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Custom AI Agent

Describe the job. We build the hire.

Think of it as a new member of staff for one recurring job, done start to finish: it reads, checks, writes and updates your tools, on a schedule or the moment something happens. You write the job in one sentence. We turn it into a blueprint, build it and stay on call.

Works inside the tools you already pay for
  • HubSpot
  • Gmail
  • Slack
  • Shopify
  • Stripe
  • Google Sheets
  • Notion
  • Zendesk
  • n8n
  • Your own API
Blueprint: try an example
The job, in your words

“Every Monday, research our competitors and email a summary.”

Becomes five building blocks

  1. 01TriggerEvery Monday at 7:00 amOn a schedule, so nobody has to remember
  2. 02Steps
    1. Visit 12 competitor sites, pricing pages and socials
    2. Compare everything with last week's snapshot
    3. Write a one-page summary of what changed
  3. 03Tools
    • Web browsing
    • Google Sheets
    • Gmail
  4. 04Human checkpointYou skim the first four reports, then it runs on its own
  5. 05OutputA summary in the team inbox by 8:00 am, with changes flagged
Best fit Starter AI Agent from $2,997 See this tier

Jobs we hand to custom agents every week.

If someone on your team does it the same way every time, with the same tools, an agent can usually do it faster, and at 3 am. These are the ones we build most.

Research and reporting

Competitor, market and price watching

It reads the pages you would read, spots what changed and writes it up in your format. No more Monday morning tab marathons.

Leads and follow-ups

Every lead researched, scored and answered

New enquiry in, company looked up, score set, personal reply drafted. Your team only talks to the warm ones.

Content on a schedule

Ideas, scripts and posts

Built from what is trending today, written in your voice and queued for the right time.

Back office

Orders, invoices and stock

Checked against each other every night, with the mismatches fixed or flagged by morning.

CRM housekeeping

A tidy CRM, finally

Duplicates merged, empty fields filled and notes written after every call or email.

And what it never does alone

Send money, delete records or say something new to a customer without a person saying yes. You decide where the line sits. We build it in.

  • Refunds over your limit
  • Contract changes
  • First message to a VIP

Flexible Custom AI Agent Development Pricing Plans

Explore flexible AI Agent Development plans tailored to your business. Our transparent pricing ensures smarter automation, better efficiency, and real ROI—helping you scale with confidence.

Which tier fits? Three questions

1How many workflows should it run?
2How many systems does it need to touch?
3Should it make decisions on its own?
Your match

0 of 3 answered

Answer three questions

We will highlight the tier that covers your job, and nothing bigger than you need.

Startup Plan

Startup Plan

AI-powered digital growth for startups seeking fast, qualified growth.

USD / Setup Fee$2,997$3,746.25Flat 20% Off
Key capabilities
  • 1 Custom AI Agent for a Specific Task (e.g., Lead Follow-Up, Data Research, Report Generation)
  • Basic Prompt Engineering & Task Flow Setup
  • Connection to 1–2 Data Sources or Tools
  • Limited Autonomy (Executes only predefined actions)
  • Manual Trigger or Simple Scheduling
1 Round of RevisionsDelivery: 7–10 Business Days
Most popular

Premium Plan

Scale smarter with custom AI agents designed to boost engagement and conversions.

USD / Setup Fee$6,497$8,121.25Flat 20% Off
Key capabilities
  • Everything in Starter
  • Multi-Task Capabilities (Sales Outreach + Lead Qualification + Follow-Ups)
  • Access to Multiple Data Sources & APIs
  • Autonomous Task Scheduling & Execution
  • Intermediate Decision-Making (Based on Data & Rules)
  • Integration with CRM, Email, and Communication Tools
  • Activity Logs & Performance Reports
2 Round of RevisionsDelivery: 21–28 business days
Enterprise grade

Diamond Plan

Unlock advanced AI automation, voice agents, and tailored solutions for maximum ROI.

