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Knowledge tools for your agent.

Wikipedia, OpenAlex, Crossref, Open Library, the Wayback Machine and Open Food Facts: reference sources, all free per call.

7 tools6 providers7 active today

Give this to your agent
Help me look something up with Agentik. Ask for my question. Use discover_tools and inspect_tool to pick a reference tool, check access and confirm it is free before running it.
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Paste it into Claude, ChatGPT or Codex: your agent takes it from there, and shows the price before it runs.

What your agent does with it

  • Look up a topic with its references.
  • Find scholarly works and their DOIs.
  • Retrieve an archived version of a page.

The tools

  • Internet ArchiveArchived page lookupWayback Machine snapshotCheck whether a URL is archived in the Internet Archive Wayback Machine and get the closest snapshot URL and timestamp (optionally closest…wayback/availabilityFree
  • Open LibraryBook searchSearch books by title, author or keyword in Open Library (Internet Archive): work key, title, authors, first publication year, edition…open-library/searchFree
  • CrossrefDOI metadata searchSearch 160M+ Crossref records (journal articles, books, proceedings) by free text: DOI, title, authors, publication date, journal,…crossref/search-worksFree
  • Open Food FactsFood product by barcodeFood product facts for an EAN/UPC barcode: name, brand, quantity, categories, labels, Nutri-Score, NOVA group, Eco-Score, ingredients,…open-food-facts/productFree
  • OpenAlexScholarly works searchFull-text search over 250M+ scholarly works (papers, books, datasets): title, DOI, year, citations, open access status, authors with…openalex/search-worksFree
  • WikipediaWikipedia page summaryShort summary, description and thumbnail of an English Wikipedia article by title.wikipedia/page-summaryFree
  • WikipediaWikipedia searchFull-text search over English Wikipedia article titles and content.wikipedia/searchFree

Providers in this category

How it is billed

  • The provider’s price, 0% markup.
  • One prepaid balance for every provider; your agent sees the price before it runs.
  • Pay for measured usage; unused reservations are released.

Questions

Why is a workspace needed for free tools?

Every call goes through your key so your agent’s usage stays visible and capped, even when the tool costs nothing.

See also