DocuSign API
A real, well-documented API: OAuth 2.0, SDKs in six languages, webhooks, free dev sandbox. The catch is cost of access: production sits behind a go-live step and paid API plans with tight envelope quotas, from $600 per year for about 40 envelopes a month, with overages billed after the fact.
Frequently asked questions
DocuSign scores C+ on Supergood's API Report Card. A real, well-documented API: OAuth 2.0, SDKs in six languages, webhooks, free dev sandbox. The catch is cost of access: production sits behind a go-live step and paid API plans with tight envelope quotas, from $600 per year for about 40 envelopes a month, with overages billed after the fact.
DocuSign has an official API, but teams routinely hit its limits: gated access, partial coverage, or paid tiers. Most end up supplementing it with exports or an unofficial API layer like Supergood. Site terms may apply to any integration approach, and how they apply is a determination each team makes for itself.
DocuSign is the dominant electronic signature and agreement management vendor, founded in 2003 and headquartered in San Francisco (NASDAQ: DOCU). It serves approximately 1.7 million customers worldwide including 95% of Fortune 500 companies.
Primary vertical: misc (horizontal SaaS sold across nearly every industry). Closest Supergood sub-vertical: Contract Lifecycle Management, DocuSign's IAM positioning explicitly targets the full agreement lifecycle. A mortgage lender originating a loan generates closing documents in their LOS, pushes them to DocuSign via the eSignature REST API as an envelope with tabs (signature, initials, date, SSN), routes recipients in serial order (borrower → co-borrower → notary via DocuSign Notary), uses DocuSign Identify for ID verification, and listens to DocuSign Connect webhook events for envelope-sent / delivered / completed / declined / voided.
Very high. DocuSign holds roughly 67% market share in digital document management / eSigning per recent industry data and is the category-defining brand, 'docusigning' is used as a verb in many enterprise procurement and sales orgs.
DocuSign sits squarely on the revenue and compliance critical path for nearly every enterprise that uses it.
Founded in 2003. eSignature API has been continuously evolved; the current REST API is v2.1 with v2 still widely deployed by integrators.
Supergood's grades measure one thing: can a customer's engineering team get their own data out programmatically? Supergood checks six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and rolls them into a letter grade. Supergood re-verifies grades, and they only move on evidence.
DocuSign has partial MCP support. DocuSign references its own MCP server in an official sample repository, but no public documentation or registry listing for it was found. Several community MCP servers for DocuSign data and workflows are maintained on GitHub.
Partially. MCP support for DocuSign exists but is incomplete, so what MCP clients like Claude, Cursor, and Codex can reach depends on what the available server covers.