Foglamp

What it does

Foglamp is an open source observability layer for AI agents, specifically built on the Vercel AI SDK. It provides visibility into every generateText / streamText call with just two lines of instrumentation. The platform tracks costs, latency, tokens, distributed traces, evals, and alerts. It offers per-agent and per-workflow breakdowns, showing metrics like request count, error rate, and p95 latency. Users can set threshold alerts on cost, latency, and error rate, and run evals on production traffic using code checks and LLM judges.

Who it is for

Foglamp is designed for developers and teams building AI agents with the Vercel AI SDK. It targets those who need to monitor and debug agent behavior in production, especially when dealing with multiple models (e.g., GPT, Claude, Gemini) and complex workflows. The tool is tailored for engineering teams that want to catch regressions in cost, latency, or output quality before they affect end users.

Why it matters

AI agents can be opaque: costs, latency, errors, and eval scores are often invisible until users complain. Foglamp addresses this by providing a centralized dashboard that surfaces these metrics in real time. The product claims to catch issues like a 10x cost regression within days of shipping. By offering distributed traces and per-span prompt/response details, it helps teams debug failures and optimize performance. The open source nature allows for customization and community contributions.

Launch signal

Foglamp launched on Product Hunt on the day of this profile creation. The Product Hunt page describes it as "the open source observability layer for AI agents built on the Vercel AI SDK." The launch tags include Open Source, Artificial Intelligence, and GitHub. The website includes a testimonial from the co-founder claiming the tool paid for itself in week one by catching a cost regression.

Brand and naming

The name 'Foglamp' cleverly plays on the metaphor of 'fog' (opacity, uncertainty) and 'lamp' (illumination, clarity), directly aligning with the tagline 'Ship AI agents you can actually see.' It suggests cutting through the fog of AI operations to provide visibility. The domain foglamp.dev is short, memorable, and the .dev TLD reinforces the developer-focused positioning. The name clearly positions the product as a monitoring and observability tool for AI agents, making the value proposition instantly understandable.