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feat: add Stellar fee abstraction service#591

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greatest0fallt1me merged 1 commit into
CalloraOrg:mainfrom
emmyokolo2525-cyber:feat/fee-abstraction-service
Jun 29, 2026
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feat: add Stellar fee abstraction service#591
greatest0fallt1me merged 1 commit into
CalloraOrg:mainfrom
emmyokolo2525-cyber:feat/fee-abstraction-service

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@emmyokolo2525-cyber

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  • Add POST /api/billing/fee-abstraction/quote endpoint
  • Add POST /api/billing/fee-abstraction execution endpoint
  • Implement feeBumper service with FEE_BUMPER_SECRET_KEY signing
  • Add fee_abstraction.executed event to event emitter
  • Enforce per-developer rate limiting via billing router middleware
  • Add structured logging with correlation IDs
  • Add 27 unit/integration tests (27/27 passing)
  • Add docs/fee-abstraction.md documentation
  • Add OpenAPI schema entries for both endpoints
  • Fix pre-existing syntax error in webhook.types.ts

Closes #464

- Add POST /api/billing/fee-abstraction/quote endpoint
- Add POST /api/billing/fee-abstraction execution endpoint
- Implement feeBumper service with FEE_BUMPER_SECRET_KEY signing
- Add fee_abstraction.executed event to event emitter
- Enforce per-developer rate limiting via billing router middleware
- Add structured logging with correlation IDs
- Add 27 unit/integration tests (27/27 passing)
- Add docs/fee-abstraction.md documentation
- Add OpenAPI schema entries for both endpoints
- Fix pre-existing syntax error in webhook.types.ts

Closes CalloraOrg#464
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drips-wave Bot commented Jun 29, 2026

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@emmyokolo2525-cyber Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

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@greatest0fallt1me greatest0fallt1me merged commit 400d363 into CalloraOrg:main Jun 29, 2026
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Add a Stellar fee-abstraction service so developers can pay tx fees in app tokens

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