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Larger

See who's using any tech stack

Data & Discovery
For AI agents
MCPAPINative readiness
About

What is Larger

Larger.io scans and catalogs the technology stacks running across millions of websites, letting you pick any technology and pull a filtered, exportable list of sites that use it. It's built for developers and GTM engineers at solo operations or small teams who need to understand the competitive or prospecting landscape by tech stack. The standout capability is the ability to export website lists filtered by technology and popularity — turning a passive lookup into a usable dataset. Pricing is not publicly listed, so budget planning requires direct contact, which adds friction for teams that want to self-serve quickly. The platform also bundles unrelated free tools like chess analysis and encrypted notes, which signals it's still finding its product focus.

Data & Discovery
Capabilities

Key features

Tech-stack lookup

detects which tools a target company uses

Our verdict

Vanderbuild take

For developers and GTM engineers who need to build prospect lists or do competitive research by tech stack, Larger.io is a focused Technology Lookup tool that does one thing clearly: show you who's running what. The agentic story here is real — with native MCP server support and a public API, this slots directly into an AI agent workflow as a callable data source, no scraping or workarounds needed. Pricing is undisclosed publicly, so we can't assess cost risk, which is a genuine friction point for early-stage teams trying to evaluate fit before a sales call. The bundled side tools (chess, encrypted notes) are a distraction and suggest the product roadmap isn't fully locked in yet — something to watch if you're betting on this as a long-term data layer.

Mateusz Sekta
Founder, vanderbuild
Learn more

Our Resources

The wedge

Agentic stack profile

MCP server
Yes

Live MCP server — agents can call this tool directly.

Larger.io data, including domains and web technologies, can be accessed via the Model Context Protocol (MCP) for use with AI assistants like Claude and Cursor.

Open MCP →
API
REST

Programmatic access available.

REST API — straightforward to call from any agent or workflow tool. Rate limits and auth vary by plan.

API docs →
Agentic readiness
Native

Built for agents from the ground up.

MCP server + agent-friendly API + at least one autonomous workflow out of the box. The bar for 'Native' is high — only a handful of tools currently qualify.

Stack role
Enricher

Where this tool slots into an agentic pipeline.

Plays the role of Enricher in an agentic pipeline. Use it to add firmographic, technographic, and signal data to a lead row on the fly.

Compare

Larger alternatives

Tools that solve a similar problem — compared at a glance.

Larger(this tool)
Best for
GTM Engineer
Readiness
Native
MCP
Yes
API
REST
Builtwith
Pricing
Freemium
Budget
$$$
Best for
SDR / BDR, RevOps
Readiness
Native
MCP
Yes
API
REST
NerdyData
Pricing
Freemium
Budget
$$$
Best for
SDR / BDR, Marketing
Readiness
Native
MCP
Yes
API
REST
Answers

Frequently asked questions

Does Larger have an MCP server?

Yes — Larger exposes a Model Context Protocol server. Larger.io data, including domains and web technologies, can be accessed via the Model Context Protocol (MCP) for use with AI assistants like Claude and Cursor. See the MCP docs at https://larger.io/developers.

Does Larger have a public API?

Yes — Larger ships a REST API. Docs: https://larger.io/developers.

Who is Larger best for?

Larger is built for GTM Engineer. Fits Solo, SMB (1-50)-sized teams.

How well does Larger fit an agentic sales stack?

Tier: Native. Has both an MCP server and an agent-friendly API — drops into an agentic stack with minimal glue code.