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Calls answered on Meddle: 1

The voice agent platform
you build on yourself

Built with the AI you already use.
Tested against your hardest callers.

You build your own voice agents by talking to the AI you already use. We run everything underneath.

Prove it before you launch

Every test call gets scored. You see the one that fails before a caller ever does.

LISTENMODELVOICELINECALLER
Build the agent, not the plumbing

You write what it says and knows. We run the number, the listening, the model and the voice.

NOVA 3INK 2FLUXINK WHISPERNOVA 2NOVA 3INK 2FLUXINK WHISPERNOVA 2NOVA 3INK 2FLUXINK WHISPERNOVA 2NOVA 3INK 2FLUXINK WHISPERNOVA 2HAIKU 4.53.5 FLASHGPT-5.4LLAMA 3.3 70BQWEN3.6 27BGPT-OSS 120BGEMMA 4 31BMERCURY 2HAIKU 4.53.5 FLASHGPT-5.4LLAMA 3.3 70BQWEN3.6 27BHAIKU 4.53.5 FLASHGPT-5.4LLAMA 3.3 70BQWEN3.6 27BGPT-OSS 120BGEMMA 4 31BMERCURY 2HAIKU 4.53.5 FLASHGPT-5.4LLAMA 3.3 70BQWEN3.6 27BSONIC 3.5FLASH V2.5SONIC 3TURBO V2.5SONIC 3.5FLASH V2.5SONIC 3TURBO V2.5SONIC 3.5SONIC 3.5FLASH V2.5SONIC 3TURBO V2.5SONIC 3.5FLASH V2.5SONIC 3TURBO V2.5SONIC 3.5
Swap any part of it

The model, the listener, the voice. Change any of them per agent, and calls keep running.

FIG 0.2
Prove it before you launch

Every test call gets scored. You see the one that fails before a caller ever does.

FIG 0.3
LISTENMODELVOICELINECALLER
Build the agent, not the plumbingYou write what it says and knows. We run the number, the listening, the model and the voice.

You write what it says and knows. We run the number, the listening, the model and the voice.

FIG 0.4
NOVA 3INK 2FLUXINK WHISPERNOVA 2NOVA 3INK 2FLUXINK WHISPERNOVA 2NOVA 3INK 2FLUXINK WHISPERNOVA 2NOVA 3INK 2FLUXINK WHISPERNOVA 2HAIKU 4.53.5 FLASHGPT-5.4LLAMA 3.3 70BQWEN3.6 27BGPT-OSS 120BGEMMA 4 31BMERCURY 2HAIKU 4.53.5 FLASHGPT-5.4LLAMA 3.3 70BQWEN3.6 27BHAIKU 4.53.5 FLASHGPT-5.4LLAMA 3.3 70BQWEN3.6 27BGPT-OSS 120BGEMMA 4 31BMERCURY 2HAIKU 4.53.5 FLASHGPT-5.4LLAMA 3.3 70BQWEN3.6 27BSONIC 3.5FLASH V2.5SONIC 3TURBO V2.5SONIC 3.5FLASH V2.5SONIC 3TURBO V2.5SONIC 3.5SONIC 3.5FLASH V2.5SONIC 3TURBO V2.5SONIC 3.5FLASH V2.5SONIC 3TURBO V2.5SONIC 3.5
Swap any part of it

The model, the listener, the voice. Change any of them per agent, and calls keep running.

It tests itself before it answers anyone

Your agent writes its own test callers, confused, angry, changing their mind mid-call, and runs the calls. You see what breaks before a customer hears it.

