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See every thought, tool call, and error from your AI agents in real time. Instrument any agent in 2 lines of code. Works with OpenAI, Claude, LangChain, CrewAI, and more.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | nullstack.app | traceagently.com |
| Pricing | ||
| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Nullstack yet.
TraceAgently is an observability API for AI agents. Drop a few lines into any agent and get a real-time dashboard showing every thought, tool call, tool result, and error in the exact order they happened. The problem AI agents fail silently. Your logs show nothing useful. You have no idea if your...
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Nullstack yet.
Overall verdict
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Recommended for
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Full-stack with Nullstack - Part 3
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Nullstack and TraceAgently.
TraceAgently's answer:
Python and Node SDKs
TraceAgently's answer:
Most observability tools wrap your LLM calls. TraceAgently works with any agent loop you write yourself, not just supported frameworks. You instrument what matters and see it live.
TraceAgently's answer:
No framework lock-in, no SDK wrapping your entire stack. Works in 5 minutes and has a genuinely free tier.
TraceAgently's answer:
Developers building AI agents who need to debug what's happening inside the loop.
TraceAgently's answer:
Built it after shipping agents that worked in testing and broke in production with no useful logs to debug them.
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