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Bot403

Invisible bot shield for HTML forms: the browser solves a proof of work and your server checks it.

MCP serverAgents

What we know

MCP serverYessource, checked 2026-11-15

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For the team behind Bot403

Growth plan: from $399 a month

SEO, AI search (how ChatGPT, Perplexity and Google describe Bot403), UX, CRO and support from one account manager, with a monthly report. Includes a Featured launch on db.fyi. Starts with a free audit.

Founding offer: $299 a month for your first 3 months, plus a free case study.

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Listed 2026-11-15 · updated 2026-11-15