> You are reading the Docusign Developer Documentation. For clean Markdown of any page, append .md to the page URL.
>
> Documentation indexes by section:
> - APIs and SDKs: https://docusign.docs.buildwithfern.com/docs/llms.txt
> - Platform 101: https://docusign.docs.buildwithfern.com/platform/llms.txt
> - Extension Apps: https://docusign.docs.buildwithfern.com/extension-apps/llms.txt
> - Docusign CLI: https://docusign.docs.buildwithfern.com/docusign-cli/llms.txt
>
> Authentication (OAuth, JWT Grant, M2M): https://docusign.docs.buildwithfern.com/platform/auth
> Webhooks and Connect: https://docusign.docs.buildwithfern.com/platform/webhooks
>
> OpenAPI specifications: https://docusign.docs.buildwithfern.com/openapi.json
> MCP server: https://docusign.docs.buildwithfern.com/_mcp/server

# Docusign Security Requirements and API Call Limits

## Docusign security requirements and API call limits

To ensure our customers continue to trust Docusign for the fastest, easiest, and most secure way to get a signature, we have put safeguards in place to protect our multi-tenant data centers.

The two safeguards that Docusign uses are:

* [Integration Keys](/docs/esign-soap-api/esign101/security/integration-keys)
* [API Call Limits](/docs/esign-soap-api/esign101/security/call-limits)

## Docs

- [Integration Keys](https://developers.docusign.com/docs/esign-soap-api/esign101/security/integration-keys.md)
- [API call limits](https://developers.docusign.com/docs/esign-soap-api/esign101/security/call-limits.md)