diff --git a/src/app/api/growth/route.ts b/src/app/api/growth/route.ts
new file mode 100644
index 0000000..bf1496b
--- /dev/null
+++ b/src/app/api/growth/route.ts
@@ -0,0 +1,54 @@
+import { NextResponse } from "next/server";
+import { sql } from "@/db";
+
+interface GrowthEntry {
+  childId: string;
+  measuredAt: string;
+  weightKg?: number;
+  heightCm?: number;
+  headCircumferenceCm?: number;
+  notes?: string;
+}
+
+export async function POST(request: Request) {
+  try {
+    const body: GrowthEntry = await request.json();
+    const { childId, measuredAt, weightKg, heightCm, headCircumferenceCm, notes } = body;
+
+    if (!childId || !measuredAt) {
+      return NextResponse.json({ error: "Missing required fields" }, { status: 400 });
+    }
+
+    await sql.unsafe(
+      `INSERT INTO growth (child_id, measured_at, weight_kg, height_cm, head_circumference_cm, notes)
+       VALUES ($1, $2, $3, $4, $5, $6)`,
+      [childId, new Date(measuredAt), weightKg || null, heightCm || null, headCircumferenceCm || null, notes || null]
+    );
+
+    return NextResponse.json({ success: true });
+  } catch (error) {
+    console.error(error);
+    return NextResponse.json({ error: String(error) }, { status: 500 });
+  }
+}
+
+export async function GET(request: Request) {
+  const { searchParams } = new URL(request.url);
+  const childId = searchParams.get("childId");
+
+  if (!childId) {
+    return NextResponse.json({ error: "childId required" }, { status: 400 });
+  }
+
+  try {
+    const growth = await sql.unsafe(
+      `SELECT * FROM growth WHERE child_id = $1 ORDER BY measured_at DESC`,
+      [childId]
+    );
+
+    return NextResponse.json({ growth });
+  } catch (error) {
+    console.error(error);
+    return NextResponse.json({ error: String(error) }, { status: 500 });
+  }
+}
\ No newline at end of file
diff --git a/src/app/api/logs/route.ts b/src/app/api/logs/route.ts
new file mode 100644
index 0000000..0b1b61e
--- /dev/null
+++ b/src/app/api/logs/route.ts
@@ -0,0 +1,89 @@
+import { NextResponse } from "next/server";
+import { sql } from "@/db";
+
+interface LogEntry {
+  type: "feed" | "diaper" | "sleep";
+  childId: string;
+  subType: string;
+  amountMl?: number;
+  notes?: string;
+  startedAt?: string;
+  endedAt?: string;
+}
+
+export async function POST(request: Request) {
+  try {
+    const body: LogEntry = await request.json();
+    const { type, childId, subType, amountMl, notes, startedAt, endedAt } = body;
+
+    if (!type || !childId || !subType) {
+      return NextResponse.json({ error: "Missing required fields" }, { status: 400 });
+    }
+
+    const now = new Date();
+
+    if (type === "feed") {
+      await sql.unsafe(
+        `INSERT INTO feeds (child_id, type, method, amount_ml, notes, logged_at) VALUES ($1, $2, $3, $4, $5, $6)`,
+        [childId, subType, subType.includes("breast") ? subType : "bottle", amountMl || null, notes || null, now]
+      );
+    } else if (type === "diaper") {
+      await sql.unsafe(
+        `INSERT INTO diapers_logs (child_id, type, notes, logged_at) VALUES ($1, $2, $3, $4)`,
+        [childId, subType, notes || null, now]
+      );
+    } else if (type === "sleep") {
+      const startTime = startedAt ? new Date(startedAt) : now;
+      const endTime = endedAt ? new Date(endedAt) : null;
+      const durationMinutes = endTime
+        ? Math.round((endTime.getTime() - startTime.getTime()) / 60000)
+        : null;
+
+      await sql.unsafe(
+        `INSERT INTO sleeps (child_id, type, started_at, ended_at, duration_minutes, notes, logged_at) VALUES ($1, $2, $3, $4, $5, $6, $7)`,
