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Datacircle

Datacircle is a free, AI-agent-ready benchmark of GTM data APIs that scores 1,018 providers across 120 API types on price, accuracy and speed, with an MCP server and open API.

Pricing model
Free
Price start
Free

Description of Datacircle

Datacircle is a free, AI-agent-ready benchmark of GTM (go-to-market) data APIs, the APIs that sales, growth and data teams use for LinkedIn profiles, people and company enrichment, email finding and validation, phone lookup, company signals, social media, e-commerce and web data. It runs the same tests on every provider, so plans can be compared like for like, and lists each plan with its price per 1,000 results, rate limits, speed and the fields it returns. The sheet covers 1,018 providers across 120 kinds of API.

It is built for AI agents as well as people. Claude, ChatGPT and Cursor can connect to its MCP server and look up the best plan for a task, developers can query a keyless JSON API with an OpenAPI 3.1 spec, and every plan has its own page with an llms.txt file. Each plan gets an Overall score from price, accuracy, cost to get started, bundled calls and performance, with weights you can adjust. The whole sheet is free with no sign-up, downloadable as CSV, JSON or a zip under CC BY 4.0, and the CSV lists the source pages behind every row.

Datacircle GTM API benchmark sheet with plans ranked by overall score
Datacircle (screenshot of the official homepage)

Features of Datacircle

  1. Ready for AI agents: an MCP server for Claude, ChatGPT and Cursor, a keyless JSON API with an OpenAPI 3.1 spec, and an llms.txt file on every plan page.
  2. Like-for-like GTM API benchmark: plans from 1,018 providers across 120 API types, tested the same way and compared on price per 1,000 results, accuracy, speed, rate limits and returned fields.
  3. Adjustable scores and open data: an Overall score with weights you can change, filters on every column, and free CSV, JSON and zip downloads under CC BY 4.0.

Frequently asked questions

Is Datacircle free?

Yes. Anyone can read, filter and download the full sheet with no sign-up, and the API and MCP server need no key. The data is published under CC BY 4.0, so you can reuse it in your own work with credit to Datacircle.

How does Datacircle score API plans?

Each plan is scored out of 100: price 40, accuracy 40, cost to get started 10, bundled calls 10 and performance 10. Accuracy and performance come from Datacircle running the same tests on each provider's call, and you can change the weights in the sheet to match what matters to your team.

Can AI agents use Datacircle?

Yes, that is a core part of the product. Claude, ChatGPT, Cursor and other MCP clients can connect to the MCP server at api.datacircle.dev/mcp, developers can call the JSON API at api.datacircle.dev/v1, and each plan page has an llms.txt file, so an agent can pick a GTM API from tested data.

Website: https://datacircle.dev/

Company: Datacircle

Key facts

Datacircle is a free, AI-agent-ready benchmark of GTM data APIs: 1,018 providers tested the same way and scored on price, accuracy and speed, with an MCP server, a keyless API, llms.txt and open downloads.

Pricing model Free
Free tier Yes · Whole sheet, CSV/JSON downloads, API and MCP free with no sign-up or key; API 60 calls/min per IP. · no credit card required
Starting price Not verified
Data residency Not verified
Compliance (as stated by vendor) Not verified
Integrations Not verified
Public API Yes
Self-hostable Not verified
Official site Not verified
Can a general AI assistant replace it? Datacircle gives AI assistants tested, sourced GTM API pricing to work from: through its MCP server, Claude, ChatGPT or Cursor can look up the best-scoring plan for a task.
Last verified 2026-11-10 by editor

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Update history

  1. 2026-11-10 · ai alternative note updated (editor)
  2. 2026-11-10 · editor verdict updated (editor)
  3. 2026-11-10 · ai alternative note updated (editor)
  4. 2026-11-10 · editor verdict updated (editor)
  5. 2026-11-10 · api available updated (editor)
  6. 2026-11-10 · pricing page url updated (editor)
  7. 2026-11-10 · free tier updated (editor)
  8. 2026-11-10 · pricing model updated (editor)

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