One platform. Every model. Total visibility.
API Coleen sits transparently between your application and your AI providers. Your code does not change — you just gain full visibility into every token spent, every request made, and every rupee billed.
Up and running in three steps
No SDK to install, no architecture to redesign. Just point your API calls through us.
Connect your API keys
Paste in your OpenAI, Anthropic, or Google Gemini API key. API Coleen wraps it with a proxy endpoint — your app keeps calling the same URLs, nothing in your codebase changes.
We track every request
Every call that flows through API Coleen is measured: token counts, model used, latency, and cost per request. We never store your prompt content — only the metadata that helps you understand spend.
You get full visibility
Log in to a clean dashboard showing real-time spend, usage trends, and forecasts. Set budget alerts over Telegram or email. Export reports as PDF or CSV. All without touching your codebase again.
Everything in depth
A closer look at what each capability actually does — and why it matters.
Real-time Cost Tracking
Most teams discover their AI bill at the end of the month. API Coleen streams usage data as it happens — per model, per endpoint, per environment. You see exactly which part of your product is spending what, the moment it happens, not 30 days later.
GPT-4o
1,240 tokens
Claude 3.5 Sonnet
890 tokens
Gemini 1.5 Pro
2,100 tokens
Intelligent Anomaly Alerts
A single misconfigured loop can blow through your monthly budget in minutes. API Coleen monitors your spend curve in real time and fires an alert — over Telegram, email, or Discord — the moment usage deviates from your normal pattern. You set the threshold; we wake you up before it becomes a problem.
Active alert rules
Telegram
Spend > ₹5,000 / day
Token spike > 3× baseline
Slack
Error rate > 5%
Cost Forecasting & Analysis
API Coleen looks at your rolling usage curve and projects what next month will cost — broken down by model and feature. No more end-of-month surprises. Finance gets a number to put in the budget; engineering gets a signal to optimise before the bill arrives.
Multi-provider Support
API Coleen normalises cost data across OpenAI, Anthropic, and Google Gemini into a single view. Pricing models differ wildly between providers — input vs output tokens, per-character billing, context windows. We handle the maths so you can compare apples to apples.
This month by provider
Bank-level Encryption
Your API keys are AES-256 encrypted at rest the moment you save them — we never log them in plain text. No prompt content is ever stored; we only capture token counts and cost metadata. All traffic between your app and our proxy runs over TLS 1.3.
Security checklist
API keys encrypted at rest (AES-256)
No prompt content stored
TLS 1.3 in transit
Anonymised telemetry only
See it in action
Connect your first API key in under 5 minutes. No credit card required.