+        [childId, subType, startTime, endTime, durationMinutes, notes || null, now]
+      );
+    }
+
+    return NextResponse.json({ success: true });
+  } catch (error) {
+    console.error(error);
+    return NextResponse.json({ error: String(error) }, { status: 500 });
+  }
+}
+
+export async function GET(request: Request) {
+  const { searchParams } = new URL(request.url);
+  const childId = searchParams.get("childId");
+  const type = searchParams.get("type");
+  const limit = parseInt(searchParams.get("limit") || "20");
+
+  if (!childId || !type) {
+    return NextResponse.json({ error: "childId and type required" }, { status: 400 });
+  }
+
+  try {
+    let results: any[] = [];
+    if (type === "feed") {
+      results = await sql.unsafe(
+        `SELECT * FROM feeds WHERE child_id = $1 ORDER BY logged_at DESC LIMIT $2`,
+        [childId, limit]
+      );
+    } else if (type === "diaper") {
+      results = await sql.unsafe(
+        `SELECT * FROM diapers_logs WHERE child_id = $1 ORDER BY logged_at DESC LIMIT $2`,
+        [childId, limit]
+      );
+    } else if (type === "sleep") {
+      results = await sql.unsafe(
+        `SELECT * FROM sleeps WHERE child_id = $1 ORDER BY logged_at DESC LIMIT $2`,
+        [childId, limit]
+      );
+    }
+
+    return NextResponse.json({ entries: results || [] });
+  } catch (error) {
+    console.error(error);
+    return NextResponse.json({ error: String(error) }, { status: 500 });
+  }
+}
\ No newline at end of file
diff --git a/src/app/api/vaccinations/route.ts b/src/app/api/vaccinations/route.ts
new file mode 100644
index 0000000..095f2ec
--- /dev/null
+++ b/src/app/api/vaccinations/route.ts
@@ -0,0 +1,56 @@
+import { NextResponse } from "next/server";
+import { sql } from "@/db";
+
+interface VaccinationEntry {
+  childId: string;
+  vaccineName: string;
+  scheduledDate: string;
+  givenDate?: string;
+  status?: "pending" | "given" | "skipped" | "delayed";
+  provider?: string;
+  lotNumber?: string;
+  notes?: string;
+}
+
+export async function POST(request: Request) {
+  try {
+    const body: VaccinationEntry = await request.json();
+    const { childId, vaccineName, scheduledDate, givenDate, status, provider, lotNumber, notes } = body;
+
+    if (!childId || !vaccineName || !scheduledDate) {
+      return NextResponse.json({ error: "Missing required fields" }, { status: 400 });
+    }
+
+    await sql.unsafe(
+      `INSERT INTO vaccinations (child_id, vaccine_name, scheduled_date, given_date, status, provider, lot_number, notes)
+       VALUES ($1, $2, $3, $4, $5, $6, $7, $8)`,
+      [childId, vaccineName, scheduledDate, givenDate || null, status || "pending", provider || null, lotNumber || null, notes || null]
+    );
+
+    return NextResponse.json({ success: true });
+  } catch (error) {
+    console.error(error);
+    return NextResponse.json({ error: String(error) }, { status: 500 });
+  }
+}
+
+export async function GET(request: Request) {
+  const { searchParams } = new URL(request.url);
+  const childId = searchParams.get("childId");
+
+  if (!childId) {
+    return NextResponse.json({ error: "childId required" }, { status: 400 });
+  }
+
+  try {
+    const vaccinations = await sql.unsafe(
+      `SELECT * FROM vaccinations WHERE child_id = $1 ORDER BY scheduled_date ASC`,
+      [childId]
+    );
+
+    return NextResponse.json({ vaccinations });
+  } catch (error) {
+    console.error(error);
+    return NextResponse.json({ error: String(error) }, { status: 500 });
+  }
+}
\ No newline at end of file