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zSign

Sends, tracks and collects signatures on PDF documents through a REST API, with a tamper-evident audit trail and hashed documents.

From $27 once

DocumentsFor developersUsage-based pricing
zsign.io ↗
Open zsign.ioAlternativesSet it up for my teamIs zSign yours? Claim the card →
At a glanceswept Oct 22, 2026

not read yet

Use

For
Developers and AI agents who need e-signatures sent through an API without seat fees.
Price
From $27 oncepricing page, read Oct 24, 2026
Runs as
API
Used for
  • Send a document for signature with one API call
  • Check envelope status and download signed PDFs
  • Top up signing credits from a CI pipeline
read off zsign.io on Oct 24, 2026
Worth knowingcomputed from what we read · each with its source
  • Has an MCP server (1 in the registry)public registry →
  • Publishes llms.txt, a file written for AI assistantszsign.io ↗
Pricingpricing page, read Oct 24, 2026

From $27 once

pricing page

Your datawhat they publish, each line with its page · read Oct 24, 2026

These are zSign's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read Oct 24, 2026

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Documentsby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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beta

Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

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Questions this page answers
  • What is zSign?

    Sends, tracks and collects signatures on PDF documents through a REST API, with a tamper-evident audit trail and hashed documents. It is listed in the Atlas under Documents.

  • Who is zSign for?

    Developers and AI agents who need e-signatures sent through an API without seat fees.

  • How much does zSign cost?

    Paid plans start at $27 once, per zSign's pricing page on 2026-10-24.

  • Is zSign free?

    No. Its pricing page showed no free plan on 2026-10-24.

  • Do people use zSign?

    Little sign of use.

  • What are alternatives to zSign?

    In Documents, by use: Docusign, Foxit PDF Services (MCP), Portant, PostalForm, Nutrient, Corenexis.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk