Agent skill

exa

Web research using Exa search via scripts. Provides web search, advanced filtered search, code context lookup, and URL content extraction. Use when researching topics, finding documentation, looking up code examples, or extracting webpage content. No API key required.

View SKILL.md on GitHub Repository
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Install this agent skill to your Project

npx add-skill https://github.com/roman-16/.nixos/tree/main/hosts/roman-nixos/modules/pi/skills/exa

SKILL.md

Exa

Web research via the free Exa MCP endpoint. All commands go through scripts/exa.sh. No API key required.

Commands

Search

General web search for any topic.

bash
./scripts/exa.sh search "NixOS flake best practices 2025"
./scripts/exa.sh search "home-manager modules" 15

Advanced Search

Full filter control: categories, date ranges, domains, highlights, summaries.

bash
./scripts/exa.sh search-advanced '{"query": "transformer attention efficiency", "category": "research paper", "startPublishedDate": "2024-01-01", "numResults": 15}'

Parameters:

  • query (required) — search query
  • numResults — 1-100 (default: 10)
  • type — auto (default), fast, neural
  • category — company, research paper, news, pdf, github, personal site, people, financial report
  • includeDomains / excludeDomains — domain filters
  • startPublishedDate / endPublishedDate — ISO 8601 date filters
  • startCrawlDate / endCrawlDate — crawl date filters
  • includeText / excludeText — text filters (single-item arrays only)
  • additionalQueries — query variations for broader coverage
  • enableSummary / summaryQuery — generate summaries
  • enableHighlights / highlightsQuery / highlightsNumSentences / highlightsPerUrl
  • subpages / subpageTarget — crawl subpages (1-10)
  • textMaxCharacters / contextMaxCharacters

Category filter restrictions:

  • company: no domain or date filters
  • people: no date/text/excludeDomains filters, only LinkedIn for includeDomains

More examples:

bash
# News with domain filter
./scripts/exa.sh search-advanced '{"query": "NixOS release", "category": "news", "includeDomains": ["nixos.org"], "numResults": 10}'

# GitHub repos
./scripts/exa.sh search-advanced '{"query": "home-manager flake modules", "category": "github", "numResults": 10}'

# With summaries and highlights
./scripts/exa.sh search-advanced '{"query": "Rust async runtime", "category": "personal site", "enableSummary": true, "enableHighlights": true, "numResults": 10}'

Code Context

Find code examples, API docs, library usage from GitHub, Stack Overflow, and docs.

bash
./scripts/exa.sh code-context "Nix builtins.readDir filter by file type"
./scripts/exa.sh code-context "React useState hook examples" 12

Query tips: include the programming language/framework and be specific.

Crawl

Extract full page content from known URLs. Supports batching.

bash
./scripts/exa.sh crawl '["https://nixos.wiki/wiki/Flakes"]'
./scripts/exa.sh crawl '["https://example.com", "https://example.org"]' 5000

Research Workflow

  1. Start with search or search-advanced for discovery
  2. Use code-context for programming-specific queries
  3. Follow up with crawl on promising URLs for full content
  4. Use additionalQueries or multiple searches with varied phrasing for coverage

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