Startup
Parallel Web Systems
Web infrastructure for AI to search, extract, monitor and reason over the world's information
Parallel offers Search, Extract, Task (deep research), FindAll (entity datasets), Monitor and Responses APIs, built on its own Parallel Web Index. Outputs can include citations, reasoning traces and calibrated confidence scores through its Basis framework. It ships Python and TypeScript SDKs and a Parallel Search MCP server, and works with LangChain and the Vercel AI SDK.
Neighbours in the directory
San Francisco, CA · Est. 2022
The data framework for connecting agents to your data.
LlamaIndex provides ingestion, indexing and retrieval primitives that give agents grounded context over enterprise data — a foundational piece of the retrieval side of the harness stack.
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.
Est. 2024
A registry and toolchain for MCP servers.
Smithery indexes and helps deploy MCP (Model Context Protocol) servers — a distribution layer for the tool ecosystem agents connect to.
Connections
Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.
Built on · 1
- Model Context ProtocolProject
Sources
Verified Oct 29, 2026