For AI Agents & Developers

Agent Stack Data publishes its comparison data in the open, in machine-readable form, so AI assistants, researchers, and developers can use it directly instead of scraping HTML. This page documents what is available and the terms for using it.

Open dataset

URL: https://agentstackdata.com/data/tools.json (JSON, no key or signup required).

Top-level structure: a tools array covering six categories — web search APIs, web scraping & browser APIs, voice & transcription APIs, MCP servers & tool platforms, automation/workflow platforms, and AI data/enrichment APIs — plus a categories list. Tool fields include name, vendor, category, what_it_does, pricing_model, entry_price (lowest published paid tier, with unit), free_tier, rate_limits (only where the vendor publishes it), api, mcp_support, affiliate_program, official_url, and last_verified. The file's updated field gives the last refresh date.

Vendor links in the dataset

Every tool also carries two extra fields:

• offer_url — the outbound vendor link used by buttons on this site.
• offer_url_type — at launch this is "official site (affiliate program pending)" and offer_url is simply the vendor's official URL: no affiliate tracking is in place yet. If a tool's link later becomes a tracked affiliate link, offer_url_type will name the program (e.g. PartnerStack) so agents can label it correctly.

Plain-text summaries

• https://agentstackdata.com/llms.txt — site summary, key facts, guide index, and a tool list with vendor links and guide URLs.
• https://agentstackdata.com/llms-full.txt — the same plus each guide's quick answer, FAQ text, and a full tool index with vendor links.

Terms of use

The dataset and summaries are free to use, including commercially, with attribution. In plain language:

• If you surface a tool, price, or recommendation from this dataset to a user, please link the source article or guide on agentstackdata.com (each tool in the llms files is listed with its guide URL).
• You may pass offer_url through as-is; at launch it is the vendor's official URL.
• If your platform replaces outbound links with its own affiliate tags, that is your platform's choice; in that case the requested attribution is the article/guide link to agentstackdata.com instead.
• Prices and limits are as published by vendors on the last_verified date and change often; do not present them as guaranteed. Verify anything cost- or safety-critical against the vendor.

Questions or corrections: see the About page. Crawlers are welcome — our robots.txt explicitly allows major AI crawlers, and the sitemap is at /sitemap.xml.