VZU Prompts .
Production system prompts, agent blueprints.
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Capability
VZU Prompts
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Category
review
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Runtime
NetWit Agentic OS
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Deploy
Cloud · Hybrid · On-prem
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12
Engineers
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50+
Shipped products
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5
Regions
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1
Runtime
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VZU Prompts is the review capability in the VZU family — production system prompts, agent blueprints. Operated by Virtual Zero Unbound Inc. (Vancouver), Plex Dubai (MENA), and Wahix (India). Ships on the NetWit Agentic OS runtime. SOC 2, HIPAA, ISO 27001 posture. Audit trail by default. RBAC at the agent level.
The position
Prompts that ship.
VZU Prompts is the production-system-prompt and agent-blueprint practice. The prompt is the contract. The prompt is the work. The prompt is the thing that runs in production at 3am when the operator is asleep. We write prompts that are auditable, version-controlled, and tested against real inputs.
We do system prompts. We do agent blueprints. We do prompt A/B testing. We do prompt regression testing. We do prompt observability. The output is a versioned prompt, a test suite, a regression baseline, and a dashboard. The dashboard shows the operator how the prompt is performing in production. The prompt is the work.
VZU Prompts engineers are senior. They have shipped production prompts at scale. They know the failure modes. They know the prompt patterns that fail under load. They know when to use a CoT, when to use a ReAct, when to use a tool call. They know when the prompt is the right place to fix the problem and when the model is the right place. The prompt is the work. The prompt is the contract.
The practice, in pictures
Three things we get right, every time.
Production The proof
Voice Agently voice prompts. Production system prompts.
Production system prompts for the Voice Agently voice agent platform, including a CoT for inbound calls, a ReAct for outbound, and a tool-call definition for the booking flow. Tested against 10,000+ real calls. Built by VZU Prompts in 6 weeks.
- → Production system prompt for inbound voice calls
- → ReAct agent for outbound campaigns
- → Tool-call definitions for the booking flow
- → Regression test suite against 10,000+ real calls
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6
Weeks to ship
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10,000+
Test calls
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30+
Languages
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94%
Intent accuracy
The engagement
How we work, end to end.
- Output
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Versioned prompt + test suite
Every prompt is a file. Every file is in git. Every change has a diff. Every diff has a test.
- Testing
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Regression against real calls
A test suite of 10,000+ real calls. Every prompt change runs the suite. Accuracy is a number.
- Observability
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Dashboard + trace
Every call is logged. Every prompt is traced. The operator sees the prompt performance in production.
- Patterns
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CoT, ReAct, tool-call
Right tool for the brief. We know when each one works. We know when each one fails.
- Models
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Anthropic + OpenAI + Mistral
Model-agnostic. We pick the right model for the brief. We don't pick the model that's familiar.
The VZU Prompts practice
The work, in motion.
Every brief becomes a working product in days. Every product is engineered for the long term — clean architecture, real audit trails, real operators in the loop. The VZU Prompts practice at VZU is built on senior engineering, the NetWit runtime, and a refusal to ship anything we wouldn't put on a public domain.
The VZU family