AI Apps That Work free tools

Connect Remote server

claude mcp add --transport http tools https://aiappsthatwork.com/mcp

{
  "mcpServers": {
    "tools": {
      "url": "https://aiappsthatwork.com/mcp"
    }
  }
}

{
  "servers": {
    "tools": {
      "type": "http",
      "url": "https://aiappsthatwork.com/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://aiappsthatwork.com/mcp

Tools 8 found in our last check

• real_cost_per_result

  Prices the AI steps behind one request from current list prices (LLM tokens, images, video seconds or a fixed amount) and returns the cost per request, the real cost per result that worked first time (cost per request divided by the worked-first-time share), the monthly spend wa…

• model_switch_cost

  Compares two priced LLMs on six common task shapes (support answer, invoice extraction, lead scoring, email draft, translation, search re-ranking). Returns list prices, cost per 1,000 requests on each model, the cost ratio, the break-even (how often the new model's results must…

• model_prices

  Looks up list prices for LLMs (USD per million input, output and cached input tokens, and context size), image models (USD per image by quality and size) and video models (USD per second by resolution), with each price's source page, the date prices were checked and any announce…

• model_shutdowns

  Lists announced API shutdown dates for AI models from OpenAI, Anthropic, Google and other providers, with days left, the suggested replacement, the source page, and links to a cost comparison and a side-by-side test of the replacement where this site has them.

• ab_test_sample_size

  Returns how many results each version of a prompt or model needs before a difference in how often results work first time is statistically real (two-proportion z-test, two-sided), the total across both versions, and how many days that takes at a given daily volume.

• judge_agreement

  Compares a person's verdicts with an AI judge's verdicts on the same results. Returns the agreement rate, Cohen's kappa with confidence intervals, precision and recall per verdict, the agreement of a judge that always gives the most common verdict, a trust verdict (kappa 0.6 or…

• build_judge_prompt

  Builds a pass/fail LLM-as-a-judge prompt for one kind of AI step (make, answer, transform, extract, judge, find, predict, plan, act or learn). Returns the prompt with {{input}} and {{result}} placeholders, numbered pass conditions (the block's starter conditions unless you send…

• launch_checklist

  The 20 AI-specific launch checks for an AI app (spending caps, rate limits, server-side keys, credit charging, version tags, records of which results worked first time, real cost per result, switching models safely). Returns the checks not yet done, each with why it matters and…

Details

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• Chronary

  Calendar API for AI agents: events, availability, Google/Microsoft setup, scheduling, and iCal.

• Mastering

  Audio mastering for AI agents: LUFS analysis, Suno artifact cleanup, free daily master.

• Modulos AI Governance Platform

  Evaluate Modulos (EU AI Act, ISO 42001, NIST AI RMF): capabilities, trust, comparisons. Book a demo.

• naulon

  Check citations and retractions by DOI, and see the x402 price an AI agent pays to cite a source.

• NextConstraint

  Your SaaS funnel's costliest leak, its fix, watchdog alerts and verdicts, from NextConstraint.