Legacy systems
Old code full of rules no one wrote down. We surface those rules, turn them into criteria, and rebuild with each one traced to its source.
Pilot-readyGoverned AI software delivery.
Code and Matter is the most advanced end-to-end autonomous software factory. No drift. No AI slop. It runs like a kernel, precise and dependable, across legacy systems, new products, agentic implementations and workflows. It works every time, and gets better every day from the world model it is connected to.
Now accepting pilot partners.
Follow one requirementTeams we work with
What teams bring us
The problems teams bring to Code and Matter.
Old code full of rules no one wrote down. We surface those rules, turn them into criteria, and rebuild with each one traced to its source.
Pilot-readyWork that has to be right every time. Agents take the routine cases and hand the unusual ones to a person.
Pilot-readyThe business systems you already run. A controlled layer lets agents use them safely, with no migration.
Pilot-readyA feature your team needs. We agree the criteria and proof first, then build and verify it.
Pilot-readyWhat people say
Illustrative testimonials · names, roles and quotes are placeholders
“Our biggest problem wasn’t writing code. It was getting everyone to agree on what we were building. Having the requirements and acceptance criteria in one place gave us something concrete to review before implementation started. We caught a missing edge case while it was still easy to change.”
“I’ve been cautious about bringing coding agents into an established codebase. Even a small change can affect things outside the ticket. What appealed to me about Code and Matter was keeping the requirement, implementation decisions, and review evidence connected. That’s the context I need before approving a change.”
“Reviewing a change usually means opening the ticket, reading the diff, and asking someone where the test results are. Having those pieces connected made the review easier to follow. We still had questions, but they were about the actual behavior rather than where to find the information.”
“Requirements change once people see the work. The difficult part is making sure the implementation and tests reflect the latest decision. A living specification gave us a clearer place to record those changes instead of leaving them scattered across meeting notes and chat.”
“We wanted to try agent-assisted delivery with clear limits on what could happen in our systems. Starting with a bounded task and explicit approval points made the approach easier to evaluate. Our team could review the proposed work before deciding what should happen next.”
“A green test result doesn’t answer every question. I still want to know which acceptance criteria were checked, which scenarios were missed, and what needs manual review. Making those gaps visible helped us decide where to spend our testing time.”
“We chose a small change to an existing workflow as our starting point. We already understood the system, so we could judge the result ourselves. Defining the acceptance criteria upfront also exposed a couple of assumptions we hadn’t written down.”
“The handoff is often where we lose context. Design makes a decision, engineering interprets it, and QA has to reconstruct why it happened. Keeping the requirement and reasoning attached to the work made it easier for the next person to pick it up without another meeting.”
“We need to understand the cost of getting a change accepted, including review and rework. Code generation is only part of that. I liked starting the conversation with the scope, budget, and evidence our team would need to accept the result.”
“As a small team, we don’t have much room for work that looks finished but still needs days of cleanup. What interested us was being able to inspect the result against a clear requirement. Starting with one useful change gave us a manageable way to assess the approach.”
01 / The workflow
Every step leaves a record the next step checks. Nothing ships until a person signs off.
Product intentSomeone describes what they need, in plain words.
Living specificationThat need becomes a criterion you can test.
Coordinated executionAn agent, limited to the right files, makes the change.
Verified evidenceTests prove the criterion is met, and point back to it.
Human release decisionThe release waits for an owner to approve it.
02 / Platform
What we are building, and how each part depends on the last.
Requirements and criteria live in one versioned place. Scope changes land in the spec first, so every agent works from the latest version.
Agents for design, code, test and deployment share one spec and work on clearly bounded tasks, so the pieces fit.
Every change arrives with its criterion, its diff and its test results together. Reviewers judge evidence, not claims.
03 / The spec
Open the files of an example project. Each one links to the others.
04 / How it works
Turn the idea into criteria a person approves.
✓Shape screens and system design around those criteria.
✓Break the work into tasks, each with clear limits.
✓Write changes that each point to the criterion they serve.
✓Test against the criteria, so a pass means the need is met.
✓Release only after a person approves, then follow the agreed path.
■Keep watching, and suggest updates through the spec.
↺05 / Human control
Key moments, like approving criteria or releasing, wait for a named person.
Each agent works only where it has been allowed. Anything wider needs approval.
See what each requirement costs as it runs. A set limit pauses the work.
Who decided what, when, and based on which evidence, saved with the requirement.
How to start
Two ways to begin.
Choose one requirement. See the whole process work before you commit to more.
Open nowBring a larger system. We map it out with you and deliver it in stages.
Scoped by emailPrinciples
The three ideas behind every part of the platform.
You choose where it runs, which AI models it uses, and what each agent can touch.
PrincipleEvery change is linked to a criterion, checked against evidence, and approved by a person.
PrincipleCosts are tracked per requirement, so you know what each piece of software took to deliver.
PrincipleFor larger teams
Everything larger organisations need, built in.
