SignForge is an AI e-signature platform with W3C-verifiable proof, a developer API and 12 free PDF tools. Free plan with 10 envelopes a month.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
SignForge is an AI-native e-signature and agreement platform for preparing, sending, signing, tracking and verifying documents. Its main pitch is proof that travels with the file: each signed PDF carries a W3C Verifiable Credential and an entry in a public transparency log, so a third party can check it without asking the vendor.
SignForge is a product of CTRL 18, a cybersecurity and digital trust company. The about page lists Ajay Dubey as founder and CEO of CTRL 18, Abhishek Sharma as co-founder and CTO, and Shobana Ajay as co-founder and head of presales at SignForge. The homepage describes use in 110 countries.
There are two starting points. Users can upload a PDF and drop in signature fields, or describe a document to the Amanda AI agent, which generates it with fields already placed. The platform lists 12 field types, including signature, date and text.
Signers receive a secure link and sign from any device without an account, by drawing or typing. The signed PDF then gets W3C verification proof embedded automatically. Users can also self-sign without sending an email, and each signature records IP address, timestamp and consent in an audit trail.
Amanda is the headline feature: an AI agent with 42 tools that drafts 12+ legal document types, places fields, sends for signing and checks status through conversation. Verification is the other focus, with an embedded W3C Verifiable Credential, a public Merkle transparency log and SHA-256 hashing.
Supporting tools include a private document locker with categories and expiry dates, saved signatures, bulk send, and bulk signing for one authority executing many identical documents. Developers get a REST API, embeddable widget, webhooks and an 18-tool MCP server. Twelve free PDF tools, such as merge, split and compress, need no account.
SignForge is an AI-native e-signature and agreement platform built by CTRL 18. It lets users generate or upload documents, send them for signing, and verify signed PDFs using W3C Verifiable Credentials and a public transparency log.
SignForge has a Free plan at $0 with 10 envelopes per month and no time limit. Paid plans are Pro, Business and Enterprise, but prices for Pro and Business are not published on the pages reviewed. Annual billing gives two months free.
Yes. The Free plan needs no credit card, includes 10 envelopes per month, and keeps signed documents with no time limit. The live API, webhooks and MCP server are also included on Free.
No. Recipients receive a secure link and can review and sign from any device by drawing their signature or typing a name, with no registration or password.
SignForge states compliance with the ESIGN Act, UETA and eIDAS. It records who signed, when and from where, with a document fingerprint, as evidence. The site notes that some documents still need ink, depending on the transaction and country.
Amanda is SignForge's AI assistant with 42 tools. It can generate documents from a prompt, place fields, send documents for signing and check status through conversation.
SignForge provides a REST API, embeddable signing widget, webhooks and an MCP server for AI agents. The site mentions automating from Python, Node.js, n8n and Retool.
Upload a SignForge-signed PDF to the verify page. It checks the W3C Verifiable Credential, the transparency log entry and the SHA-256 hash, and the document can also be verified offline using embedded keys.