Build a comprehensive schema validation and serialization framework

[Lakes41]

Difficulty: Expert
Type: Architecture

Background

The SDK exchanges structured data with GuildPass services through numerous request and response models. As the API surface grows, maintaining consistent serialization, validation, and backwards compatibility becomes increasingly challenging.

A centralized schema framework would improve reliability while reducing duplicated validation logic.

Problem

Request validation and serialization responsibilities may become fragmented across the SDK, increasing maintenance costs and making API evolution more error-prone.

Expected outcome

Introduce a unified serialization and validation layer responsible for transforming SDK models into API payloads and validating responses before they reach consumers.

Suggested implementation

1. Audit existing request and response models.
2. Introduce centralized schema definitions for public SDK types.
3. Validate outgoing requests before transmission.
4. Validate and normalize incoming responses.
5. Provide detailed validation errors for malformed payloads.
6. Document serialization behavior for SDK contributors.

Acceptance criteria

• Request payloads are validated before transmission.
• Responses are validated before being exposed to consumers.
• Validation errors provide actionable diagnostics.
• Existing public APIs remain backwards compatible.
• Unit tests verify serialization and validation behavior.

Likely affected files/directories

src/types/, src/serialization/, src/client/, src/utils/, docs/

[AndreyDelgado]

Hi! I'd like to work on this issue. I have experience designing serialization/validation layers for SDKs, including schema-based request/response validation and clear error diagnostics for malformed payloads.

Plan: audit the existing request/response models, introduce centralized schema definitions for public SDK types, validate outgoing requests before transmission and incoming responses before they reach consumers, and add unit tests covering serialization and validation behavior while keeping the public API backwards compatible.

[Emmanuellsensai]

I'd like to take this issue on.

Plan:

• Audit the current request/response models under src/types/ and note where validation and serialization logic already exists (likely scattered in src/client/ and src/utils/), so the new layer replaces duplication instead of adding another path.
• Propose a schema format for src/serialization/ (need to confirm if there's a preferred library or if this should be dependency-free) and define schemas for the public SDK types first.
• Wire schema validation into the request path before transmission and into the response path before data reaches consumers, keeping existing public method signatures unchanged for backwards compatibility.
• Add structured validation error types with field-level detail, plus unit tests covering valid and malformed payloads.
• Document the serialization/validation flow in docs/ for contributors.

Given the scope, I'd want to confirm the schema approach with a maintainer before writing code.

I'll wait for assignment before opening a PR.

[grantfox-oss]

🦊 GrantFox — @AndreyDelgado has been assigned to this issue as part of the Official Campaign | FWC26 campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #359)
2. Your PR will be reviewed by the Adamantine-guild maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign | FWC26 campaign!

@AndreyDelgado's PR #405 was approved and merged by @Lakes41.

🏆 @AndreyDelgado: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (134 total points). Track your full progress on GrantFox.

👏 Great work, @AndreyDelgado! Keep contributing to Adamantine-guild.