Free
Free
Higher limits, an API key, saved lists and alerts
Usage
Query rate120 calls per minute, 5000 per day
API keys1
Call history kept30 days
Saved datasets50
Change alerts10
Tools
Batch list check10
Plans
Plans compared
Pro
$120/ year
Founding members $69 / year. First 100 members; the renewal price stays the same.
More headroom for individuals and small teams
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Usage
Query rateUnlimited (fair use)
API keys5
Call history kept180 days
Saved datasetsNo limit
Change alertsNo limit
Tools
Batch list check200
Ultra
$490/ year
The highest limits and the largest batches
Usage
Query rateUnlimited (fair use)
API keys20
Call history kept365 days
Saved datasetsNo limit
Change alertsNo limit
Tools
Batch list check2,000
No sign-up needed to call the database, up to 20 calls per minute
Full refund within 14 days of activation if you have not used the membership benefits.
Call definition
A call is one machine read of the Mdexa database content: one request to a data endpoint of the HTTP API, one MCP tool call that queries the database (search_datasets, get_card, get_license_evidence, list_facets, get_access, find_similar_datasets, batch_check, check_changes), or one download of a dataset's .json or .md file (including a dataset page fetched with Accept: text/markdown) or of the whole-database file catalog.json. One request counts once. Web pages for people (HTML and their styles, scripts and images), the explanatory files llms.txt, llms-full.txt and agents.md, the sitemap, the feed and robots.txt, sign-in and account requests, session checks, MCP initialize and tools/list, and health checks are not calls and never use the call quota. Only a query that was actually executed counts: a rejected request (invalid parameters, more than 50 slugs, an unknown dataset, a missing or invalid key, a tool that returns an error, or search_content while it is not open) does not use the call quota; rejected requests have their own abuse limit. FAQ