World Developer Docs

Example scenarios

Stop bots and duplicate accounts

Enforce one-person, one-action on rewards, referrals, voting, reviews, promotions, and social participation.Integrate Proof of Human

Require human presence when someone approves a payment, recovers an account, deploys software, or authorizes a high-risk transaction.Add Selfie Check

Confirm someone meets a policy without asking your product to store their full identity documents.Explore Identity Check

Distinguish people from agents, and make human approval an explicit boundary for consequential actions.Integrate AgentKit

Reduce impersonation, fake accounts, reputation manipulation, and fraudulent content while preserving privacy.Integrate Proof of Human

Where it fits in YC startups (based on Fall 2026 RFS guidelines)

If you’re building…	The simplest place to use World ID
Proving you’re human	Require one human per account to reduce Sybil attacks.
An AI consumer product	Protect a free trial, referral, reward, or limited promotion from duplicate claims.
Multiplayer AI	Distinguish verified people from AI agents in a shared environment.
An operating system for the physical world	Make sure tasks are assigned to real, unique workers.
A real-world data product	Limit data contribution and rewards to one unique contributor.
AI-native compliance	Add a privacy-preserving proof that a user is a real human before a regulated or high-risk action.
Crypto or stablecoins	Run fair allocations, grants, governance, airdrops, or incentives.
Cloud tools for small software	Reduce fake workspaces, spam, and abuse before privileged access.
Education	Protect scholarships, subsidized access, rewards, and student benefits.
Products for the aging population	Protect patients, family members, and caregivers from impersonation.
Self-maintaining APIs	Add human accountability before critical code changes, merges, or deployments.
Defense or physical infrastructure	Add a human trust signal to safety-critical operations.