Single sign-on with every major identity provider, plus automatic user setup.
IncludedReserved capacity for your work, fully separate from other customers.
IncludedBuilt to meet security and AI-governance standards.
IncludedConnections built around the systems your business runs on.
IncludedA named contact and guaranteed response times.
IncludedWorks across the languages and frameworks your teams use worldwide.
IncludedKeep nothing after a task is done, if that is what you need.
IncludedRun it in your own environment, or keep data in your region.
IncludedSeparate spaces and admin for each team or business unit.
Included06 / Scope
Everything you need to take software from intent to release, in one platform.
Shape requirements together, with an AI partner that spots gaps, conflicts and repeats as you write.
IncludedPropose changes, discuss them in place, and compare or restore any earlier version.
IncludedDesigns built directly from the criteria, reviewed and signed off by your engineers.
IncludedCatch code that has drifted from the spec, flagged right on the pull request.
IncludedStart from what you have. Bring in your codebase and move your backlog across in one step.
IncludedEvery piece of feedback is sorted and fed back into the spec, so it keeps improving.
IncludedClear tasks for agents, each one tied to the criterion it delivers.
IncludedAgents run inside the editors and tools your team already loves.
IncludedLarge jobs split into parts and completed by many agents at once.
IncludedAgents keep working in the cloud, even after you close your laptop.
IncludedAlways-on workspaces where agents keep their files, tools and setup.
IncludedEvery task goes to the model that does it best, at the right cost.
IncludedGive agents proven skills, and rules they must follow before they act.
IncludedTests written from the acceptance criteria, so a pass means the need is truly met.
IncludedEvery change reviewed line by line, ready for a person to approve.
IncludedEvery change checked for security issues before it moves on.
IncludedCriterion, change and results in one view, so review takes minutes.
IncludedDocumentation that updates itself whenever the code changes.
IncludedFrom ticket to change, from error to fix. Triage, testing and upkeep, running on schedule.
IncludedSee every agent, task and log as the work happens.
IncludedKnow exactly how ready your codebase is for agents, before day one.
IncludedTurn legacy code into clear rules, then rebuild it with every rule traced.
IncludedAgents handle the routine. The cases that need judgement go straight to a person.
IncludedAgents work safely with the business systems you already run.
IncludedSign-off and release wait for a named person, every time.
IncludedEach agent works only where it is allowed. Nothing more.
IncludedKnow what each requirement costs as it runs, with a hard limit you set.
IncludedEvery decision recorded and ready to export to your security tools.
IncludedSet autonomy levels, allowed models, blocked actions and network rules in one place.
IncludedBring reviewers and stakeholders in to follow the work, without a full seat.
IncludedUsage, spend and delivered work across every team, at a glance.
IncludedPlug into your code hosts, trackers, team chat, docs and monitoring.
IncludedRun agents and automations straight from your own systems.
IncludedAny agent, in any tool, can read and search your spec.
IncludedSign in with your identity provider, with users set up automatically.
IncludedSingle-tenant, on-premise or in your region. Your choice.
IncludedNever used for training. Encrypted at every step.
IncludedStart with one requirement and see it delivered and proven, end to end.
IncludedOur engineers work side by side with yours.
IncludedWe run, update and look after the platform for you.
IncludedHands-on onboarding and direct access to the people building it.
Included41 capabilities. One platform.
Plans
Start with a pilot. Grow into the platform.
One requirement, its proof and its release decision. Scoped together by email.
Open nowThe full platform for one team, with shared spend limits and approvals.
Talk to usSingle sign-on, admin controls, audit trail and dedicated support.
Talk to usPrivate hosting, dedicated compute, data residency and a named team.
Talk to usQuestions
Everything you need to know about working with Code and Matter.
A coding assistant helps one person write code. Code and Matter runs the whole delivery: requirement, design, code, tests, evidence and a human release decision, all connected in one place.
Yes. Every pilot begins with your existing codebase and a readiness check, so agents start from what is really there.
Code and Matter is built to fit the tools your team already uses. We set up each pilot around your stack.
A pilot is built around one requirement, so it is focused and fast. We agree the timeline with you on day one.
Pilots are scoped to your requirement and priced to match. Email us and we will send a clear proposal.
Yes. Private hosting is part of the platform design, so your code and data stay where you need them.
Everything. Each requirement comes with its code change, its test evidence and the name of the person who approved it.
Code and Matter is model-independent. Each task is routed to the model that fits it best on quality and cost.
You do. Everything produced in your project belongs to you.
Yes. Bring your own AI keys and keep full control of your model accounts.
Work on that requirement pauses automatically, and a person decides what happens next. You never get a surprise bill.
Pilots are open now. Bring us a requirement and we will show you the full workflow on your own work.
07 / Pilot
Tell us one thing you need built, and what would prove it works. We'll reply to explore whether a pilot is a good fit.
Discuss a pilot info@codeandmatter.com