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Protect your project from bots and bad actors

Gitcoin Passport's API makes it easy to prevent Sybil attacks.

Sybil defense with just a few lines of code.

It’s really easy to get started.

Easy Integration

Integrate the Passport API into your application with just a few lines of code.

Gitcoin-Grade Protection

With our default Unique Humanity Scorer, you inherit years of institutional experience in safeguarding the Gitcoin Grants program.

Customizable Defense

If you want to reward certain users for having specific credential, you can create your own Scorer. Verify users with a combination of credentials that work best for your needs.

Who we are

The #1 Sybil resistance solution for web3 projects and communities.

Passport is a flexible, easy-to-use developer toolkit for protecting projects against bots and bad actors. It helps users build robust online reputations and enables project leaders to create trustworthy digital experiences that keep out bots and Sybil attackers.

The Unique Humanity Score

We don't believe in one-size-fits-all solutions for proving your Unique Humanity. So we give users the choice to prove their identity.Users can choose to add credentials from BrightID, Civic, Gitcoin, Coinbase, and more to increase their Unique Humanity Score.

Multiple Scoring Algorithms

Our built-in credentials scorer and battle-tested default score makes Sybil defense easy and effective. But if you don’t want to opt for Gitcoin's battle-tested defaults, and want to design your own trustworthiness scoring algorithm, you can choose to create a Scorer that meets your unique requirements.

Onchain & Offchain Identity verification

Our Developer API evaluates people’s unique humanity offchain, but if you want to bake in scoring into a smart contract, you can choose to do that. That’s why we now enable our Passport holders to push their stamps onchain.

Have a Passport & looking for help?

Platforms Already Integrating Passport

These community engagement platforms have integrated Gitcoin Passport so protecting rewards for your community from bots and Sybils can be done in just a few clicks:


Protect your Guild from bots and Sybils


Protect your incentive campaigns from bots and Sybils


Protect your governance votes from bots and Sybils.


Proof of Humanity and other proof-of-personhood systems let users prove that they are unique humans, which is useful in many applications including airdrops and governance. Each of these applications are useful individually. But what makes them truly powerful is how well they compose with each other. The network effects of these different services [through a meta-aggregator like Passport] combine to create an ecosystem that provides some very powerful options for users and applications. An Ethereum-based Twitter alternative (eg. Farcaster) could use POAPs and other proofs of on-chain activity to create a "verification" feature that does not require conventional KYC, allowing anons to participate.

Such platforms could create rooms that are gated to members of a particular community - or hybrid approaches where only community members can speak but anyone can listen.


Protect your project