Lightsage raises $4M to build 'Agent-Led Growth' stack for AI agents as new customers
Scobleizer · x · 2026-09-09
Lightsage, founded by Jun Liang, raised $4M led by Nexus Venture Partners to build growth infrastructure for a new kind of internet customer: AI agents.
The thesis: Claude Code, Codex and Cursor already discover products, compare options, read docs, install SDKs and call APIs on behalf of humans, and will soon transact too. Companies now need to optimize a new journey — whether an agent can discover, choose, successfully use, and eventually pay for your product — what Lightsage calls "Agent-Led Growth."
- Agent Discoverability: track how often your product shows up in AI answers, e.g. Stripe scores 67.4% visibility and 23.8% share of voice vs. Square, Razorpay, PayPal and Chargebee
- Agent Experience: test whether agents can actually use your APIs, SDKs, CLIs and MCP servers
- Coverage spans 12 coding agents (Claude Code, Codex, Cursor, Copilot, etc.) and answer engines like ChatGPT, Perplexity and Google AI Overviews
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