> ## Documentation Index
> Fetch the complete documentation index at: https://developers.respondent.io/llms.txt
> Use this file to discover all available pages before exploring further.

# NDAs

> Require participants to sign an NDA before applying

# How do NDAs work on Respondent?

When an NDA is added to a project the participant must first view the document and express their agreement or disagreements to the document before submitting their application to a study.

* Participants who do not agree to an NDA are still delivered as available screener responses, but ineligible for a "qualified" status. Read more about [project statuses](/docs/Projects/project-statuses).

<img src="https://mintcdn.com/respondentio/g4Qin-HcDj8FTCFT/images/docs/f86ea91-NDAs.png?fit=max&auto=format&n=g4Qin-HcDj8FTCFT&q=85&s=51e0fb1ff343b9e9429848516d7d4ab7" alt="" width="1078" height="408" data-path="images/docs/f86ea91-NDAs.png" />

## Self hosted NDAs

Self hosted NDAs allow for a URL to be passed to Respondent via the `ndaLink` field in project creation (POST: /v1/projects)

* This field is commonly made available for end user researchers to provide a link to their preferred document handler
* It can also be used to pass an internal link if you provide your own document hosting functionality, once the researcher uploads an NDA file to you, the corresponding public link can be made available via `ndaLink`.

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