StartupHistory

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Company records / promptfoo.dev

Promptfoo

Promptfoo (promptfoo.dev): no confident changes recorded yet; website history since November 2026. Homepage last checked 6 November 2026.

First recorded website

Observed 6 November 2026

Our earliest capture with readable facts. This is our first observation, not when the company introduced these things. These website claims are not independently verified.

How it described itself

Ship agents, not vulnerabilities

The AI Security Platform that catches vulnerabilities in development. Trusted by 156 of the Fortune 500 and 300,000+ developers worldwide.

All facts above belong to this capture. Unlisted fields mean we have no readable observation, not that they were absent.

Recorded changes

Newest observations first. Each interval bounds when the website changed; it is not an exact event date.

No changes recorded yet. Missing observations do not mean the company has not changed.

How it describes itself

Similar headlines are grouped together. The quote shown is from the last capture in each group, not necessarily the exact wording throughout that period.

  1. Seen November 2026 · 1 capture · latest observed messagingShip agents, not vulnerabilities

    The AI Security Platform that catches vulnerabilities in development. Trusted by 156 of the Fortune 500 and 300,000+ developers worldwide.

    This wording observed 6 November 2026.

Cite this record

StartupHistory, “Promptfoo” company record, https://startuphistory.org/c/promptfoo.dev

Machine-readable: /c/promptfoo.dev.json. How changes are found: method.