---
id: drift/remove-schema-builder
name: Remove schemaBuilder.ts — replaced by Type.Module() per ADR-009
status: pending
depends_on: []
scope: single
risk: trivial
impact: component
level: implementation
---

## Description

The `SchemaBuilder` class in `src/graphs/schemaBuilder.ts` is the old fluent builder pattern for constructing graph type definitions. ADR-009 and the metagraph-module.md spec explicitly replace it with `Type.Module()` construction. The `SchemaBuilder` is unreleased API — it has no consumers outside this package.

Remove the file and its re-export from `src/graphs/mod.ts`.

## Acceptance Criteria

- [ ] `src/graphs/schemaBuilder.ts` is deleted
- [ ] `src/graphs/mod.ts` no longer exports from `schemaBuilder.ts`
- [ ] No remaining imports of `SchemaBuilder` anywhere in `src/` or `test/`
- [ ] `deno check mod.ts` passes

## References

- docs/architecture/metagraph-module.md — "SchemaBuilder removed; replaced by Type.Module() construction"
- docs/architecture/decisions/009-typebox-module-replaces-schemabuilder.md

## Notes

> To be filled by implementation agent

## Summary

> To be filled on completion