Security questionnaires, with receipts
Substanto drafts each answer from your own SOC 2 and security policies, shows the source line where the evidence supports it, and reuses your approved answers. When your documents do not cover something, it says so instead of guessing.
Works with SIG, CAIQ, VSAQ, and custom .xlsx or .csv files. Start free with 300 answers, enough for a full CAIQ (261 questions), no credit card, no sales demo.
No integration. No onboarding call. Three steps from a blank questionnaire to a filled one you can send.
SIG, CAIQ, VSAQ, or a custom .xlsx or .csv. Substanto auto-detects the questions.
Reused from your library or drafted from your SOC 2 and policies, with the source cited wherever the evidence supports it.
Get your own template back, filled in, with a status on every row, and the source wherever there is one.
300 free answers to start, enough for a full CAIQ (261 questions). No credit card. Self-serve, no sales call. Start free at substanto.com.
Substanto is for B2B SaaS companies that already have a SOC 2 (or ISO 27001) and keep getting security questionnaires from their buyers. The people who use it are the ones who actually fill these out: security and GRC leads, sales engineers, and founders at small and mid-size SaaS teams selling into enterprise, fintech, and healthcare buyers. If a buyer just sent you a SIG, CAIQ, or a custom security questionnaire and you have a SOC 2 to answer it from, Substanto is built for you.
Substanto drafts each answer from your own SOC 2 and security policies and shows the source line where the evidence supports it, so you can check every answer before it goes out.
Upload your SOC 2 and policies to Substanto and the questionnaire file (SIG, CAIQ, VSAQ, or a custom Excel). It drafts each answer with a citation where the evidence supports it, and flags anything your documents don't support, then hands the file back filled in.
Substanto drafts from your uploaded documents and your own answer library. When the evidence does not cover a question, it says "no evidence found" instead of guessing, and it checks for answers that claim more than the source supports, and shows what it changed.
No. Substanto is self-serve with 300 free answers to start, no credit card and no sales call.
SIG (Lite and Core), CAIQ v4, VSAQ, and custom questionnaires in Excel or CSV. It fills answers back into your buyer's own file, preserving the original structure.