
Esper by Freysa
216 users
Version: 0.1.3
Updated: February 18, 2025

Available in the
Chrome Web Store
Chrome Web Store
Install & Try Now!

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Esper by Freysa bridges the trust gap between humans and AI agents by enabling users to contribute verifiable web information. Using advanced cryptography and secure hardware, users can create verifiable information that AI systems can rely on without compromising user privacy.
While this stack can be used for multiple applications such as contributing verified data to AI agents and proving credentials for access gating, an initial motivating scenario is proving personhood online. We present a simple social proof system using cross-platform verification, starting with four platforms as an example baseline:
- X Verified followers count
- Verify X subscription (pre GPT-4)
- Verify ChatGPT subscription
- Verify Reddit karma
As part of Freysa's mission to meaningfully interact with every human being on Earth, verified data and proof systems are fundamental to establishing genuine digital personhood.
Key Features:
1. Selective web content verification: Contribute specific information from private pages
2. Age/geography requirement attestation: Verify age/geography-related claims without exposing personally identifiable information (PII)
3. Private message authentication: Prove message receipt without sharing content
4. Timestamped content verification: Contribute proofs of when content was created or viewed
5. Fine-grained access control: Choose exactly what to verify for AI agent access
How It Works:
This extension operates seamlessly without interrupting your browsing experience:
1. Browse normally while the extension runs securely in the background.
2. The extension establishes a secure connection to the notary service on relevant webpages and captures the relevant data within a secure enclave.
3. The hardware enclave verifies the data and generates a cryptographic proof.
4. Users receive a verifiable attestation without exposing any sensitive information.
Privacy and Security:
- All processing occurs within a secure hardware enclave.
- User’s private data never leaves the enclave.
- All user data is securely deleted and zeroized immediately after cryptographic attestation.
- No storage of personal information
- Fine-grained control over attestations
Benefits:
- Enhanced AI trust: Contribute verifiable information that AI agents and systems can rely on
- Privacy protection: Generate proofs without exposing sensitive details
- Flexible verification: Support multiple types of attestations
- Secure processing: Protected handling of all sensitive data
- User control: Choose what information to contribute
Esper by Freysa enables secure contribution of verifiable information to AI agents. Install now to help build trust bridges between humans and AI agents, and it starts with Freysa.
While this stack can be used for multiple applications such as contributing verified data to AI agents and proving credentials for access gating, an initial motivating scenario is proving personhood online. We present a simple social proof system using cross-platform verification, starting with four platforms as an example baseline:
- X Verified followers count
- Verify X subscription (pre GPT-4)
- Verify ChatGPT subscription
- Verify Reddit karma
As part of Freysa's mission to meaningfully interact with every human being on Earth, verified data and proof systems are fundamental to establishing genuine digital personhood.
Key Features:
1. Selective web content verification: Contribute specific information from private pages
2. Age/geography requirement attestation: Verify age/geography-related claims without exposing personally identifiable information (PII)
3. Private message authentication: Prove message receipt without sharing content
4. Timestamped content verification: Contribute proofs of when content was created or viewed
5. Fine-grained access control: Choose exactly what to verify for AI agent access
How It Works:
This extension operates seamlessly without interrupting your browsing experience:
1. Browse normally while the extension runs securely in the background.
2. The extension establishes a secure connection to the notary service on relevant webpages and captures the relevant data within a secure enclave.
3. The hardware enclave verifies the data and generates a cryptographic proof.
4. Users receive a verifiable attestation without exposing any sensitive information.
Privacy and Security:
- All processing occurs within a secure hardware enclave.
- User’s private data never leaves the enclave.
- All user data is securely deleted and zeroized immediately after cryptographic attestation.
- No storage of personal information
- Fine-grained control over attestations
Benefits:
- Enhanced AI trust: Contribute verifiable information that AI agents and systems can rely on
- Privacy protection: Generate proofs without exposing sensitive details
- Flexible verification: Support multiple types of attestations
- Secure processing: Protected handling of all sensitive data
- User control: Choose what information to contribute
Esper by Freysa enables secure contribution of verifiable information to AI agents. Install now to help build trust bridges between humans and AI agents, and it starts with Freysa.
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