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Nullary

Searches a citable archive of failed drug compounds, terminated trials and failed screens, served through an MCP server or REST API.

Free plan · From $49/mo

HealthSearchFree tier
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At a glanceswept Oct 21, 2026

not read yet

Use

For
Drug discovery researchers and teams who want structured failed-experiment data before starting new work
Price
Free plan · From $49/mopricing page, read Oct 23, 2026Trial & discounts: save 40% yearly
Runs as
API
Used for
  • Search failed compounds and terminated trials by target
  • Check whether a target's inhibitors previously failed
  • Review failed CRISPR screens before repeating experiments
read off nullary.ai on Oct 23, 2026
Worth knowingcomputed from what we read · each with its source
Pricingpricing page, read Oct 23, 2026

Free plan · From $49/mo

Trial & discounts save 40% yearly

pricing page

Your datawhat they publish, each line with its page · read Oct 23, 2026

These are Nullary's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read Oct 23, 2026
  • MCP serverai.nullary/nullaryverified in the MCP registry
  • Stateanswers, 35 toolschecked 2026-10-23
  • Address to connectmcp.nullary.ai/mcp
  • MCP docsnullary.ai/docs/mcp-installthe vendor's page ↗

MCP server details →

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Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Healthby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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Questions this page answers
  • What is Nullary?

    Searches a citable archive of failed drug compounds, terminated trials and failed screens, served through an MCP server or REST API. It is listed in the Atlas under Health.

  • Who is Nullary for?

    Drug discovery researchers and teams who want structured failed-experiment data before starting new work

  • How much does Nullary cost?

    Nullary has a free plan; paid plans start at $49/mo, per its pricing page on 2026-10-23.

  • Is Nullary free?

    Yes, Nullary has a free plan, per its pricing page on 2026-10-23.

  • Do people use Nullary?

    Little sign of use.

  • Is Nullary safe?

    We do not audit vendors. What Nullary publishes, read 2026-10-23: HIPAA, GDPR stated on its security page.

  • Is Nullary HIPAA compliant?

    Nullary states HIPAA compliance on its security page (2026-10-23). We have not verified it.

  • What are alternatives to Nullary?

    In Health, by use: Nursing Home Ratings, Owners & Staffing, Wounded Warriors, FindSaunaPlunge, supp.fit, FineRx, DRG System Deutschland.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk