Deepsearch API for AI.
Deepsearch API for AI. Exposed over MCP by the valyu mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.
Search and research APIs built for AI agents. Access web and proprietary data sources through Search, extract content from URLs, generate grounded answers, and run multi-step research with DeepResearch - all through a single SDK.
Everything the assistant can do here goes through one of these:
Search — Search across web and proprietary data sources with a single queryContents — Extract clean, structured content from URLs. Supports sync (1-10 URLs) and async (up to 50 URLs) modesAnswer — AI-generated answers grounded by Valyu's search. Supports streamingDeepResearch — Multi-step research agent that produces comprehensive reports with citationsBatch — await valyu.batch.addTasks(batch.batch_id, { tasks: [ { query: "Analyze recent SPAC performance" }, { query: "Review semiconductor supply chainWorkflows — Templated DeepResearch starting points - curated by Valyu or created by your org - with typed {variable} placeholders and version historyThe server ships on npm as valyu-js, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.
You will need one environment variable: VALYU_API_KEY. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Valyu's toolset — Search, Contents, Answer and 3 more — is a fair guide to whether it matches your workflow. It is maintained by GitHub Actions; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| Search | Search across web and proprietary data sources with a single query. |
| Contents | Extract clean, structured content from URLs. Supports sync (1-10 URLs) and async (up to 50 URLs) modes. |
| Answer | AI-generated answers grounded by Valyu's search. Supports streaming. |
| DeepResearch | Multi-step research agent that produces comprehensive reports with citations. |
| Batch | await valyu.batch.addTasks(batch.batch_id, { tasks: [ { query: "Analyze recent SPAC performance" }, { query: "Review semiconductor supply chain trends" }, ], }); |
| Workflows | Templated DeepResearch starting points - curated by Valyu or created by your org - with typed {variable} placeholders and version history. |
{
"mcpServers": {
"valyu": {
"command": "npx",
"args": ["-y", "valyu-js"],
"env": {
"VALYU_API_KEY": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| VALYU_API_KEY | Credential the server authenticates with. | Yes |
Kill hallucinated APIs — version-accurate, up-to-date library documentation injected straight into context.
Microsoft's official browser automation server — drive a real browser through the accessibility tree, no screenshots needed.
GitHub's official server — repos, issues, pull requests, Actions and code security, straight from your assistant.
Issue tracking at the speed of conversation — Linear's official hosted server with OAuth and zero install.
Local repository surgery — status, diffs, commits, branches and history for any repo on disk.
Timezone sanity for AI — current time anywhere and correct conversions, without the model doing date math.