Xulux GTM brain

category

market profile

• text: Developer tool vendors can lose users when coding agents fail to integrate their products.
• text: Agent behavior can vary across models and harnesses, making continuing evaluation relevant as tools change.

personas

• title: Head of developer experience
  pains:

  • Cannot see where agents abandon product setup
  • Must keep documentation and integration paths usable across agent environments
• title: VP Engineering at a developer tool vendor
  pains:

  • Maintaining agent integration tests across models competes with product work
  • Regression failures may be missed by conventional tests
• title: Developer growth or product lead
  pains:

  • Acquisition can fail to convert when agent-led implementation breaks
  • Needs evidence connecting failed tasks to onboarding friction

icp

• text: Developer tool companies with APIs, SDKs or other surfaces that coding agents must discover and implement; no size threshold is public.
• text: Teams supporting multiple models and agent harnesses with ongoing releases are likely to benefit from repeatable evals.

message pillars

• text: Make developer tools ready for agent users.

objections

• objection: Our integration tests already pass.
  response: Test a real agent task across models and compare failure traces with the existing suite.
• objection: We do not know whether agent failures affect conversion.
  response: Pilot a representative onboarding task and measure completion and drop-off before expanding.

competitors

• name: Lightsage
  website: https://lightsage.com/resources/best-agent-testing-tools
  why: Runs coding agent evaluations on developer tool integration tasks.
• name: MCPJam
  why: Offers cross-client MCP evaluation and testing for agent tool use.
• name: Braintrust
  why: Offers broader AI evaluation tooling that teams can use to build their own tests.

influencers

• name: Joshua Chung
  url: https://luma.com/apify-agent-evals
  why: Xulux cofounder speaking on in-context learning evaluations.
• name: Vivek Shukla
  url: https://luma.com/apify-agent-evals
  why: Xulux cofounder speaking on agent evaluations.

keywords

• agent evals developer tools
• MCP server testing
• coding agent integration testing
• developer tool agent readiness
• agent onboarding conversion
• agent benchmark across models

voice

• Technical
• Concise
• Outcome-oriented

signals

• text: A devtool vendor launches an MCP server or agent-facing interface and needs cross-client testing.
• text: A team sees onboarding drop-off from agent-generated implementations or supports several models.

pricing

motion

channels

• Events

confidence

Founders

• name: Joshua Chung
  title: Founder/CTO
  role: CTO
  bio: Building Xulux, evals for in-context learning. Prepare your devtools for AI agents! Cofounder & CTO @ Xulux / Applied Mathematics @ UC Berkeley / Prev @ Polis.