signup alerts — to show anonymous visitors that others are already taking action. It's built for marketing teams and founders at SMBs and growth-stage companies who want to lift conversion rates without rebuilding their site. The standout capability is its A/B testing layer, which lets you run controlled experiments on which notification types and custom call-to-action messages actually move the needle for your specific audience. Setup is lightweight and a 14-day free trial is available, making it low-friction to test. Where it falls short: Proof has no listed native integrations, so connecting it to your existing CRM or marketing stack will require manual work or workarounds.
Capabilities
Key features
Visitor identification
de-anonymises anonymous website traffic
Outbound webhooks
event-driven integrations
Our verdict
Vanderbuild take
For marketing teams and founders who want a fast, low-code way to add visitor-facing social signals to their site, Proof is a straightforward fit in the Visitor Identification utility category — it does one thing and makes it visible. On the agentic readiness front, there's no API available and MCP status is unknown, which means UI-only operation; you can't drive this from an agent without scraping, so don't plan it into any automated GTM stack. Pricing is usage-based and sits at a mid-range budget tier — affordable for small teams to test, but expect costs to climb as traffic scales. The honest limitation here is the integration story: no native CRM or marketing platform connections are listed, which means Proof works as a standalone conversion layer rather than a connected piece of your broader stack.
Mateusz Sekta
Founder, vanderbuild
Learn more
Our Resources
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The wedge
Agentic stack profile
APINot publicNo public programmatic access.
API
No public API. Not usable from an agent without scraping.
Agentic readinessNoneNot usable from an agent without scraping.
Agentic readiness
No public API. UI-only. Not usable from an agent without scraping, which we don't recommend.
Stack roleSignal sourceWhere this tool slots into an agentic pipeline.
Stack role
Plays the role of Signal source in an agentic pipeline. Use it to surface buying intent — funding, hiring, job changes, web visits.
Compare
Proof alternatives
Tools that solve a similar problem — compared at a glance.
Proof(this tool)
- Pricing
- Usage-based
- Budget
- $$
- Best for
- Marketing, Founder
- Readiness
- None
- API
- No
Onlinesim
- Pricing
- Freemium
- Budget
- $$
- Best for
- Founder, GTM Engineer
- Readiness
- Capable
- API
- REST
Smspva
- Pricing
- Freemium
- Budget
- $
- Best for
- Founder, GTM Engineer
- Readiness
- Capable
- API
- REST
Answers
Frequently asked questions
Does Proof have a public API?
No — there's no publicly documented API as of today. Proof is operated through its UI.
How much does Proof cost?
Proof: pricing is usage-based, expect mid tier ($$) spend. Full pricing page: https://useproof.com/pricing.
Who is Proof best for?
Proof is built for Marketing, Founder. Fits SMB (1-50), Mid-market (50-500)-sized teams.