Build Health Check Endpoint Dependency Graph for System Observability

[temma02]

Description

Build a comprehensive health check endpoint that reports the health of all system dependencies as a structured dependency graph, enabling rapid diagnosis of which subsystem is degraded.

Requirements and Context

• Observability: Health check must report per-dependency status
• Testing: Test health aggregation logic
• Documentation: Document the health check schema

Suggested Execution

Branch: feat/issue-066-health-check-dependency-graph

Implement Changes

• Extend apps/backend/src/app/api/cron/health-check/route.ts to report per-dependency status
• Check database, Stellar network, Vercel API, and Stripe connectivity
• Return a structured graph with overall and per-dependency health
• Include response time metrics for each dependency check

Test and Commit

• Test the aggregation of per-dependency health into overall status
• Test partial-failure reporting
• Document the health check response schema

Example Commit Message

feat(health): build health check endpoint dependency graph

- Report per-dependency health for database, Stellar, Vercel, Stripe
- Return structured graph with overall and per-dependency status
- Include per-dependency response time metrics

Guidelines

• Use short timeouts for dependency checks to avoid slow responses
• Return 503 when critical dependencies are down
• Keep the health check itself lightweight

[job-soft]

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

I WOULD LOVE TO WORK ON THIS TASK ALONG SIDE YOU SIR.

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

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This issue has been completed by @job-soft as part of the Stellar Wave Program's 5th Wave 🥳

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