Exa Search MCP — Use Cases, Install & Live Demo

Why use it

Key features

Neural search — find pages by similarity to a description, not just keyword match
Returns full page content with text and optional highlights
Specialized search modes: company, LinkedIn, GitHub, research-paper, news
Date filtering and domain include/exclude
Server-side answers (exa_answer) for one-shot Q&A with citations

Live Demo

What it looks like in practice

exa-search.replay ▶ ready

0/0

Install

Pick your client

~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "exa-search": {
      "command": "npx",
      "args": [
        "-y",
        "exa-mcp-server"
      ]
    }
  }
}

Open Claude Desktop → Settings → Developer → Edit Config. Restart after saving.

~/.cursor/mcp.json · .cursor/mcp.json

{
  "mcpServers": {
    "exa-search": {
      "command": "npx",
      "args": [
        "-y",
        "exa-mcp-server"
      ]
    }
  }
}

Cursor uses the same mcpServers schema as Claude Desktop. Project config wins over global.

VS Code → Cline → MCP Servers → Edit

{
  "mcpServers": {
    "exa-search": {
      "command": "npx",
      "args": [
        "-y",
        "exa-mcp-server"
      ]
    }
  }
}

Click the MCP Servers icon in the Cline sidebar, then "Edit Configuration".

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "exa-search": {
      "command": "npx",
      "args": [
        "-y",
        "exa-mcp-server"
      ]
    }
  }
}

Same shape as Claude Desktop. Restart Windsurf to pick up changes.

~/.continue/config.json

{
  "mcpServers": [
    {
      "name": "exa-search",
      "command": "npx",
      "args": [
        "-y",
        "exa-mcp-server"
      ]
    }
  ]
}

Continue uses an array of server objects rather than a map.

~/.config/zed/settings.json

{
  "context_servers": {
    "exa-search": {
      "command": {
        "path": "npx",
        "args": [
          "-y",
          "exa-mcp-server"
        ]
      }
    }
  }
}

Add to context_servers. Zed hot-reloads on save.

claude mcp add exa-search -- npx -y exa-mcp-server

One-liner. Verify with claude mcp list. Remove with claude mcp remove.

Use Cases

Real-world ways to use Exa Search

Find articles similar to one you already love

👤 Researchers, writers, founders building reading lists ⏱ ~10 min beginner

When to use: You have one canonical essay/post on a topic and want more like it. Google's 'related' is useless.

Prerequisites

Exa API key — exa.ai/dashboard — free tier gives ~1000 searches/month

Flow

Use neural mode with a descriptive query

Find 10 essays similar in spirit to 'The Bitter Lesson' by Rich Sutton. I want long-form opinion pieces about ML scaling, not papers.✓ Copied

→ 10 results that match the *vibe*, not just the keywords
Pull contents and skim

For each, fetch the contents (text mode) and give me a 2-line summary plus a 'why this is similar' note.✓ Copied

→ Per-result summary + similarity reason
Save the keepers

I want to actually read 3 of these. Which 3 are the highest signal? Save links to /reading/ml-scaling.md.✓ Copied

→ Curated short list, not all 10

Outcome: A reading list with real intellectual coherence, not SEO chaff.

Pitfalls

Neural search drifts into adjacent topics — Combine with includeDomains to constrain (e.g. only essays.gwern.net, lesswrong.com) when you want a tight cluster
Some pages return paywalled previews as content — Check the content length; very short returns are usually paywalled — flag and skip

Combine with: filesystem · memory

Pull a 1-pager on a company before a sales call

👤 Sales, BD, recruiters ⏱ ~10 min beginner

When to use: Call in 20 minutes; you need recent news, key people, recent funding, in one shot.

Flow

Run a company-mode search

Use Exa's company mode for 'Acme Robotics, San Francisco'. Pull homepage, recent news (last 90 days), and any announcements.✓ Copied

→ Mix of homepage content, blog posts, news articles
Synthesize a brief

Write a 1-pager: what they do, recent milestones, key people mentioned in news, anything I should congratulate or commiserate about.✓ Copied

→ Talking-point ready brief with cites
Find the right contact angle

Based on their recent news, what's a credible reason to reach out to them this week? Be specific — name the news item.✓ Copied

→ One concrete hook tied to a real recent event

Outcome: A briefing more useful than 30 minutes of LinkedIn stalking.

Pitfalls

Press-release noise drowns real news — Filter excludeDomains: ['prnewswire.com', 'businesswire.com'] for actual analysis

Combine with: memory

Find recent papers on a topic without Google Scholar's noise

👤 Researchers, ML/CS engineers staying current ⏱ ~15 min intermediate

When to use: You want recent papers on a topic (e.g. 'speculative decoding for diffusion models') without arXiv's listing UI.