USD / Setup Fee$12,997$15,596.25Flat 20% Off
Key capabilities
  • Everything in Premium
  • Multiple AI Agents Operating in Coordination (Sales, Support, Operations)
  • Dynamic Goal-Oriented Autonomy (Self-Creates Tasks to Meet Objectives)
  • Integration Across Multiple Systems (CRM, ERP, Support Platforms, Payment Systems)
  • Real-Time Data Analysis & Decision-Making
  • Advanced Memory & Continuous Learning from Interactions
  • Multi-Language Support
3 Round of RevisionsDelivery: 30–45 business days

All prices are paid once, at setup. Model and hosting usage is billed at cost.

Add-Ons to supercharge your AI (optional)

Bolt any of these onto any tier, at the start or later on.

Add-on

Additional AI Agent

+$2,497

Deploy a secondary specialist agent collaborating in real-time with your core swarm.

Add-on

Agent with Web Browsing

+$997

Search live web data, verify facts, crawl portals, and extract real-time web intelligence.

Add-on

Enterprise Security

Custom Quote

On-premise deployment, private VPC hosting, strict RBAC, and HIPAA/SOC2 compliance.

Add-on

Ongoing Optimization

From $497/mo

Continuous prompt engineering, model updates, performance monitoring, and priority SLA.

Not sure which plan? Talk it through with us.

We'll review your workflows, recommend the right agent architecture, and estimate exact delivery timelines.

From one sentence to a working member of staff.

Five stops, shown here for an Autonomous Multi-Agent build. Starter moves faster, Enterprise takes a little longer, and you see every stop.

  1. 01

    Scoping call

    We take the sentence you wrote and turn it into a blueprint: trigger, steps, tools, checkpoints and output.

    Day 1 to 2
  2. 02

    Blueprint sign-off

    You see every step, every tool it touches and every place it stops for a person. Nothing gets built until you say yes.

    Day 2 to 4
  3. 03

    Build

    We connect your tools, write the prompts and rules, and wire up the data, memory and logs it needs.

    Day 4 to 10
  4. 04

    Sandbox testing

    It runs on copies of your real data and against the odd cases until it behaves. You get the full test log.

    Day 9 to 12
  5. 05

    Go live

    Switched on with alerts and run logs, plus a named engineer on our side watching it closely for the first 30 days.

    Day 12 to 14

Custom agent results

Scheduled runs finished on time0

across every custom agent we look after, last 90 days.

Custom agents live0

doing real jobs for real teams

Median build0 days

for an Autonomous Multi-Agent

Hours handed back0 hrs

per agent, per month, from client logs

Payments sent without approval
0

Ever. Moving money, deleting data or telling a customer something new always needs a person's yes first.

Why owners hire Tessera for this.

Agents are easy to demo and hard to trust. These are the habits that make ours boring, in the best way.

You own all of it

Prompts, workflows, accounts and data live in your accounts, not ours. If we ever part ways, the agent stays with you, fully documented and still running.

A person in the loop where it matters

We mark every risky step in the blueprint and build an approval into it. One tap in Slack, email or WhatsApp and it carries on.

Costs on the label

Running costs are estimated before the build and billed at cost, usually $40 to $400 a month.

One owner

One engineer from scoping call to launch. You get their WhatsApp.

Teams that handed over the boring bit.

Three custom agents, three very different jobs, all still running.

“Our Monday competitor round-up used to take Jess half a day. Now it's in the inbox before she has made coffee, and it catches things she used to miss.”
Daniel OseiOperations lead, Harbourline FreightStarter AI Agent
“Every enquiry gets researched and a draft reply in about a minute. I just tap approve. It's like an assistant who never takes lunch.”
Megan HaleFounder, Hale & Fern InteriorsAutonomous Multi-Agent
“The nightly reconcile agent found eleven thousand pounds of mismatched refunds in its first month. Anything big still waits for me, which is exactly how I wanted it.”
Ravi MenonFinance director, Coastline OutdoorEnterprise Agent Swarm

Got a job that eats your week?

Send us the sentence. On a 30 minute call we will sketch the blueprint, name the tier and tell you when it could be live.