1.0Test→
Type
Label
Runs
Status
Score
suite
Full regression sweep
12
Completed
83%
single
burst-pipe-9pm-no-booking
5
Completed
100%
single
quote-callback
3
Failed
33%
single
blocked-drain-booking
1
Completed
100%
single
hot-water-failure
8
Completed
100%
single
short-answer-handling
2
Failed
0%
single
no-premature-hangup
1
Completed
100%
single
emergency-triage
10
Completed
100%
single
no-fabrication-guard
5
Completed
100%
single
suburb-coverage-lookup
4
Completed
100%
single
no-double-speak
3
Completed
100%
ScenarioBurst pipe, 9pm, no booking
5 runs41s avg1h ago
Passed
The callerWater coming through the laundry ceiling. Angry, talking over the top of you, never rung you before. Calls at 9:04pm.
Must happen
Reaches the on-call plumber
Never offers a callback in the morning
Reads the address back before hanging up
Judge5 of 5 runs reached the on-call plumber. 1.2s to the first word.
ScenarioBurst pipe, 9pm, no booking
5 runs41s avg1h ago
Passed
The callerWater coming through the laundry ceiling. Angry, talking over the top of you, never rung you before. Calls at 9:04pm.
Must happen
Reaches the on-call plumber
Never offers a callback in the morning
Reads the address back before hanging up
Judge5 of 5 runs reached the on-call plumber. 1.2s to the first word.
1.1Scenarios+
1.2Personas+
1.3Runs+
1.4Variants+

Every tool your agent needs, already wired

Calendars, CRMs, your own API. A thousand integrations with the logins handled, so your agent checks availability and books the job without you building anything.

2.0Tools→
on_call_rosterYours · GET
Transfer to humanPrebuilt
Send text messagePrebuilt
End callPrebuilt
Google Calendar6 tools
Gmail5 tools
Slack5 tools
Stripe6 tools
Calendly5 tools
Outlook5 tools
HubSpot6 tools
Salesforce8 tools
Shopify7 tools
Microsoft Teams4 tools
Google Meet3 tools
Google Calendarreception@harbourline.com.au
Connected
6 tools arrived with it
check_availabilityRead the run sheet for open slots
create_eventBook the job into the calendar
reschedule_eventMove a booking and release the old slot
cancel_eventCancel and free the slot
list_eventsRead what's on for a given day
find_timeFind the next slot that suits the caller
Last used 9:51pm tonightcreate_event · burst pipe, Dana Whitfield, 7:30am
Google Calendarreception@harbourline.com.au
Connected
6 tools arrived with it
check_availabilityRead the run sheet for open slots
create_eventBook the job into the calendar
reschedule_eventMove a booking and release the old slot
cancel_eventCancel and free the slot
list_eventsRead what's on for a given day
find_timeFind the next slot that suits the caller
Last used 9:51pm tonightcreate_event · burst pipe, Dana Whitfield, 7:30am

Nothing hidden

Read the prompt. Change the model. Play the recording. Follow any answer back to the rule that produced it.

3.0Calls→
Dana WhitfieldTuesday 9:47pm, after hours
Completed
0:00 / 0:05
Caller“There’s water coming through the laundry ceiling, it’s everywhere. I need someone now.”
Agent“A burst pipe at night? That’s urgent. I’ll get the on-call plumber moving now.”
Why it said that
System promptharbourline-reception · version 12 · published
12# Booking
13Offer the next two open slots. Read the address back before you confirm.
14
15# Urgent jobs
16A burst pipe, a gas smell or no hot water is urgent. Say so, then offer
17the on-call plumber straight away.
18
19# After hours
20Between 6pm and 7am the office is shut. Never offer a morning callback
21for an urgent job. Ring the on-call plumber on the roster instead.
22
23# Never
24Never quote a price. Never promise a time you have not checked.
Dana WhitfieldTuesday 9:47pm, after hours
Completed
0:00 / 0:05
Caller“There’s water coming through the laundry ceiling, it’s everywhere. I need someone now.”
Agent“A burst pipe at night? That’s urgent. I’ll get the on-call plumber moving now.”
Why it said that
System promptharbourline-reception · version 12 · published
12# Booking
13Offer the next two open slots. Read the address back before you confirm.
14
15# Urgent jobs
16A burst pipe, a gas smell or no hot water is urgent. Say so, then offer
17the on-call plumber straight away.
18
19# After hours
20Between 6pm and 7am the office is shut. Never offer a morning callback
21for an urgent job. Ring the on-call plumber on the roster instead.
22
23# Never
24Never quote a price. Never promise a time you have not checked.
3.1Transcripts
3.2Recordings
3.3Tool calls
3.4Outcomes

Not just the one line

Many agents, many numbers, one shared brain. What your after-hours line learns, your sales line already knows. Agencies run a book of clients on it.

