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Thinkhard

Grades and rewrites AI prompts, flags machine-sounding phrases, lists facts to check in AI answers, and tests chatbot rules.

FreeActively maintained

AgentsEvaluationSecurityFree tier
thinkhard.si ↗
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Thinkhard: data, price, alternatives
At a glancechecked Oct 23, 2026

not read yet

Use

For
Anyone using ChatGPT, Claude or Gemini at work who wants free prompt-writing and checking tools
Price
Freepricing page, read Oct 28, 2026
Activity
Actively maintainedrelease 10 days ago · site updated 10 days ago
Used for
  • Write a prompt that gets better answers from an AI
  • Check an AI answer's facts before using it
  • Strip private details from text before pasting into AI
read off thinkhard.si on Oct 28, 2026
Worth knowingcomputed from what we read · each with its source
Pricingpricing page, read Oct 28, 2026

Free

pricing page

Your datawhat they publish, each line with its page · read Oct 28, 2026

“We do not sell personal data, share it for advertising, or use anything you give us to train AI models.”

trust center ↗

These are Thinkhard'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 28, 2026
  • MCP serversi.thinkhard/prompt-toolsverified in the MCP registry
  • Stateanswers, 5 toolschecked 2026-10-28
  • Address to connectthinkhard.si/mcp
  • API docsthinkhard.si/developersthe vendor's page ↗
  • MCP docsthinkhard.si/guides/mcp-servers-for-non-developersthe vendor's page ↗

MCP server details →

This card as JSON, for your agent →

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 Agentsby use, among tools still maintained

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

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Questions this page answers
  • What is Thinkhard?

    Grades and rewrites AI prompts, flags machine-sounding phrases, lists facts to check in AI answers, and tests chatbot rules. It is listed in the Atlas under Agents.

  • Who is Thinkhard for?

    Anyone using ChatGPT, Claude or Gemini at work who wants free prompt-writing and checking tools

  • How much does Thinkhard cost?

    Thinkhard is free, per its pricing page on 2026-10-28.

  • Is Thinkhard free?

    Yes: Thinkhard is free, per its pricing page on 2026-10-28.

  • Do people use Thinkhard?

    Little sign of use.

  • Is Thinkhard still maintained?

    Actively maintained: release 10 days ago · site updated 10 days ago.

  • Does Thinkhard train AI on your data?

    No, per its trust center (2026-10-28): “We do not sell personal data, share it for advertising, or use anything you give us to train AI models.”

  • Is Thinkhard safe?

    We do not audit vendors. What Thinkhard publishes, read 2026-10-28: SOC 2 Type II, ISO 27001, GDPR, CCPA stated on its trust center; on training with your data, “We do not sell personal data, share it for advertising, or use anything you give us to train AI models.”.

  • How do I cancel Thinkhard?

    In its own words (terms of service, 2026-10-28): “You can cancel from your account page at any time; you keep Pro until the end of the period you paid for.”

  • What are alternatives to Thinkhard?

    In Agents, by use: Chat Free AI, Geoa, Writingmate, Qu Review, AgentTune.

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