PromptSign.ai vs depproof

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

PromptSign.ai compared with depproof
Detail	PromptSign.ai	depproof
What it does	Code signing for AI skills and agents	Self-hosted application security and software composition analysis for open-source dependencies
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Not given	Freemium
Pricing	Not given	Scanner: Free for open source and organizations under $1M revenue; includes every repository, full transitive resolution for Java, JavaScript, Python, Go, license audit, OSV advisories with CI gate, HTML report and CycloneDX SBOM. Over $1M revenue, the Scanner license adds priority support and polic
Key features	Sign skills and agents with verified identity authentication Verify file integrity using SHA-256 fingerprints Offline verification without internet connection Public transparency log for accountability Revoke trust for compromised keys or bad actors Support GitHub, Google, Microsoft and company account authentication Command-line tool for integration with Claude and Codex hooks	Full transitive dependency tree resolution for Java, JavaScript, Python, and Go License classification and audit with allowed, review, and forbidden categories OSV advisory screening for vulnerability detection CycloneDX SBOM generation on every scan CI gate with configurable fail-on levels Dev and test dependency detection and flagging Runs as GitHub Action or self-hosted container Waivers with append-only audit trail for Hub Coverage reporting showing how much of dependency tree was resolved
What makes it different	Immutable transparency log that prevents silent key revocation Blocks unsigned or tampered instructions in Claude Code and Codex integration	Uses open OSV advisory data instead of proprietary vulnerability database Maven resolution directly from source with no build or lockfile needed Single container with no standing service or platform team required to operate Priced per product with all developers and repositories included, not per seat or per committer
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	14 no change since last check
Trust Flow (Majestic)	1	5
Citation Flow (Majestic)	19	24
Referring domains (Majestic)	27	24

3 details filled in for both companies.

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