Implement content negotiation for API responses

[RUKAYAT-CODER]

Different response formats.

Acceptance Criteria:

• Accept header parsing
• JSON response
• CSV export for data
• Default to JSON

[Tobiloba0]

@Tobiloba0 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Boss, let me work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Tobiloba0 to this issue.

[Menjay7]

@Menjay7 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi! I’m a full-stack developer with a strong blockchain background. I’d love to handle this issue and can deliver a clean, reliable solution. Kindly assign it to me.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Menjay7 to this issue.

[drips-wave]

Congratulations, @Tobiloba0! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @Tobiloba0: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