Reliable RPC APIs, dedicated nodes, indexing, staking, and AI support for Web3 teams building across 130+ blockchain networks
EU-resident inference API for open-weight language models
Stage
Established
MVP
Founded
2018
Not given
Based in
NZ
ES
Pricing model
Freemium
Contact for pricing
Pricing
Developer (Free): 400,000 RPC response units daily. Growth: $49/month ($31.85/month with 35% off first month) includes 20M RPC response units monthly, higher rate limits, additional units at $6/million. Accelerate: $249/month ($161.85/month with 35% off first month) includes 100M RPC response units
Not given
Key features
RPC APIs supporting 130+ blockchain networks
Dedicated node deployment and management
Industry-leading data indexing hosting
Trace API for application monitoring
Network prototyping tools for Substrate
AI-powered support agents for Discord and Telegram
API usage analytics dashboard
Archive node access with full chain history
Support for EVM, Substrate, Cosmos, Solana, and Bitcoin networks
OpenAI-compatible Responses and Chat Completions endpoints
Streaming with Server-Sent Events
Function calling and tool use
Structured JSON output with schema validation
Audio transcription with file and live WebSocket modes
Text-to-speech with built-in and customizable voices
Speech-to-speech translation
Time series forecasting up to 1,000 periods
Per-key usage tracking and limits
Servers owned and operated by NPAW in EU
What makes it different
Single platform for accessing 130+ blockchain networks without managing hardware
Built by developers for developers with infrastructure expertise
Free tier for development and testing with upgrade paths for production
Enterprise-grade reliability with 99.99% uptime support
Pay-as-you-go dedicated nodes and flexible infrastructure scaling
Data residency in EU with no US sub-processor in the data path
OpenAI-compatible API so teams can keep existing integrations
Three capability levels—Z Ultra, Z Pro, Z Fast—on the same API
Operated by NPAW, which has run its own data infrastructure since 2008
ISO 27001, ISO 27701, ISO 42001 and ENS High certified
OnFinality
Zarx