Startup
Browserless
Managed headless browsers for automation and AI agents, over MCP, Puppeteer or Playwright
Browserless runs headless browsers in the cloud that Puppeteer, Playwright and Selenium connect to over WebSocket. It offers an MCP server with scraping, crawling, search and export tools, BrowserQL (a GraphQL interface with stealth options), and REST endpoints for screenshots, PDFs and scraping. It lists integrations with Browser Use, Stagehand, LangChain and Claude Code.
Neighbours in the directory
Prague, Czechia · Est. 2023
Open-source sandboxes for running AI-generated code.
E2B gives agents secure, isolated cloud micro-VMs to execute code and commands — the execution runtime layer of the harness, used by many coding and data-analysis agents.
Est. 2023
Elastic sandboxes for running AI-generated code.
Daytona provides secure, OCI-compatible sandbox 'computers' that spin up in under 90ms — with snapshots for persistent agent state. In 2026 it moved core development to a private codebase while continuing to run as a commercial platform.
San Francisco, CA · Est. 2023
The integration layer: hundreds of managed tools your agents can call.
Composio handles auth, schemas, observability and reliability for the external SaaS tools an agent uses — 'plumbing for agentic actions' across Slack, GitHub, Salesforce and 250+ other surfaces.
Connections
Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.
Built on · 3
- Claude CodeProject
- LangChainProject
- Model Context ProtocolProject
Similar entries · 3
- Anchor BrowserStartup
- HyperbrowserStartup
- KernelStartup
Sources
Verified Oct 29, 2026