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Dick Hardt

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Dick Hardt is an identity-protocol designer and founder of Hellō. He edited the OAuth 2.0 authorization framework and now develops AAuth, a protocol for agents with their own cryptographic identities.[1][2][3][5]

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Dick Hardt

Links

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Founder and CEO · Hellō

Career

Delegated access for the web

OAuth 2.0 lets a service grant an application limited access to resources without giving that application the user’s password. Hardt is the editor of RFC6749, which defines authorization roles, flows and tokens. The framework became a basis for delegated web access. His public standards work also includes OAuth 2.1, OpenID extensions and mechanisms for email verification.[1][2]

Identity entrepreneurship

Hardt describes himself as founder and CEO of Hellō, with earlier founding roles at ActiveState, Sxip and Bubbler and previous work at Amazon and Microsoft. His current GitHub account concentrates on identity standards rather than a single application. The combination of product and protocol work makes his agent-auth proposals part of a longer effort to simplify delegated identity and access.[1]

Contributions

AAuth addresses agents that discover services and act across trust domains. Its design gives each agent a cryptographic identity and signs requests, rather than treating possession of a copied bearer token as sufficient authority. It separates the agent, the person represented by the agent, resources and authorization services. The repository includes protocol drafts, implementation links and an interoperability-demo profile. It remains evolving standards work.[3]

Ideas

Hardt uses a repeated payment to show why a permitted call may still be wrong. Authorization must account for purpose and prior actions.[4]

Tools, writing & talks

Tools

  • Start here

    AAuthgithub.com

    Protocol drafts and implementation resources for signed agent requests, person representation and resource authorization.

    Read the repository’s high-level roles and access modes before individual drafts. A basic understanding of HTTP requests and OAuth makes the cryptographic and delegation details easier to follow.

    Author and protocol designer[3]

Writing, research & talks

References

Latest source check 2026-10-30

  1. [1] GitHub: Dick Hardt

    github.com · Checked 2026-10-29

  2. [2] RFC6749: OAuth 2.0 Authorization Framework

    www.rfc-editor.org · Checked 2026-10-30

  3. [3] AAuth repository

    github.com · Checked 2026-10-29

  4. [4] AI Engineer: intent-based authorization panel

    ai.engineer · Checked 2026-10-29

  5. [5] Insecure Agents: AAuth with Dick Hardt

    www.insecureagents.com · Checked 2026-10-29

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