diff --git a/.changeset/fix-ingest-assignability.md b/.changeset/fix-ingest-assignability.md
new file mode 100644
index 0000000..eab87b3
--- /dev/null
+++ b/.changeset/fix-ingest-assignability.md
@@ -0,0 +1,5 @@
+---
+"@chkit/plugin-codegen": patch
+---
+
+Generate row types as type aliases instead of interfaces to satisfy TypeScript's Record<string, unknown> assignability requirement. Fixes TypeScript error TS2322 when passing typed row arrays to ingest functions.
diff --git a/packages/cli/src/plugin.test.ts b/packages/cli/src/plugin.test.ts
index c05cd70..9bb9e1f 100644
--- a/packages/cli/src/plugin.test.ts
+++ b/packages/cli/src/plugin.test.ts
@@ -659,7 +659,7 @@ describe('plugin runtime', () => {
       expect(payload.outFile).toBe(outFile)
 
       const content = await readFile(outFile, 'utf8')
-      expect(content).toContain('export interface AppUsersRow')
+      expect(content).toContain('export type AppUsersRow = {')
       expect(content.endsWith('\n')).toBe(true)
     } finally {
       await rm(fixture.dir, { recursive: true, force: true })
diff --git a/packages/plugin-codegen/src/generators.ts b/packages/plugin-codegen/src/generators.ts
index bf8f148..0c5fa3a 100644
--- a/packages/plugin-codegen/src/generators.ts
+++ b/packages/plugin-codegen/src/generators.ts
@@ -246,7 +246,7 @@ function renderTableInterface(
   interfaceName: string,
   options: Required<CodegenPluginOptions>
 ): { lines: string[]; findings: CodegenFinding[] } {
-  const lines: string[] = [`export interface ${interfaceName} {`]
+  const lines: string[] = [`export type ${interfaceName} = {`]
   const findings: CodegenFinding[] = []
   const zodFields: string[] = []
 
@@ -279,7 +279,7 @@ function renderViewInterface(
   const kind = definition.kind === 'view' ? 'view' : 'materialized_view'
   return {
     lines: [
-      `export interface ${interfaceName} {`,
+      `export type ${interfaceName} = {`,
       '  [key: string]: unknown',
       '}',
       '',
diff --git a/packages/plugin-codegen/src/index.test.ts b/packages/plugin-codegen/src/index.test.ts
index c93698e..4a5c314 100644
--- a/packages/plugin-codegen/src/index.test.ts
+++ b/packages/plugin-codegen/src/index.test.ts
@@ -272,7 +272,7 @@ describe('@chkit/plugin-codegen generation', () => {
     })
 
     expect(result.content).toBe(
-      `// This file is auto-generated by chkit codegen — do not edit manually.\n// chkit-codegen-version: 0.1.0\n\nexport interface AppUsersRow {\n  id: string\n  email: string\n  created_at: string\n}\n`
+      `// This file is auto-generated by chkit codegen — do not edit manually.\n// chkit-codegen-version: 0.1.0\n\nexport type AppUsersRow = {\n  id: string\n  email: string\n  created_at: string\n}\n`
     )
     expect(result.content.endsWith('\n')).toBe(true)
     expect(result.declarationCount).toBe(1)
@@ -364,7 +364,7 @@ describe('@chkit/plugin-codegen generation', () => {
     })
 
     expect(result.content).toBe(
-      `// This file is auto-generated by chkit codegen — do not edit manually.\n// chkit-codegen-version: 0.1.0\n\nimport { z } from 'zod'\n\nexport interface AppUsersRow {\n  id: string\n  email: string | null\n}\n\nexport const AppUsersRowSchema = z.object({\n  id: z.string(),\n  email: z.string().nullable(),\n})\n\nexport type AppUsersRowInput = z.input<typeof AppUsersRowSchema>\nexport type AppUsersRowOutput = z.output<typeof AppUsersRowSchema>\n`
+      `// This file is auto-generated by chkit codegen — do not edit manually.\n// chkit-codegen-version: 0.1.0\n\nimport { z } from 'zod'\n\nexport type AppUsersRow = {\n  id: string\n  email: string | null\n}\n\nexport const AppUsersRowSchema = z.object({\n  id: z.string(),\n  email: z.string().nullable(),\n})\n\nexport type AppUsersRowInput = z.input<typeof AppUsersRowSchema>\nexport type AppUsersRowOutput = z.output<typeof AppUsersRowSchema>\n`
     )
   })
 })