S

SignNow

E-signature
OpsSales MCPAPI/CLIBulk import

Independent review. IonBin has no partnership with SignNow and was not paid for this page. Our evaluation is our own, based on public documentation and our research. Product names are trademarks of their owners and are used for identification only. How disclosure works.

E-signature from airSlate with templates, signing links and an API. Its official open-source MCP server, hosted or self-run, lets an AI assistant create documents from templates, send invites and check status. Not legal advice.

Not advice

IonBin provides general information and software comparisons, not tax, legal, accounting or financial advice. Tax and legal rules vary by situation and jurisdiction; consult a qualified professional (CPA, enrolled agent or attorney) before acting.

AI tools can make mistakes. Verify every figure against the original documents and official IRS or state guidance before filing or signing.

Redact Social Security numbers, account numbers and EINs before uploading documents to any AI assistant, and check its data-retention settings. Upload originals only to the filing or signing software.

Requirements vary by state. File through official sources such as the USPTO trademark search and your state’s Secretary of State site.

Best for
  • Small teams sending agreements from templates
  • Agent workflows that need a signature step
Not for
  • Contract drafting or legal review

Top use cases

  • Create documents and send signing invites from an AI assistant over MCP source ↗

In depth

Plans

Billed annually, SignNow lists Basic at $8, Business at $15 and Advanced at $30 per month ($20, $30 and $50 monthly), all with unlimited users and 100 invites a year. Enterprise is $1.50 per signature invite. Bulk send starts on Business. Checked 2026-10-17. source ↗

MCP tools

The MCP server can list templates, create documents or groups from them, upload files, pre-fill text fields, send email or self-sign invites, send reminders, check invite status and create embedded signing sessions. source ↗

How to use it with AI

How SignNow connects to each AI platform: native connector or MCP, API through code the agent writes, browser control, or file upload.

PlatformMCP / connectorAPI (agent-written code)BrowserUpload / export
Claude (incl. Claude Code) Confirmed Named in SignNow MCP docs SignNow docs ↗Claude (incl. Claude Code) MCP docs ↗ Confirmed Claude (incl. Claude Code) can run code; SignNow publishes an API. SignNow API ↗Claude (incl. Claude Code) docs ↗ Confirmed Claude Code with the Claude in Chrome extension (Chrome, Edge and other Chromium browsers) Claude (incl. Claude Code) browser docs ↗ Confirmed Export from SignNow, then works on the files in your project; chat accepts attachments Claude (incl. Claude Code) docs ↗
OpenAI Codex Not documented SignNow has an official MCP server and OpenAI Codex supports MCP, but SignNow's docs don't name this pairing. Auth setup may differ. SignNow MCP docs ↗OpenAI Codex MCP docs ↗ Confirmed OpenAI Codex can run code; SignNow publishes an API. SignNow API ↗OpenAI Codex docs ↗ Confirmed Only in the ChatGPT desktop app; not in the Codex CLI or IDE extension OpenAI Codex browser docs ↗ Confirmed Export from SignNow, then works on local repositories OpenAI Codex docs ↗
Google Antigravity Not documented SignNow has an official MCP server and Google Antigravity supports MCP, but SignNow's docs don't name this pairing. Auth setup may differ. SignNow MCP docs ↗Google Antigravity MCP docs ↗ Confirmed Google Antigravity can run code; SignNow publishes an API. SignNow API ↗Google Antigravity docs ↗ Confirmed Browser subagent via /browser, documented as an Antigravity App feature; the IDE has separate browser docs Google Antigravity browser docs ↗ Confirmed Export from SignNow, then works on local projects and worktrees Google Antigravity docs ↗

SignNow's docs also name: ChatGPT.

Confirmed means both the tool's and the platform's official docs describe that route (links in the cell); IonBin has not tested every pairing. Not documented means it may work, but no official docs describe that route end to end. Checked Oct 17, 2026.

Agent compatibility

MCPAPI/CLIBulk import
LevelStatusDetail / source
Native connector / MCPYes Official docs ↗
API / CLIYes Official docs ↗
Browser-onlyNo Web app; also reachable programmatically
Bulk upload / importYes Bulk send on Business and higher plans (https://www.signnow.com/pricing)

Recorded Oct 17, 2026. Setup and plan limits vary; check the vendor's docs. How levels are assigned.

Works well with

Connects to agent platforms

Via its official MCP server, from MCP-capable platforms such as ChatGPT, Claude, Gemini (Google), Google Antigravity, OpenAI Codex.

Via its API, through automation hubs: Gumloop, Make, n8n, Zapier.

Workflows using this tool

Review

No long-form review yet. Verdict is based on research, not hands-on testing.

Alternatives

Docusign

E-signature and agreements

E-signature platform with templates, audit trails and bulk sending on higher plans. The Docusign MCP Server connects Claude, ChatGPT and other AI clients to tools such as sending envelopes, checking status and managing templates; available tools depend on your Docusign plan.

MCPAPI/CLIBulk import
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PandaDoc

Proposals and e-signature

Proposals, quotes, contracts and e-signature. Its MCP server lets AI tools read, create and update documents and templates, with separate global and EU servers that only see their own region's data.

MCPAPI/CLIBulk import
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