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docs: create a sample for authentication feature#211

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guglielmo-san merged 17 commits into
a2aproject:mainfrom
guglielmo-san:authentication_sample
Dec 1, 2025
Merged

docs: create a sample for authentication feature#211
guglielmo-san merged 17 commits into
a2aproject:mainfrom
guglielmo-san:authentication_sample

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@guglielmo-san

@guglielmo-san guglielmo-san commented Nov 27, 2025

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Description

This PR introduces a sample for the authentication feature.

Re #195

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Summary of Changes

Hello @guglielmo-san, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request adds a comprehensive sample for implementing authentication within an agent. It provides a practical example of how to secure agent interactions using Bearer Tokens, detailing the necessary middleware, user object construction, and agent execution logic to handle authenticated requests. The goal is to offer a clear blueprint for developers looking to integrate authentication into their agent-based applications.

Highlights

  • New Authentication Sample: Introduces a new sample demonstrating Bearer Token authentication within an agent configuration.
  • Authentication Flow: The sample illustrates how to intercept requests, validate tokens, extract user information, and pass it to the request context.
  • Key Components: Includes dedicated files for the agent executor, authentication middleware (using Passport.js and JWT), and a custom user builder.
  • Testing Instructions: Provides clear instructions on how to run and test the authentication agent, including cURL commands and expected JSON responses for both successful and failed authentication.
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Code Review

This pull request introduces a valuable sample for implementing authentication in an agent. The code is generally well-structured, but I've identified a few issues that should be addressed. There are some typos in the README and in a user-facing message. More importantly, there's a critical security issue with a hardcoded secret in the authentication middleware, which should be loaded from an environment variable even in a sample to promote best practices. Additionally, I found a critical bug in the user_builder.ts file where it could fail to return a user object, leading to a runtime error. I've provided suggestions for all these points.

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/gemini review

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Code Review

This pull request introduces a valuable sample for implementing authentication. The overall structure is good, but there are some important issues to address. Most critically, a hardcoded secret key in the authentication middleware poses a significant security risk and should be replaced with an environment variable. Additionally, there are several minor typos in the documentation and code that should be corrected for clarity, and an empty author field in package.json that can be removed.

Comment thread src/samples/authentication/authentication_middleware.ts
Comment thread src/samples/authentication/README.md Outdated
Comment thread src/samples/authentication/README.md Outdated
Comment thread src/samples/authentication/README.md Outdated
Comment thread src/samples/authentication/agent_executor.ts Outdated
guglielmo-san and others added 6 commits November 27, 2025 14:05
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Comment thread src/samples/authentication/index.ts Outdated
Comment thread src/samples/authentication/user_builder.ts
Comment thread src/samples/authentication/agent_executor.ts
@ishymko ishymko changed the title feat: create a sample for authentication feature docs: create a sample for authentication feature Nov 28, 2025
@guglielmo-san guglielmo-san enabled auto-merge (squash) December 1, 2025 15:08
@guglielmo-san guglielmo-san merged commit cc9d223 into a2aproject:main Dec 1, 2025
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@guglielmo-san guglielmo-san deleted the authentication_sample branch December 1, 2025 15:09
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2 participants