4.0Fleet→
Name
Status
Model
Voice
Versions
Updated
Ironbark Electrical
Needs Work
FAST
Emma
2
1d ago
Harbourline Plumbing Reception
Live
FAST
Emma
2
1d ago
Marlin & Co Dental
Live
BALANCE
Amelia
4
3d ago
Southbay Vet After-hours
Draft
FAST
George
1
3d ago
Northcliff Physio
Live
FAST
Amelia
3
16 July
Golden Wattle Removals
Draft
BALANCE
George
1
11 July
Redgum Auto Electrical
Live
FAST
George
2
9 July
Kingsley Locksmiths
Live
FAST
Amelia
5
4 July
Shared knowledgeAfter-hours policy
Note
The office is shut from 6pm to 7am. Urgent jobs go straight to whoever is on the roster that night, no exceptions.Everything else takes a message and we ring back after 7am.
Read by
Harbourline Plumbing ReceptionIronbark ElectricalMarlin & Co DentalSouthbay Vet After-hoursNorthcliff PhysioGolden Wattle Removals
Edited once, 3 days ago. 214 reads this week.
Shared knowledgeAfter-hours policy
Note
The office is shut from 6pm to 7am. Urgent jobs go straight to whoever is on the roster that night, no exceptions.Everything else takes a message and we ring back after 7am.
Read by
Harbourline Plumbing ReceptionIronbark ElectricalMarlin & Co DentalSouthbay Vet After-hoursNorthcliff PhysioGolden Wattle Removals
Edited once, 3 days ago. 214 reads this week.

Our picks are defaults, not a cage

We pick the model, the voice and the transcription, and swap them as better ones land. If you'd rather choose, every one is a dropdown, no accounts to open.

5.0Models→
Search the catalogue...
All providers
Australian only
Any speed
Sort: recommended
The brainpicks the words
The voicehow it sounds on the phone
The earshow it hears the caller
Your stackPicked for Harbourline Plumbing Reception
The brain
Claude Haiku 4.5FAST
Anthropic's fast, low-cost model. A strong default for most calls.
The voice
ElevenLabs EmmaWARM
Warm and unhurried. The voice most callers assume is the receptionist.
The ears
Deepgram FluxNOISE-PROOF
Built for mobiles, speakerphones and traffic noise.
675ms to the first word on tonight’s calls.All three run in Australia. Swapped for you as better ones land.
Your stackPicked for Harbourline Plumbing Reception
The brain
Claude Haiku 4.5FAST
Anthropic's fast, low-cost model. A strong default for most calls.
The voice
ElevenLabs EmmaWARM
Warm and unhurried. The voice most callers assume is the receptionist.
The ears
Deepgram FluxNOISE-PROOF
Built for mobiles, speakerphones and traffic noise.
675ms to the first word on tonight’s calls.All three run in Australia. Swapped for you as better ones land.

Watch it work

Call volume, outcomes and answer speed on one screen. When something drifts, you'll see it before your callers do.

6.0Monitor→
Success rate96%
Number of calls829
Total call minutes1989:36
Median latency616ms
Booked on the call61%
Transferred4%
After hours212
Repeat callers38%
Outcome mix
Calls per week
Answer speed
Total callsLast 90 days
829↑ 18%
WED 16 JULY31 calls
MAYJUNJUL
Answered96%Avg call41sTransferred4%
After-hours line drifted past 900msWe texted you at 9:02pm, two minutes after it started.
Total callsLast 90 days
829↑ 18%
WED 16 JULY31 calls
MAYJUNJUL
Answered96%Avg call41sTransferred4%
After-hours line drifted past 900msWe texted you at 9:02pm, two minutes after it started.

From the teams running it

136

calls in 24 days

48 messages taken, 18 handed to a person.

Property managementMaddington, WALive since July 2026

80

calls in 13 days

40 pickups sent to the driver, address checked first.

Courtesy bus lineEmerald, QLDLive since July 2026

127

calls across four businesses

All on one number. 40 messages sent to the right inbox.

Group receptionPerth, WALive since June 2026

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