Available now

End hesitation.

Get a straight answer to a straight question.

No hedgingNo disclaimersNo overthinkingJust decideNo hedgingNo disclaimersNo overthinkingJust decide

Why decide?

A magic 8 ball that thinks.

Instant Answers

No overthinking. No context contamination. Just a clear yes or no to move you forward.

Save Energy

Stop wasting brainpower.

Fresh Start

No chat history bias.

End Paralysis

Break the analysis loop.

No Disclaimers

We commit. You act.

How it works

1

Ask

Type your question

2

Decide

AI commits instantly

3

Act

Move forward

Just decide.

The best answer is never maybe.

Try it now
MCP Servers

Decision tools for agents.

Deterministic MCP servers that give your AI agents clear, auditable answers.

Refund Notary

refund.decide.fyi
Live

Deterministic refund eligibility checker for US consumer subscriptions. Returns ALLOWED, DENIED, or UNKNOWN based on each vendor's official refund policy window.

64 vendors Stateless Updated daily Free / No auth
Visit GitHub

Cancel Notary

cancel.decide.fyi
Live

Cancellation penalty checker for US consumer subscriptions. Returns FREE_CANCEL, PENALTY, or LOCKED based on each vendor's cancellation terms.

64 vendors Stateless ETF detection Free / No auth
GitHub

Return Notary

return.decide.fyi
Live

Return eligibility checker for US consumer subscriptions. Returns RETURNABLE, EXPIRED, or NON_RETURNABLE with return type (full refund, prorated, credit) and method.

64 vendors Stateless Return method Free / No auth
GitHub

Trial Notary

trial.decide.fyi
Live

Free trial availability and terms checker for US consumer subscriptions. Returns TRIAL_AVAILABLE or NO_TRIAL with trial length, card requirement, and auto-conversion status.

64 vendors Stateless Card & auto-convert Free / No auth
GitHub

Connect your agent

Add decide notaries to any MCP-compatible client in seconds.

Claude Desktop / Cursor / Windsurf
{
  "mcpServers": {
    "refund-decide": {
      "url": "https://refund.decide.fyi/api/mcp"
    },
    "cancel-decide": {
      "url": "https://cancel.decide.fyi/api/mcp"
    },
    "return-decide": {
      "url": "https://return.decide.fyi/api/mcp"
    },
    "trial-decide": {
      "url": "https://trial.decide.fyi/api/mcp"
    }
  }
}
JSON-RPC — tools/call
curl -X POST https://refund.decide.fyi/api/mcp \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "refund_eligibility",
      "arguments": {
        "vendor": "adobe",
        "days_since_purchase": 12,
        "region": "US",
        "plan": "individual"
      }
    }
  }'
REST API
curl -X POST https://refund.decide.fyi/api/v1/refund/eligibility \
  -H "Content-Type: application/json" \
  -d '{"vendor":"spotify","days_since_purchase":5,"region":"US","plan":"individual"}'

Built for agents

No API keys. No databases. No side effects.

Deterministic

Same input, same output. Every time. Fully auditable decisions your agent can cite.

Stateless

No sessions, no tokens, no stored data. Pure function over HTTP.

MCP Native

JSON-RPC 2.0 over HTTP POST. Works with Claude Desktop, Cursor, and any MCP client.

64 Vendors

Adobe, Netflix, Spotify, Microsoft 365, and 60 more. Updated daily via automated checks.

Zero Config

No API keys, no auth, no sign-up. Point your agent at the endpoint and go.

Open Source

Full rules, policy sources, and server code on GitHub. Verify everything.

Ship decisions.

Give your agents the tools to stop hedging.

View on GitHub