ZTABS

What it does

Writes code

YesCustom development is the core engagement: they write the application as well as the agent, and say AI assists their own delivery from code generation through deployment.Founded in 2015, we have served 300+ clients, shipped 23 production SaaS products of our own (10 AI-powered), and use AI across our entire…ztabs.co ↗

Debugs and fixes

PartlyThey diagnose defects as a QA and testing engagement, delivering reproducible bug reports and triaging failures; fixing is part of development or ongoing maintenance work rather than a standalone guarantee.We provide detailed bug reports with reproduction steps, screenshots, and severity classifications.ztabs.co/services/qa-testing ↗

Writes tests

YesAutomated unit, integration, end-to-end, load and mobile tests are a named deliverable, written into the client's own CI pipeline so pull requests are validated automatically.We write tests that run in your CI pipeline (GitHub Actions, GitLab CI, CircleCI) so every pull request is validated automatically.ztabs.co/services/qa-testing ↗

Reviews code

PartlyCode review appears as automation they build for clients using AutoGen multi-agent review crews, not as a review service you buy for an existing diff; the review capability is the delivered system.Our team has delivered hundreds of code review automation projects with AutoGen, and the results speak for themselves.ztabs.co/technologies/autogen-for-code-… ↗

Whole-codebase work

YesRepository-wide migrations are an explicit offering: they decompose legacy PHP, .NET, Java and desktop systems and modernise them module by module over six to eighteen months.Over 6–18 months, we migrate module by module until the entire application is modernized.ztabs.co/services/legacy-app-modernizat… ↗

Ships it

YesDelivery runs past the diff into production: they build CI/CD pipelines that deploy to staging and production, and deploy agents into the client environment with monitoring.The first deliverable is usually a CI/CD pipeline on GitHub Actions or GitLab CI that runs linting, type-checking, unit tests, and integration tests…ztabs.co/services/devops-services ↗

Done-for-you service

YesThis is a services business, not software you licence: a 25-person team designs, builds and continues to optimise the system for you after launch.We design and deploy autonomous AI agents that handle complex workflows, make decisions, and execute tasks across your business — from customer…ztabs.co/services/ai-agent-development ↗

How much it does unattended

Runs autonomously

YesThe agents they build are described as completing multi-step workflows end to end, with human-in-the-loop escalation reserved for edge cases rather than every step.A well-built agent can qualify a sales lead by researching the company, checking CRM history, drafting a personalized outreach email, and scheduling…ztabs.co/services/ai-agent-development ↗

Multi-agent

YesMulti-agent orchestration is a named capability, with specialised research, analysis and action agents built on LangChain, CrewAI and custom orchestration layers.We design multi-agent architectures where specialized agents collaborate: a research agent gathers data, an analysis agent interprets it, and an…ztabs.co/services/ai-agent-development ↗

Agent permissions

PartlyGuardrails are standard but their strictness is designed per engagement: rate limiting, content filtering, action confirmation and human-in-the-loop escalation are priced as scope, not a fixed policy model you configure.Every agent we ship includes guardrails — rate limiting, content filtering, human-in-the-loop escalation, and observability via tools like LangSmith…ztabs.co/services/ai-agent-development ↗

Which models it runs on

Claude

YesAnthropic Claude is named as one of the foundation models they build agents on, alongside OpenAI and Google, and is listed in the EMRG product stack.ZTABS delivers production-grade AI solutions using GPT-4o, Claude, Gemini, and open-source models, with 10 AI-powered products shipped and 300+…ztabs.co/ai ↗

GPT

YesOpenAI models are the most frequently named across the site, with a dedicated GPT integration service and GPT-4o cited for complex reasoning in their routing approach.Token-level budgeting, routing cheap models for simple queries and GPT-4o / Claude for complex reasoning, plus response caching.ztabs.co/ai ↗

Open models

YesOpen-weight models are supported both as integrations and as fine-tuning work, with Ollama listed for running Llama, Mistral and Phi on client infrastructure.Run open-source LLMs locally — Llama, Mistral, Phi, and more on your own infrastructure.ztabs.co/ai ↗

Model choice

YesModel selection is presented as an engineering decision made against the client's accuracy, latency and cost constraints rather than a fixed vendor allegiance, including multi-model routing.We start with your business problem and select the right mix — foundational models, fine-tuning, RAG, or custom ML — based on accuracy, latency, and…ztabs.co/ai ↗

