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Shift Filler — Field service · AgentShelf

HAAS-0133Field serviceUnverified

Shift Filler

Name: Shift Filler
Brand: Halvorsen Automation
SKU: AS-0133
Availability: InStock
Rating: 4.6 (129 reviews)

Texts qualified on-call staff the moment a shift opens, first yes wins, schedule updates itself.

4.6(129)·52,300 runs logged·Halvorsen Automation

Free because the builder wanted the reference customers. Callouts get filled in minutes instead of an hour of phone tag, and nobody gets texted for a shift they are not certified for.

Spec sheet

ModelLlama 3.3 70B

Runs onn8n

Avg cost / run$0.01

Avg runtime~8s

Setup time25 min

Runs logged52,300

What a run looks like

Detects the open shiftWatches the schedule for a callout, no-show, or newly added shift.
Filters to who can actually work itCertification, overtime status, and distance to site.
Texts in wavesFive people at a time, 4 minutes apart, so you do not double-book the whole roster.
First yes winsConfirms one, tells the rest it is covered, writes it to the schedule.

Wired to

TwilioWhen I WorkGoogle Calendar

What you’ll need

Twilio number
A scheduling system with an API, or a Google Sheet roster
Certifications recorded per employee

Reviews 129 ratings

Tom BrackettOps manager, HVACAug 2026

Free and it fills a callout in under 6 minutes. I keep waiting for the catch.

Only accounts that have claimed this agent can review it.

Version history

Version	Released	Change
1.9	Aug 2026	Overtime guard added.
1.5	Feb 2026	Wave sizing became configurable.

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