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Average Ratings 0 Ratings

Total
ease
features
design
support

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Write a Review

Description

Skylight serves as an intelligent profiler specifically designed for Ruby and Rails applications, transforming performance metrics into practical insights that enable you to allocate less time to troubleshooting and more time to enhancements. It categorizes endpoints based on "agony," which is a unique combination of slowness and frequency of use, allowing you to identify which areas will yield the greatest returns on your optimization efforts. By examining our endpoint graphs, you can accurately locate where the slowdowns are happening, with the widest bars in these sequences indicating the events that require your attention most urgently. After making improvements to your code, you can easily redeploy your application, with deploys represented on the overview graph to give you a clear visual comparison of your changes. Additionally, you can analyze a histogram of response times to uncover infrequent slowdowns that may affect your overall averages. The tool also allows you to aggregate event sequences based on time or memory allocations, helping you to identify where bottlenecks may be occurring. This way, you can effectively pinpoint your slowest responses and refine your focus on the disparities between your fastest and slowest responses, ultimately leading to a better-performing application. By continuously monitoring and optimizing your application, you can ensure a smoother user experience and enhanced performance over time.

Description

Spanlens is an open-source observability platform licensed under MIT that enables developers to effectively track each interaction their applications have with services like OpenAI, Anthropic, Gemini, Mistral, OpenRouter, Azure OpenAI, or a local Ollama model. The integration process is incredibly simple, requiring just a single line of code to change the client's baseURL to the Spanlens proxy, or by executing "npx @spanlens/cli init," which prompts a wizard to automatically adjust your code. Once integrated, all requests are meticulously logged, capturing details such as the model used, token counts, latency, cost, and the complete prompt and response body, while also seamlessly reconstructing streaming responses. The accompanying dashboard transforms this raw log data into actionable operational insights. Cost tracking functionality allows users to break down expenditures by individual requests, models, and end users, while also distinguishing prompt-cache tokens to provide clarity on actual savings rather than simply the total costs. Additionally, agent tracing presents multi-step workflows visually, using Gantt waterfalls and node-and-edge graphs to emphasize the critical path, enabling developers to pinpoint the slowest dependencies in a fan-out scenario. This comprehensive approach not only enhances visibility but also empowers users to optimize their model interactions for better efficiency and cost management.

API Access

Has API No 

API Access

Has API No 

Screenshots View All

Screenshots View All

No images available

Integrations

Ruby Yes 
Ruby on Rails Yes 

Integrations

Ruby No 
Ruby on Rails No 

Pricing Details

$20 per month
Free Trial No 
Free Version Yes 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs No 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Skylight

Website

www.skylight.io

Vendor Details

Company Name

Spanlens

Founded

2026

Country

South Korea

Website

spanlens.io

Product Features

Application Performance Monitoring (APM)

Baseline Manager No 
Diagnostic Tools No 
Full Transaction Diagnostics No 
Performance Control No 
Resource Management No 
Root-Cause Diagnosis No 
Server Performance No 
Trace Individual Transactions No 

Product Features

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