Where you use it

In your pipeline

YesTheir engineers work inside your pipeline: automated suites are wired into GitHub Actions, GitLab CI or CircleCI so every pull request is gated, and CI/CD construction is a separate DevOps offering.Tests integrated into your pipeline for continuous feedback on every change.ztabs.co/services/qa-testing ↗

In a browser

PartlyThere is no hosted workspace for the service itself; the only self-serve web surface is a set of free browser tools and calculators published on ztabs.co, offered without professional guarantees.We offer free tools on our website (such as the Marketing Plan Generator and SEO Checker). These tools are provided "as is" for informational…ztabs.co/terms ↗

Whose machine it runs on

Self-hosted

YesSystems they build can be deployed into the client's own environment, including on-premise and VPC-hosted options aimed at regulated healthcare and finance buyers.Data residency controls, PII redaction in prompts, audit logging, role-based access, and on-premise or VPC-hosted deployments for healthcare,…ztabs.co/ai ↗

Open source

PartlyOnly one of their own products, the Beveled screenshot tool, is published as open source; the agency practice and its other products are not offered as source-available software.Open Source GitHubztabs.co/products ↗

What it costs to run

How it meters

YesBilling is per project or per developer-hour, not per seat or token: staff augmentation is quoted hourly by seniority while builds are quoted as fixed project ranges after scoping.Rates range from $35-$85/hour depending on seniority and specialization, with no hidden fees, no long-term contracts, and no recruitment charges.ztabs.co/services/staff-augmentation ↗

Free tier

PartlyYou can start without paying but not use anything without paying: scoping consultations and the on-site calculators are free, while any delivery work is a paid engagement.Every engagement begins with a free consultation to scope your requirements and provide a detailed estimate.ztabs.co/services/ai-agent-development ↗

Bring your own key

PartlyDeployments can run in your own cloud or on-premise and integrate whichever model providers you hold accounts with, but the site never states explicitly that clients supply their own API keys.LLM orchestration with LangChain and CrewAI, vector search with Pinecone, Weaviate, and pgvector, and integration with OpenAI, Anthropic, and…ztabs.co/ai ↗

Buying it for a team

A company can buy it

YesThe entire business is sold to organisations (startups, SaaS companies and enterprises), with engagements scoped by contract rather than individual self-serve signup.We work with startups building AI-powered MVPs, SaaS companies adding intelligent features to existing products, and enterprises modernizing legacy…ztabs.co ↗

Seat model

PartlyOnly the staff augmentation line is priced per person, scaling from one to twenty-plus developers month to month; no minimum seat count or ceiling is published for project engagements.Engagements are flexible — scale from 1 to 20+ developers, adjust monthly, and cancel anytime with 2 weeks notice.ztabs.co/services/staff-augmentation ↗

Admin controls

PartlyConstraints are engineered into each delivered system (role-based access, action confirmation, rate limits) rather than exposed as an admin console the buyer configures themselves.Input/output validation, content filtering, action confirmation, and rate limiting add $10K–$20K. Critical for production agents that take real-world…ztabs.co/cost/ai-agent-development ↗

Audit log

YesAudit logging is standard in what they build, named both in the AI security approach and as an enterprise deliverable alongside encryption and role-based access control.Security is built in from day one: role-based access control, audit logging, data encryption at rest and in transit, and compliance with SOC 2,…ztabs.co/services/enterprise-software ↗

Single sign-on

YesSSO and SCIM provisioning are described as wired into enterprise builds from day one, with SSO integration listed as an enterprise security deliverable.60+ enterprise-grade systems shipped across HRIS, billing, claims, and asset management — average deployment serves 500–10,000 named users with SOC…ztabs.co/services/enterprise-software ↗

Not established: Pooled budget

What happens to your code

Data residency

PartlyResidency is handled per build through on-premise or VPC deployment rather than published as a jurisdiction the vendor guarantees; the company itself operates from Houston, Texas.Data residency controls, PII redaction in prompts, audit logging, role-based access, and on-premise or VPC-hosted deployments for healthcare,…ztabs.co/ai ↗

Certifications

PartlyThey implement SOC 2, HIPAA and GDPR controls in client systems and describe architecture as SOC 2-aligned or SOC 2-ready, but publish no certification held by ZTABS itself.Guardrails, human-in-the-loop, observability, and SOC 2-ready architecture from day one.ztabs.co/services/ai-agent-development ↗

Not established: Opt out of training, Getting out