Vespasian

CLI tool that discovers API endpoints from real traffic and generates OpenAPI, GraphQL, or WSDL specs.

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Vespasian is an open-source command-line tool that discovers API endpoints from real HTTP traffic and automatically generates OpenAPI, GraphQL SDL, or WSDL specification files. It can capture traffic itself via headless browser crawling or import existing captures from Burp Suite, HAR files, or mitmproxy. It is built for penetration testers and security engineers mapping the API attack surface of applications that lack documentation.

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Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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