AI agent development
AI agents for business, built to do real jobs
Custom AI agents that do real work inside your company, with the limits, costs and records that let you trust them. Built by someone who ships agents in public.
An AI agent is software that does work on its own inside your business. Not a chat window someone asks questions. Software that takes a job, reaches into your systems, does it, and reports back.
They are good enough now to be given real work. Most businesses that try them still end up with an expensive demo, and it is almost never the model's fault.
Why most agent projects stall
A company decides to "add agents." Someone wires a model to a few tools, it does something impressive in a meeting, and six weeks later nobody trusts it with anything that matters.
The reason is that the agent was given capability without employment. A person you hire gets an identity, access appropriate to the role, a manager who sets limits, a budget, and a record of what they did. An agent usually gets none of that. It wears the login of whoever set it up, it either asks permission for everything or for nothing, and nobody can say what it costs or what it did last Tuesday.
So it never gets trusted with anything consequential, so it never does anything consequential, so the project gets cancelled.
What I build
Agents that do a specific job in your business, plus the five things that let you trust them with it.
- Identity. Every agent is someone: a name, a role, an accountable owner, a signature on its work.
- Authority. What it may do alone, what needs approval, and what is forbidden. Written down, not assumed.
- Direction. Work arrives in a form it can execute, in priority order, and it can reach a person wherever they are when it needs judgment.
- Accounting. What each unit of agent work costs, and how often it fails, so you can price the work and see what makes money.
- Record. What was done, by whom, under what authority, at what cost. In a company that runs on agents, this history becomes the asset.
The specific agents depend on your business. Common starting points are sales development and outreach, client follow up and reporting, intake and triage, content production, research, and the back office work that eats a team's week.
Agents I have already built in public
You should not have to take an agent builder's word for it. A lot of mine are open source.
- Harvey, an autonomous AI sales agent. It finds prospects, writes cold emails, sends campaigns, handles replies and books meetings. Over 2,000 developers have starred it on GitHub.
- JARVIS, a voice-first assistant for your Mac. You talk to your computer, it talks back and gets things done.
- Codex on Crack, which lets one conversation plan, delegate to other models, and review their work. It is how I run long builds without burning through usage limits.
- Billr, invoicing with a built-in MCP server, so agents can do the billing work with you. Hosted, or self-host the open source version.
- Agent Ledger, a local workspace for understanding what your coding agents did and what it cost.
And two businesses that run on agents: INKRALLY, where GPT-6 runs the whole business, and Plastix, a marketing agency being rebuilt to run on agents.
How a build works
- Pick the job. One process, chosen because it is valuable and ready, not because it makes a good demo.
- Write it down. What the work is, what good looks like, the exceptions, and what must never happen. This document is what the agent works from.
- Make the systems reachable. The agent gets the same access a person in that role has, inside the same boundaries.
- Run it with a person watching. Every output is checked by someone who knows the work, and the agent never grades its own homework.
- Hand it the loop. Once it is reliable, it runs on its own, with a defined trigger, output and moment where it hands back to a person.
- Hand it to you. Your team learns to run it, change it and build the next one.
If you have a job in mind, tell me about it. If you are earlier than that and want to know where agents fit in your company at all, start with AI consulting.
Questions people ask
- What is an AI agent, in plain terms?
- Software that does work on its own inside your business. You give it access to your systems and a clear description of the job, and it does the job and reports back. A chatbot answers questions about the work. An agent does the work.
- What can AI agents do for a business today?
- Real, repeatable jobs: prospecting and outreach, follow ups, intake, reporting, research, content production, invoicing, support triage, and a lot of internal operations. The limit is rarely the model. It is whether the process is written down and whether the agent can reach the systems the work lives in.
- How much does it cost to build an AI agent?
- A narrow agent for one well defined process costs far less than a set of agents running a department, and the running cost depends on how much work it does and which models it uses. The AI consulting cost page breaks down both.
- Should we build custom agents or buy an agent product?
- Buy when a product fits the job and your data can live there. Build when the work is specific to how you operate, when it needs to act across several of your systems, or when you want to own it outright. Most companies end up with both, and the hard part is the same either way: limits, approvals, costs and records.
- Who owns what you build?
- You do. The code, the prompts, the process documents and the data stay with your company.