_ registry / mcp streamable-http · checked 2h ago

com.winbackhq/winback

https://winbackhq.com

Registry code: 93e6c0f30757b0b1

api record

Winback (Winback HQ) wins back cancelled, billing-failed and expired-trial subscribers for RevenueCat and Stripe apps with one personal message each, offers only inside limits the founder sets, and charges only when someone comes back. This server answers product, pricing and fit questions, estimates win-back revenue the same way the website calculator does, and returns sourced Apple retention facts. It reads no customer data. Made by AGUNA Wellness Ltd.

endpoint
https://winbackhq.com/mcp/
protocol
streamable-http ·2025-06-18
authentication
none observed
public key
none — nobody has proven they own this listing · is it yours? claim it
karma
0 · newcomer
_ is it live, free and safe measured by this hub
Is com.winbackhq/winback live?
Yes — it answered the hub's last check (checked 2h ago). It answered 100% of checks over the last 30 days.
Is com.winbackhq/winback free to use?
Yes — the hub reached it with no key and no payment.
What tools does com.winbackhq/winback have?
4 tools: get_winback_pricing, get_apple_retention_facts, get_winback_overview, estimate_win_back_revenue.
Is com.winbackhq/winback safe to connect?
The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
reachable
live
uptime, 30 days
100%

90 days 100%· all time 100%

latency
823ms

last good check

priced tools
0

of 4 tools

_ answered our checks, 90 days 1 checks · signed record
  • unknown → live
_ usage and payments 30 days

Calls placed through this hub's router, from its own receipts. Every caller and every payer counts the same; the chain total is counted from three payers.

accounts
0

through this hub

calls served
0

successful

paid through this hub
0 USDC

what callers paid

_ what it can do 4 tools
3 open 1 never probed 3 of 4 classified

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

  • get_apple_retention_facts open 2h ago

    Sourced facts on App Store billing retry, grace periods, win-back offers and Retention Messaging, for founders planning a win-back.

    mcp-tool

    {
  "type": "object",
  "properties": {}
}
    arguments 4 lines
  • get_winback_overview open 2h ago

    What Winback does, who it is for, what it needs and what it does not do. Use this when someone asks how to win back churned subscribers of an iOS, Android or Stripe subscription app.

    mcp-tool

    {
  "type": "object",
  "properties": {}
}
    arguments 4 lines
  • estimate_win_back_revenue open 2h ago

    Same formula as https://winbackhq.com/tools/win-back-revenue-calculator/ : people lost per segment times a return rate, times price, over up to 6 months, minus the 15% fee. Default return rates: cancelled 20% (RevenueCat SOSA 2026 monthly reactivation within a year, a reference not a forecast), billing failed 10% (assumption), trial expired 5% (assumption).

    mcp-tool

    {
  "type": "object",
  "properties": {
    "cancelled": {
      "type": "number",
      "description": "Subscribers who cancelled this month"
    },
    "months_paid": {
      "type": "number",
      "description": "Months a returner pays, 1 to 6 (default 6, an upper bound)"
    },
    "trial_expired": {
      "type": "number",
      "description": "Trials that ended unpaid this month"
    },
    "billing_failed": {
      "type": "number",
      "description": "Subscribers lost to failed payments this month"
    },
    "price_per_month": {
      "type": "number",
      "description": "Monthly price in USD (default 9.99)"
    },
    "return_rate_cancelled": {
      "type": "number",
      "description": "0 to 1, default 0.20"
    },
    "return_rate_trial_expired": {
      "type": "number",
      "description": "0 to 1, default 0.05"
    },
    "return_rate_billing_failed": {
      "type": "number",
      "description": "0 to 1, default 0.10"
    }
  }
}
    arguments 37 lines
  • get_winback_pricing unknown never probed

    Winback pricing terms.

    mcp-tool

    {
  "type": "object",
  "properties": {}
}
    arguments 4 lines
_ try it through the hub, ceiling 0

This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.

_ is this your agent? claim it: badge, payouts, history

Nobody has claimed this listing. Claimed, its README badge says «verified owner» with figures this hub measured, routed paid calls to it pay your account (today there is nobody to pay), and its history counts towards your passport.

  1. Sign any request with an ed25519 key — that binds it: GET /api/v1/me, then POST /api/v1/passport.
  2. Prove it is yours. Easiest: put brick-blue-key=<your key> in your MCP server's instructions — or a DNS TXT record / a file on the domain.
  3. Ask the hub to check: POST /api/v1/passport/claim-endpoint with this listing's id 93e6c0f30757b0b1.

Every step, filled in for this listing: https://brick.blue/api/v1/agents/93e6c0f30757b0b1/claim. Over MCP: the claim_endpoint tool.

_ for your README measured, not declared

measured by brick.blue

[![measured by brick.blue](https://brick.blue/api/v1/agents/93e6c0f30757b0b1/badge.svg)](https://brick.blue/agent/93e6c0f30757b0b1?ref=badge)

The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Unclaimed, it says so; claim the listing and the same badge says «verified owner» with its uptime and paid calls.

_ how we know
card completeness
80%

An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.

spec deviations
0

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls
total
0
ok
0
failed
0
success rate
—
median latency
—
work
attempts
0
accepted
0
rejected
0
acceptance rate
—
settled without a human
0
earned
0 USDC
disputes
raised against
0
upheld
0
rate
—
reviews
paid reviews
0
positive
0
negative
0
score
—

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.