Specification
Describe endpoints, HTTP methods, request and response schemas, error codes, rate limits, pagination, and example payloads to prevent misinterpretation during development and include sample cURL commands and expected status codes.
A clear Business API Document reduces integration errors, clarifies legal responsibilities, and sets security and data handling expectations. It also helps manage change, reduce disputes, and support regulatory compliance under ESIGN, UETA, or state e-signature laws.
Engineering, product, legal, and IT security teams jointly use a Business API Document during integration planning and onboarding.
Smaller companies may combine roles; large enterprises typically formalize responsibilities across separate teams and contract owners.
Describe endpoints, HTTP methods, request and response schemas, error codes, rate limits, pagination, and example payloads to prevent misinterpretation during development and include sample cURL commands and expected status codes.
Specify supported authentication schemes (OAuth2, API keys, mutual TLS), token lifetimes, refresh flows, scopes, and best practices for secure credential storage and rotation, including examples for header formats.
Define per-client and per-endpoint throttling, burst allowances, 429 retry behavior, and recommendations for exponential backoff to maintain availability under load and include metrics for monitoring and alert thresholds.
Document versioning, deprecation timelines, backward compatibility commitments, required notice periods for breaking changes, and a rollback process to limit integration disruption, with examples and contact points for emergency fixes.
List encryption requirements in transit and at rest, input validation, OWASP considerations, logging standards, breach notification procedures, and applicable regulatory controls such as HIPAA or PCI DSS.
Include governing law, liability limits, indemnity clauses, data processing roles, confidentiality obligations, service levels, termination rights, and signatures or authorized signatory information, plus procedures for dispute resolution and amendments.
| Field | Configuration |
|---|---|
| Authentication Field | Require OAuth scope input and token expiration details. |
| Signer Roles | Define provider and consumer roles |
| Conditional Sections | Show fields only for partner integrations |
| Webhook Settings | Set callback URL and retry policy |
Indicate required integrations, accepted file types, and e-submission channels to ensure seamless execution and preservation of legally binding records.
Date obligations start; determines applicable law interpretation
Typical 10–30 business days for technical and legal review
Return signed agreement within agreed negotiation period
Minimum 90 days notice for breaking API changes
Retention measured from execution date or last effective change
Optica standardized its API agreement to remove ambiguity between provider and client teams, consolidating technical and legal terms into a single artifact.
Martin Properties adopted a standard API agreement to empower mobile field agents and remote closings while ensuring consistent security controls across transactions.
| signNow | DocuSign | Adobe Sign | PandaDoc | HelloSign | |
|---|---|---|---|---|---|
| Starting Price | $8/user/mo | $15/user/mo | $14/user/mo | $19/user/mo | $15/user/mo |
| Free Trial | Yes, 7-day free trial | Varies | Varies | Varies | Varies |
| Bulk Send | Yes | Yes | Yes | Yes | No |
| Audit Trail | Yes | Yes | Yes | Yes | Yes |
| HIPAA Compliant | Yes | Yes | Yes | No | No |