Build a Last-Mile Delivery Accessibility and Routing Dispatcher

Coordinate mock logistics providers across Beckn final-mile fulfillment contracts. Evaluate accessibility parameters such as staircase-only access and landmark-based routing for local couriers.

Logistics Dispatch Coordinator

Receive fulfillment search requests with customer physical access indicators and drop coordinates.

Query mock Beckn final-mile delivery providers for vehicle-type compatibility and serviceability.

Rank quotes against accessibility tags including ground-floor preference and vernacular voice navigation.

Dispatch simulated on_init and on_confirm fulfillment allocations.

Dispatch console displaying pending delivery routes, accessibility tags, and provider bid comparison panels.

Construct mock provider JSON files implementing Beckn final-mile delivery schema v0.8.2. Starter examples below are synthetic. They are not downloaded records.

Beckn protocol specifications Leverages Beckn final-mile delivery specification concepts for fulfillment routing and message context.

langgraph, fastapi, httpx. Manages asynchronous state transitions between search, quote, and confirm fulfillment stages. Fast reasoning API or local model capable of multi-step criteria filtering.

Submit runnable source, pinned dependencies, setup commands, a working interface, example outputs, and a recorded end-to-end demo. Include tests and an action log.

Evaluates provider capability against specific delivery accessibility constraints.

Emits valid Beckn fulfillment context and transaction headers.

Simulates asynchronous callback handling with mock ACK and on_search cycles.

Generates actionable delivery manifests containing localized landmark instructions.

```json [ { "input": { "order_id": "ORD-5541", "drop_location": { "lat": 12.9716, "lng": 77.5946, "accessibility_notes": "Wheelchair accessible ramp at gate 2" }, "package": { "weight_kg": 2.5, "perishable": false } }, "expected_output": { "selected_provider": "BPP-LOG-01", "fulfillment_id": "FUL-9901", "vehicle_type": "TWO_WHEELER", "allocated_instructions": "Enter via Gate 2 ramp; leave at reception counter.", "status": "DISPATCH_CONFIRMED" } }, { "input": { "order_id": "ORD-5542", "drop_location": { "lat": 12.975, "lng": 77.599, "accessibility_notes": "Floor 4, no elevator, heavy cargo" }, "package": { "weight_kg": 35, "perishable": false } }, "expected_output": { "selected_provider": null, "fulfillment_id": null, "status": "UNSERVICEABLE_CAPACITY_LIMIT", "error_reason": "Cargo exceeds two-person carry limit for non-elevator delivery" } } ] ```

Operates entirely within mock delivery networks; coordinates simulated vehicle dispatches without live GPS tracking. Use mock external writes. Require human review before any real deployment.