# Scynchro API

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Althaf Hilmi](https://cerebralvalley.ai/u/Mualli)
- **GitHub:** https://github.com/Althaf2406/synchro-api
- **Demo video:** https://youtu.be/R65yfQwvQPk
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2525

SynchroAPI is an autonomous, self-healing cross-repository CI/CD remediation orchestrator that eliminates production microservice outages caused by breaking upstream OpenAPI contract changes.
In modern microservice architectures, a single upstream API Pull Request (such as replacing flat integer fields with nested DTO objects, adding mandatory idempotency keys, or narrowing status enums) silently breaks downstream consumer repositories at runtime. Existing keyword/regex tools miss semantic schema shifts, while single-prompt LLM coding agents hallucinate cross-file imports or leave subtle logic regressions.

SynchroAPI solves this end-to-end through a 5-stage self-validating pipeline:
1. Deterministic Contract Diffing (`oasdiff`): Runs inside an isolated container to extract exact breaking OpenAPI rules (`REMOVED`, `REQUIRED_ADDED`, `ENUM_NARROWED`) with zero false positives.
2. Hybrid Tree-sitter AST GraphRAG: Parses downstream Python repositories into a directed NetworkX AST property graph, extracting 1st-, 2nd-, and 3rd-hop callers and sorting them in strict topological dependency order (`DTOs -> Business Functions -> Unit Tests`).
3. Architectural Migration Planning (`Meta Muse Spark Open 70B` on Baseten): Synthesizes a cross-repository `RepoMigrationPlan` respecting topological execution order.
4. Surgical Multi-File Code Synthesis (`Meta Muse Code 34B` on Fireworks AI): Uses speculative decoding and prompt caching to generate exact file patches across downstream repositories.
5. Ephemeral Sandbox Verification & Self-Healing Loop (`Modal` + `mypy` + `pytest` + `Muse Spark Critic`): Executes static type checks and unit tests inside an isolated sandbox. When an initial patch fails (e.g., Iteration 1 leaving a deprecated `'CHARGED'` status check on line 25), the Semantic Critic Agent rejects the patch and feeds line-level diagnostic tracebacks back to Muse Code, which autonomously self-heals on Iteration 2 (1.00 behavioral purity score) before opening verified Pull Requests.

## More from Meta Global AI Developer Hackathon

- [OmniDirector AI](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2522)
- [Heptapod](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2523)
- [Fugees](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2524)
- [PocketLLM](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2526)
- [VibeFlow Inspector AI](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2527)
- [Gtools](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2528)

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