Developer Tools

Build faster. Ship with confidence.

Tools to help you design, test, and optimize your fill-request routing integration from day one.

Interactive
Route Tester
Submit a simulated fill request and see exactly what our routing engine returns — path selection, latency estimate, fill rate, and the selected edge endpoint.
RESPONSE 200 OK — ms simulated
Interactive
Latency Calculator
Select two regions to see the estimated round-trip routing latency based on our network topology.
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fill rate
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Utility
API Key Generator
Generate test-scoped API keys for your sandbox environment directly from the dashboard. Live keys are issued after account verification.
nfx_test_••••••••
Key scopes
nfx_test_ — Sandbox, free, unlimited
nfx_live_ — Production, plan quota applies
nfx_rk_   — Read-only analytics
Analytics
Fill Rate Analyzer
Monitor your per-region fill rates, latency percentiles, and route success metrics in real time. Exportable to any observability stack.
Last 24h fill rate by region
us-east-1
99.9%
eu-central-1
99.8%
ap-southeast
99.7%
sa-east-1
99.4%
af-south-1
98.9%
Download
OpenAPI Spec
Download the full OpenAPI 3.1 specification for the NetfillX API. Import into Postman, Insomnia, Stoplight, or any compatible toolchain.
netfillx-api-v1.json
OpenAPI 3.1 • 248 KB • v1.4.2
Download
Also available as
YAML Postman Collection Bruno
SDKs
SDK Downloads
Official client libraries with automatic retry, type definitions, and idiomatic interfaces for each language ecosystem.
Python
v2.1.0 • Python 3.8+
pip install netfillx
Node.js
v2.0.3 • Node 16+, ESM + CJS
npm install @netfillx/sdk
Go
v1.3.1 • Go 1.20+
go get github.com/netfillx/go-sdk
Ruby
v1.2.0 • Ruby 3.0+
gem install netfillx
Java
v1.1.2 • Java 11+, Maven/Gradle
Maven artifact
PHP
v1.0.4 • PHP 8.1+
composer require netfillx/sdk
All SDKs include automatic retry with exponential backoff, request idempotency, streaming support, and comprehensive type definitions. Source code is available at github.com/netfillx.