Stacktrace
Stacktrace is a YC Fall 2026 (F26) company. Based in San Francisco, CA, USA. Team of 3.
About Stacktrace
Summary
Stacktrace builds observability and policy enforcement for AI agent fleets. Engineering and security teams use it to inspect every tool call an agent makes, trace which MCP server, plugin, or hook was responsible, and block or gate unapproved components before they run. It replaces manual review of agent logs and ad-hoc access controls with a continuous, policy-driven layer that fires real-time alerts into Slack or Claude Code while a session is still active.
Business model
A free Team plan covering up to 100 agents and 200 session-hours per month, with paid tiers above that.
Go-to-market
DevSecOps and engineering teams at companies running AI agents adopt Stacktrace through a self-serve cloud sign-up or a browser-based playground that requires no installation.
From the Y Combinator listing
See and control what your agents actually do
We’re building Stacktrace to help teams see what AI agents actually do, detect risky behavior, and alert the people responsible. Administrators can also deploy policies that block unapproved tools, such as MCP servers and plugins, before agents use them.
Facts
- B2B / B2B -> Security
- San Francisco, CA, USA
- 3
- Active
- Early
Founders (3)
- Prasanth Ganta
Score every batch against your own thesis
GPAgent's sourcing agent reads every company in a batch, scores each one against your fund's thesis in a private workspace, and lines up the founders worth meeting before Demo Day. You decide who to contact. Your scores, notes, and pipeline never appear on these pages.
How Accelerator intelligence works