Comparison
An open-source, self-hosted DocuSign alternative
sign-cli is a free, open-source e-signature tool that runs on your own machine or infrastructure. It produces real PAdES (PKCS#7) signed PDFs fully offline — no signup, no API keys, no per-envelope fees, and no document ever leaving your environment. If you reach DocuSign for its API and chafe at the cost, the cloud round-trip, or the lack of a clean automation/agent surface, sign-cli is the local-first alternative.
Honest scope —
sign-cli is a CLI + MCP server for developers, ops teams, and AI agents — not a
point-and-click web app, and it doesn’t bundle identity verification/KYC or a household-name
trust brand. If you need a GUI for non-technical signers or turnkey regulatory packaging,
DocuSign may fit better. If you want self-hosted, offline, scriptable, agent-native signing with
no recurring per-signature cost, read on.
sign-cli vs DocuSign at a glance
| sign-cli | DocuSign | |
|---|---|---|
| Deployment | Self-hosted / local — runs on your machine or your infra | Cloud SaaS (your documents are uploaded) |
| Data residency | Documents never leave your environment; fully offline option | Documents stored on the vendor’s cloud |
| Pricing | Free, open source (MIT). No per-envelope fees | Subscription + per-envelope / API metering |
| Interface | CLI + MCP server (for developers, ops, and AI agents) | Web GUI + REST API |
| Signature standard | PAdES (PKCS#7 in /ByteRange), self-issued or your own cert | Proprietary + standards-based, vendor trust anchor |
| Verification | Cryptographic — signature value checked vs signer cert key, offline | Vendor-side verification / certificate of completion |
| Audit trail | Hash-chained, tamper-evident, local; optional RFC 3161 timestamp | Vendor audit trail / certificate |
| Agent / automation | Native MCP server — agents can request, sign, verify (human-gated) | API integration; no first-class MCP |
| Identity verification / KYC | Not built in (bring your own) | Built-in ID verification options |
| Best for | Devs, privacy/regulated teams, agents, cost-sensitive high volume | Non-technical users, broad recognition, turnkey compliance |
Why teams switch (the API/automation case)
- Cost. No per-envelope or per-API-call metering — sign as much as you want.
- Privacy / compliance. Documents are signed and verified locally; nothing is uploaded to a third party. A real unlock for healthcare, finance, legal, and regulated teams.
- Agent-native. sign-cli ships a native MCP server, so an AI agent can request, place, sign, and verify a document through a human-gated, auditable surface — never an unguarded auto-sign path.
- Verifiable & durable. Cryptographic PAdES verification plus a hash-chained audit trail and optional RFC 3161 timestamps — evidence that survives even if any vendor disappears.
- No lock-in. Open source (MIT). Need a hosted trust anchor too? sign-cli can also route through Dropbox Sign, DocuSign, or SignWell from the same interface.
Try it in five seconds
Install —
npx @drbaher/sign-cli demo runs the full offline lifecycle
(create → send → sign → verify → receipt). Or npm i -g @drbaher/sign-cli.
See the full feature tour on the sign-cli page, or the MCP server docs for the agent workflow. Source on GitHub.