Flow

Search papers since a date

Use Exa research-paper mode: papers about 'speculative decoding for diffusion models' published since 2026-01-01. Top 10.✓ Copied

→ List of papers with arxiv/openreview links and abstracts
Cluster by approach

Group these by their core technique. Which approaches are gaining traction, which are one-offs?✓ Copied

→ Thematic clustering with judgment
Pick 3 to read in detail

Which 3 should I prioritize for actually reading? Justify based on novelty + practical relevance.✓ Copied

→ Curated short list with reasons

Outcome: A read list shorter and better than what Twitter would give you.

Pitfalls

Mode 'research-paper' may miss workshop papers and very-recent preprints — Cross-check with arXiv listing for the past month if you need exhaustive coverage

Combine with: memory · fetch

Get a cited one-shot answer to a factual question

👤 Anyone who needs a quick fact with a source ⏱ ~2 min beginner

When to use: You need an answer + citation for a specific factual question, faster than search → click → read.

Flow

Use exa_answer

Use exa_answer for: 'What was Anthropic's last announced funding round and total raised?'✓ Copied

→ Direct answer plus 1-3 source URLs
Verify the source

Open the top source and confirm the number matches what Exa returned.✓ Copied

→ Confirmation or correction

Outcome: A factually-supported answer in under 30 seconds.

Pitfalls

Answers can lag (training/index cutoff) — For things that change weekly (stock price, leadership), verify the freshness of the sources, not just the answer

Combinations

Pair with other MCPs for X10 leverage

exa-search + memory

Save research findings to a topic graph as you go

Search for 'state of small LMs in 2026'. For each useful result, store the key claim as an observation on the 'small-lms-2026' entity in memory, with the source URL.✓ Copied

exa-search + filesystem

Build a reading list saved as Markdown

Find 10 essays similar to 'The Bitter Lesson'. Save the curated short list (top 3) with summaries to /reading/ml-scaling.md.✓ Copied

exa-search + github

Discover relevant repos via Exa, then operate on them via GitHub MCP

Use Exa to find Rust implementations of WebGPU shaders. For the top 3 repos, get the GitHub stats (stars, last commit) via the GitHub MCP.✓ Copied

Tools

What this MCP exposes

Tool	Inputs	When to call	Cost
web_search_exa	query: str, numResults?: int, type?: 'neural'\|'keyword'\|'auto', includeDomains?: str[], excludeDomains?: str[], startPublishedDate?: str, endPublishedDate?: str	General-purpose neural or keyword search	1 Exa search credit
company_research_exa	query: str, numResults?	Pull a company brief from public web sources	1 credit
linkedin_search_exa	query: str, numResults?	Find specific people/companies on LinkedIn (links only — content varies)	1 credit
github_search_exa	query: str, numResults?	Discover repos by description (use github MCP for actual repo ops)	1 credit
research_paper_search_exa	query: str, numResults?, dateRange?	Academic search across arXiv, OpenReview, etc.	1 credit
deep_researcher_start / check	query: str (start), task_id (check)	Big multi-source research tasks; poll for results	multiple credits
exa_answer	query: str	Direct Q&A with cited sources	1+ credits
crawling_exa	url: str	Fetch a single URL via Exa's pipeline (boilerplate stripped, JS rendered)	1 credit

Cost & Limits

What this costs to run

API quota: Free tier ~1000 searches/month; paid plans scale up
Tokens per call: Search results with content can be 2-10k tokens per result — cap numResults aggressively
Monetary: Free tier suffices for personal use; paid plans from $10/mo
Tip: Use numResults: 5 by default. Use text: false if you only need links, then call crawling_exa only on the few you actually want to read.

Security

Permissions, secrets, blast radius

Credential storage: API key in env var EXA_API_KEY

Data egress: Queries hit api.exa.ai; Exa fetches pages on your behalf via their infrastructure

Returned page content may include prompt-injection text. Treat web content as untrusted input.
Sensitive queries (your unreleased product name, secrets) go to Exa servers — be deliberate about what you search.

Troubleshooting

Common errors and fixes

401 Unauthorized

API key missing or wrong. Set EXA_API_KEY in MCP client env. Verify at exa.ai/dashboard.

402 Payment Required / quota exhausted

Free tier credits used. Upgrade or wait for monthly reset.

Results are off-topic with neural mode

Try type: 'keyword' for literal matching, or add includeDomains/excludeDomains to focus the search.

Empty content on returned URLs

Some pages can't be extracted. Use crawling_exa directly on the URL, or fall back to fetch/firecrawl.

Alternatives

Exa Search vs others

Alternative	When to use it instead	Tradeoff
Brave Search MCP	You want plain keyword web search with privacy guarantees	No semantic mode; results are SERP-style snippets, not full content
Firecrawl	You already have URLs and need clean content/structured extraction, not search	Different tool — scraping vs search
Tavily / Perplexity APIs (via custom MCP)	You want a different search-with-LLM-answer provider	Tavily is search+answer focused; Exa is broader (search/research/answer)

More

Resources

📖 Read the official README on GitHub

🐙 Browse open issues

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