Embed a panel of 4.3M+ research participants into your research platform.
Your technology plus our real people: that's the future of research.
Integrations & partners
Research platforms built on the Respondent panel.
When 4.3M+ verified participants live inside your product, your customers recruit, screen, schedule, and pay without ever leaving - and your software does far more than it could on its own.
Spotlight: three founders building on the API
The feedback from customers has been awesome. Our customers love being able to recruit their customers and non-customers as part of the same study.
Ned DwyerCo-Founder & CEO · Great Question - 60+platforms live
The Respondent API is one of our best recent investments. Our customers now have access to a global panel of survey participants - and they're happy about its speed and depth.
Anshul DivakarCo-Founder & CEO · GetCurious Your API is the most robust. The B2B pool is much broader. For any company trying to create a participant integration, Respondent is cream of the crop.
Brian ByunFounder · Hubble - 4.3M+verified participants
The quality of Respondent participants is generally much higher. I expect a very low no-show rate, and I know they are who they say they are.
What you get
Our panel will be your fastest-ever feature build.
Add our panel to your platform in as little as two weeks - connect endpoints in staging, build the screens, connect billing, and push live. We stay focused on panel building; you stay focused on the research experience.
01 / Quality
Quality participants, no compromises.
Real people, real fast. We own the relationship with every panelist - work-email verified, LinkedIn matched, ID-checked. Your customers get verified participants, not aggregated quant panels.
- 4.3M+ verified participants
- <1% fraud rate (industry: 8–22%)
- B2B, B2C, healthcare, niche roles
Karen H.VerifyingPhoneWork emailIdentityLinkedIn
Dev P.VerifyingIP and VPNDuplicate check02 / Whitelabel
Your brand on the surface.
One of the only panels comfortable being invisible. Embed recruitment, screeners, scheduling, and payouts under your own UI. Your customers stay in your product end-to-end.
- Screeners in your own UI
- Pass-through scheduling
- Programmatic incentive payouts
Screener question 2Rewrite with AIHow often do you do research?
Every weekNot setEvery monthNot setNeverNot setMatching participants64
03 / Partnership
We don’t compete with you.
Like AWS for servers, we want to be the participant layer underneath the research industry. We’re 100% focused on panel building - no interest in shipping research tooling that competes with our partners.
- Wholesale recruit-fee rates
- Dedicated partner manager
- Co-marketing if you want it
IntegrationsDirect integrationsSSurveyMonkeySend participants to your surveyConnectLLookbackTrack sessions and recordingsConnectZZoomSchedule conversationsConnectGCGoogle CalendarParticipants pick their timesConnectZoom details sent to participants automatically
Core endpoints
Seven endpoints. One recruitment workflow.
Projects, screeners, responses, invites, payouts, webhooks.
{
"event": "SCREENER_RESPONSES.CREATED",
"uuid": "006a4577-43d6-448a-a3d6-1a63581ca217",
"created": "2026-01-08T23:09:08.239Z",
"payload": {
"resource": {
"id": "69603913cd7d6158385a1ff7",
"projectId": "69603913cd7d6158385a1ff6",
"type": "screener-responses"
}
}
}| Method | Path | Summary |
|---|---|---|
| /v1/projects | POST | Create a project |
| /v1/projects/:id/publish | PATCH | Publish a project |
| /v1/projects/:id/screener-responses | GET | List responses |
| /v1/projects/:id/screener-responses/:id/qualify | PATCH | Qualify a participant |
| /v1/projects/:id/screener-responses/:id/invite | PATCH | Invite a participant |
| /v1/projects/:id/screener-responses/:id/payouts | POST | Pay a participant |
| /v1/webhooks | POST | Subscribe to events |
Events
Seven webhook events for the full lifecycle.
One URL per team receives every event. Payloads are signed, each delivery has a uuid, and failed calls retry up to five times.
PROJECTS.UPDATED
. A project's recruitingStatus changed.
CONVERSATIONS.CREATED
. A new conversation was created.
SCREENER_RESPONSES.CREATED
. A participant submitted a new screener response.
QUOTAS.SEGMENT_FILLED
. A quota segment, or a group's No match bucket, reached its min, max or exact target.
SCREENER_RESPONSES.UPDATED
. A response was paid, cancelled, or its visibility changed.
QUOTAS.FILLED
. Every targeted bucket of a project's quota reached its target.
MESSAGES.CREATED
. A participant sent a new message.
Integration flow
How the API fits your customer workflow.
Same four-step lifecycle the dashboard runs. Your UI wraps it; we handle the panel underneath.
How finance teams close the month
Incentive$125LaunchHow often do you do research?
Jade W.ModeratorKaren H.WaitingMartin G.WaitingNick R.WaitingReminder sent
Nick R. was reminded about the session.
$130
Paid through Tremendous, the way every study payment is.
Safeguards
Boring on purpose. Where it matters.
| Safeguard | What it does |
|---|---|
Audit logs | Internal audit trail. We record administrative actions so we can trace who changed what. |
Rate limits | 250 req / sec in production. 500 burst, 1M requests/day. Staging is 50 RPS, 100 burst, 200k/day. |
Compliance | SOC 2 Type II · GDPR · CCPA. The same controls that cover the rest of the platform cover the API. |
Webhooks | HMAC-SHA256 signing. Respond 2xx within 3 seconds or we retry up to 5 times at 10-minute intervals. |
The API inherits Respondent's security and compliance posture — the same SOC 2, GDPR, and CCPA controls, and the same payment rails. It's another front door to the panel you already trust.
FAQ
API questions, answered clearly.
Everything product and platform teams ask before they launch a participant integration.
Who is the Respondent API for?
Research platforms, survey tools, AI research products, and workflow software whose customers need verified participants without leaving the experience you already own.
How does pricing work for partners?
Partners pay a recruit fee for each completed participant session, plus the incentive balance used to pay participants. Wholesale partner rates are based on volume and methodology.
Who handles participant payouts?
Respondent does. We own the participant relationship and run payouts on our existing payment infrastructure, so your team avoids the operational and compliance overhead of moving money directly.
How quickly can a team ship the integration?
Teams have launched in as little as two weeks. Most integrations connect the core endpoints in staging, build the customer-facing workflow, then go live once billing and payout paths are wired up.
Can we keep the experience fully whitelabeled?
Yes. Recruitment, screeners, scheduling, and payouts can live inside your product so your customers stay in your brand from study setup through completion.
How do your participants compare to aggregator panels?
We own the relationship with our panelists and verify them directly, which gives partners stronger B2B depth, better show rates, and participants who can handle interviews, diaries, and long-form studies instead of just survey clickthroughs.
Where can we recruit from?
Respondent supports recruiting in 150+ countries, with especially strong coverage in the US, UK, Canada, Australia, Germany, and France, plus deep North American B2B coverage for hard-to-reach professional roles.
