Proof of Delivery Disputes
Investigate and resolve proof-of-delivery disputes by collecting statements from both the consignee and driver, creating a documented record for resolution.
Why this matters
Keep freight moving with automated delivery confirmation, carrier check-ins, claims intake, and compliance data collection. This example shows you how to automate proof of delivery disputes calls end-to-end with Guava's SDK — no telephony plumbing, no prompt engineering, just Python.
Installation
Install from Guava's private PyPI index. A public package is coming soon — the install command will simplify to pip install guava.
# Step 1: Install Guava
pip install gridspace-guava --extra-index-url https://guava-pypi.gridspace.com
# Public PyPI package coming soon — the install command will simplify to:
# pip install guava
# Step 2: Set your credentials
export GUAVA_API_KEY="..."
export GUAVA_AGENT_NUMBER="..."How it's built
Every Guava agent is a Python class. Walk through the key sections below, then grab the complete file at the end.
Imports
Import the Guava SDK and any helpers you need. guava.CallController is the base class for every voice agent.
# Install: pip install gridspace-guava --extra-index-url https://guava-pypi.gridspace.com
import guava
import osAgent setup
set_persona() defines how the agent presents itself. set_task() gives it its mission in plain English. The checklist drives the conversation — Guava works through it top-to-bottom, collecting Field values and speaking Say items as it goes.
class PODDisputeBot(guava.CallController):
def __init__(self, contact_name: str, dispute_id: str, delivery_date: str,
shipment_description: str, contact_type: str):
super().__init__()
self.set_persona(
organization_name="Apex Logistics Resolution Center",
agent_name="Kim",
)
self.set_task(
objective=f"Investigate POD dispute {dispute_id} with {contact_name} ({contact_type})",
checklist=[
f"Introduce yourself to {contact_name} regarding dispute {dispute_id} for delivery on {delivery_date}.",
guava.Field(
key="received_shipment",
field_type="bool",
description=f"Did {contact_name} {'receive' if contact_type == 'consignee' else 'deliver'} the shipment?",
),
guava.Field(
key="delivery_location_confirmed",
field_type="text",
description="Exact location where delivery was made or claimed to be made",
),
guava.Field(
key="who_signed",
field_type="text",
description="Name and title of person who signed (or claims to have signed)",
required=False,
),
guava.Field(
key="cctv_available",
field_type="bool",
description="Is there security camera footage available at the delivery location?",
),
guava.Field(
key="statement_for_record",
field_type="text",
description="Official statement for the dispute record",
),
"Provide dispute case number and 5-7 business day resolution timeline.",
],
on_complete=lambda fields: print(f"POD dispute statement collected: {dispute_id} — {contact_type}"),
)
guava.dial(
controller=PODDisputeBot,
controller_args={"contact_name": "Receiving Manager, Westfield Distribution",
"dispute_id": "POD-2024-4421", "delivery_date": "November 12",
"shipment_description": "2 pallets of electronics components",
"contact_type": "consignee"},
to=os.environ["CONTACT_PHONE"],
agent_number=os.environ["GUAVA_AGENT_NUMBER"],
api_key=os.environ["GUAVA_API_KEY"],
)Platform performance
<1s
Response time
99.99%
Uptime SLA
13+
Industries served
Full example
The complete file — copy it, save it as example.py, and run it.
# Install: pip install gridspace-guava --extra-index-url https://guava-pypi.gridspace.com
import guava
import os
class PODDisputeBot(guava.CallController):
def __init__(self, contact_name: str, dispute_id: str, delivery_date: str,
shipment_description: str, contact_type: str):
super().__init__()
self.set_persona(
organization_name="Apex Logistics Resolution Center",
agent_name="Kim",
)
self.set_task(
objective=f"Investigate POD dispute {dispute_id} with {contact_name} ({contact_type})",
checklist=[
f"Introduce yourself to {contact_name} regarding dispute {dispute_id} for delivery on {delivery_date}.",
guava.Field(
key="received_shipment",
field_type="bool",
description=f"Did {contact_name} {'receive' if contact_type == 'consignee' else 'deliver'} the shipment?",
),
guava.Field(
key="delivery_location_confirmed",
field_type="text",
description="Exact location where delivery was made or claimed to be made",
),
guava.Field(
key="who_signed",
field_type="text",
description="Name and title of person who signed (or claims to have signed)",
required=False,
),
guava.Field(
key="cctv_available",
field_type="bool",
description="Is there security camera footage available at the delivery location?",
),
guava.Field(
key="statement_for_record",
field_type="text",
description="Official statement for the dispute record",
),
"Provide dispute case number and 5-7 business day resolution timeline.",
],
on_complete=lambda fields: print(f"POD dispute statement collected: {dispute_id} — {contact_type}"),
)
guava.dial(
controller=PODDisputeBot,
controller_args={"contact_name": "Receiving Manager, Westfield Distribution",
"dispute_id": "POD-2024-4421", "delivery_date": "November 12",
"shipment_description": "2 pallets of electronics components",
"contact_type": "consignee"},
to=os.environ["CONTACT_PHONE"],
agent_number=os.environ["GUAVA_AGENT_NUMBER"],
api_key=os.environ["GUAVA_API_KEY"],
)Run it
Start the agent. It will connect to Guava's infrastructure and begin accepting calls on your assigned number.
python example.py