Feature: indexer GraphQL API alongside REST for flexible claim queries

[Psalmuel01]

The indexer exposes fixed REST endpoints. Integrators querying claims by combinations (wallet + type + issuer + active) need flexible filtering.

Scope

• Add a GraphQL endpoint over the existing claims store supporting filtering by wallet, credential_type, issuer, active/revoked, and time range, with pagination.
• Keep REST for simple cases; share the same DB layer.
• Document the schema and add query tests.

Value

Gives integrators expressive, typed queries without new REST endpoints per use case.

Acceptance

• A GraphQL endpoint answers filtered, paginated claim queries against the indexed data, with a documented schema and tests.

[Malcolm-Wander]

@Malcolm-Wander has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hello maintainer,I’d love to work on this issue please,I promise to do a good and swift job..thank you.

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

[Emoji-dot]

@Emoji-dot has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

I would like to work on this issue

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

[Ade-Pheebs]

@Ade-Pheebs has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

hello maintainer please can i take on this issue? I would be sure to implement changes as described. Thank you.

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

[drips-wave]

Congratulations, @Malcolm-Wander! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @Malcolm-Wander: 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.

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