Custom Software Development Company in USA

GreyScript AI is a custom software and AI development company. We design and ship production systems in the United States: AI-native web and mobile apps, intelligent agents, MCP tooling, retrieval, automation, and AI added into software you already run.

US buyers usually search for a custom software development company in the USA, an AI development company, or an AI agent development partner that can take a use case into production. That is the work we do. Engagements start with a 30-minute scoping call. We reply within one business day. There is no published price list; the written proposal after the call sets scope, timeline, and price.

Custom AI and software we build

We are a custom software and AI development company, building in the United States. Each of the fourteen services is scoped on its own: web and mobile apps, agents, MCP tooling, integration, automation, and more. A strategy engagement does not commit you to a build.

AI strategy and readinessScore the ideas before any engineering starts. Usually 2 to 4 weeks. AI-native web and SaaSA new product where AI is the core, not a feature added later. AI-native mobile appsiOS and Android, with on-device inference where latency or privacy needs it. AI agents and copilotsCopilots, chat products, and multi-agent workflows, with a person on the actions that matter. MCP and agent toolingSafe, structured access to your database, internal APIs, and other tools. Custom modelsFine-tuning when a general-purpose model is not accurate enough. AI integrationAI added to a product you already ship, inside the current codebase. MLOpsDeploy, watch latency and drift, and keep token cost under control. Vision and languageDocuments, images, and text classification. Workflow automationThe internal process that actually wastes time, then the tools around it. Data preparationPipelines, cleaning, and schemas so retrieval and fine-tuning are reliable. Voice AIPhone lines and in-app voice, with a handoff to a person. Chatbots and website copilotsPre-sales and support, grounded on a curated knowledge base. AI governance and securityPrompt injection, tool misuse, and data exposure, before or after launch.

Examples from our work

These are illustrative examples. The company in each one is anonymized, and the figures are not a documented client result.

61% Support agent for a regulated lender Retrieval, guardrails, and an audit trail. Answers stay on retrieved sources. Read the case study 61% Fraud model for payments Fewer false positives, without adding fraud loss. Read the case study 1 day KYC intake for a credit union Median account opening, down from five days. A person still decides. Read the case study 96% Coverage answers that cite the clause The system stops when the policy does not contain the answer. Read the case study 11 Adversarial security review Exploitable findings, including three rated critical. Read the case study

Working with us

The same engineers who scope the work also deploy it. Nothing is handed to a different group at launch. A person on your side still approves the actions that matter, and an answer that touches a customer record has to point back to a source.

You leave the first call with a clear view of whether and how we can help. If it is a fit, you get a written proposal before any build starts.

Most engagements start with the AI strategy work: a short, fixed-scope pass over your use cases before any build begins. If a use case does not hold up under that review, we say so, rather than starting a build that was not going to work.

From first call to production

1DiscoveryMap your data and the narrowest use case that can prove value.

2PrototypeA working system against real data, measured before build.

3PilotA limited slice of real usage, before we harden it.

4ProductionThe same engineers integrate, monitor, and ship.

5OperateWe stay on latency, cost, and model updates.

See the full approach

Privacy, security, and audit for US products

We build the system so it can sit inside the rules your product already has to meet. We are not a certified compliance vendor. Where a formal audit or certification is yours to commission, we say so.

HIPAA-aligned data handling when health data is in scope. Patterns that match covered-entity expectations. Not a HIPAA certification.

CCPA and other US state privacy rules for consumer-facing products, including access, correction, and deletion.

SOC 2-ready logging and access control that can support your own audit. We do not issue the report.

NIST AI Risk Management Framework as a practical way to categorize risk. Not a certificate.

Security review for prompt injection, tool misuse, and data exposure, on the governance engagement or inside a build.

Browse all case studies and the industries we write for, including fintech, healthcare, banking, insurance, payments, SaaS and mobile, retail, and logistics. We also work with companies in Europe, United Kingdom, Netherlands, and Australia.

Start a project

Book a scoping call. It is 30 minutes, with no deck. Tell us what you are building, what data it touches, and how you would measure success. Email contactus@greyscripttech.com. Read how this website handles personal information.

Questions

Is GreyScript AI a custom software development company in the USA?

Yes. GreyScript AI is a custom software and AI development company operating in the United States. We ship web and mobile apps, AI agents, MCP tooling, RAG, automation, and integration into products you already run.

What AI services do you offer in the United States?

Fourteen services, each scoped on its own: AI strategy, AI-native web and SaaS, mobile, agents, MCP tooling, custom models, integration, MLOps, vision and language, automation, data preparation, voice, chatbots, and governance.

Do you publish US prices?

No. There is no published price list. A scoping call is how a range gets set, and the proposal after that call states scope, timeline, and price.

Do you certify HIPAA, SOC 2, or CCPA compliance?

No. We design for HIPAA-aligned data handling, SOC 2 logging and access control, and US state privacy rules such as the CCPA. We are not a certified compliance vendor. A formal audit or certification stays yours to commission.

Are the case studies real client results?

No. Case studies on this site are illustrative. The company is anonymized, and the figures are not a documented client result.

Can we hire a single service?

Yes. A strategy engagement does not commit you to a build, and a governance review can stand alone.