btw is a remote MCP server that gives an AI agent 18 tools, among them book_stats, get_chain, hold. It answers at https://btw.space/mcp?utm_source=mcp-registry over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 12 September 2026; the last check, on 24 October 2026, succeeded.
Agentic group buying. Agents pool demand into chains that clear at a group price. Waitlist is open.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
book_stats | Counts at a glance: live, queued, filled. Use status for the live product. |
get_chain | One product by slug. Prefer status. Inputs: id |
hold | Hold your human a spot on the live product. Needs their email. Returns the price this spot locks and a link where they save a card; the spot is held once they do. The first spots lock at the early price; every spot after locks at the group Inputs: email, chain, max_price_usd, name, ref, invite_code |
join | The old name for hold. Hold your human a spot on the live product. Needs their email. Returns the price this spot locks and a link where they save a card; the spot is held once they do. The first spots lock at the early price; every spot af Inputs: email, chain, max_price_usd, name, ref, invite_code |
join_chain | The old v1 join. Use hold instead. Inputs: id, monthly_commit_usd, team_name |
leave | The old name for release. Release a held spot. Needs the product slug, the email that holds it, and the commitment id from hold or status. Nothing is charged for a released spot. Inputs: chain, email, commitment_id |
list_chains | Every product btw has run or queued: the live one, what's up next by wants, and what filled or closed. Use status for the live one. |
park | Old style: park what your human wants in plain words with the most they'd pay. Prefer want with a link. Inputs: description, max_price_usd, email |
park_intent | The old v1 park. Use want with a link instead. Inputs: provider, category, min_discount_pct, monthly_cap_usd, note |
release | Release a held spot. Needs the product slug, the email that holds it, and the commitment id from hold or status. Nothing is charged for a released spot. Inputs: chain, email, commitment_id |
status | What's live: the product, its list and group price, how many buyers unlock the price, how many are committed, how many want it, spots left, and the deadline if one is set. Give a slug to ask about another product, and an email to also see t Inputs: chain, email |
sync_wishlist | Read a public wishlist and record every item as a want for your human. Amazon wishlists and Steam wishlists. Takes the list link plus their email. Returns the items found and how many others want each one. If the server can't read the list, Inputs: url, asins, email |
waitlist | Old style: put your human on the list to hear when the next product goes live. Prefer want with a link, or hold on what's live. Needs their email. Optionally say what they want to buy and which agent platform you are. Inputs: email, want, platform, referral |
want | Say your human wants something. Takes a link or an ASIN plus their email. A hotel link becomes a stay want (give month, and nights if known), a subscription link becomes a software want (give plan), anything else is gear. Or set type and th Inputs: url, asin, asins, type, name, hotel |
want_gym | Your human wants a membership at a gym or studio near them. Takes the name, their five digit zip, the plan (monthly, annual, class-pack, other), and their email. People near the same gym on the same plan count together; when enough do, btw Inputs: name, zip, plan, email |
want_home | Your human wants a home job done: solar, home-battery, ev-charger, heat-pump, roof, windows, sauna-install, other. Takes the job, their five digit zip, an optional note, and their email. Homes near each other wanting the same job count toge Inputs: job, zip, note, email |
want_software | Your human wants a software subscription at group pricing. Takes the product (name or link), the plan (individual, family, team, other), and their email. Annual plans; vendors already have volume tiers and btw brings the volume. Returns how Inputs: product, plan, email |
want_stay | Your human wants a hotel in a given month. Takes the hotel (name or link), the month as YYYY-MM, nights if known, and their email. People wanting the same hotel in the same month count together; when enough do, btw asks the hotel for a grou Inputs: hotel, month, nights, note, email |
Every block below points at https://btw.space/mcp?utm_source=mcp-registry. Pick your client and copy.
claude mcp add --transport http btw https://btw.space/mcp?utm_source=mcp-registry
{
"mcpServers": {
"btw": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://btw.space/mcp?utm_source=mcp-registry"]
}
}
}{
"mcpServers": {
"btw": {
"url": "https://btw.space/mcp?utm_source=mcp-registry"
}
}
}{
"servers": {
"btw": {
"type": "http",
"url": "https://btw.space/mcp?utm_source=mcp-registry"
}
}
}{
"context_servers": {
"btw": {
"url": "https://btw.space/mcp?utm_source=mcp-registry"
}
}
}{
"mcpServers": {
"btw": {
"serverUrl": "https://btw.space/mcp?utm_source=mcp-registry"
}
}
}{
"mcpServers": {
"btw": {
"url": "https://btw.space/mcp?utm_source=mcp-registry"
}
}
}name: btw
version: 0.0.1
schema: v1
mcpServers:
- name: btw
type: streamable-http
url: https://btw.space/mcp?utm_source=mcp-registry{
"mcpServers": {
"btw": {
"httpUrl": "https://btw.space/mcp?utm_source=mcp-registry"
}
}
}{
"mcpServers": {
"btw": {
"type": "http",
"url": "https://btw.space/mcp?utm_source=mcp-registry"
}
}
}{
"mcpServers": {
"btw": {
"url": "https://btw.space/mcp?utm_source=mcp-registry"
}
}
}goose://extension?url=https%3A%2F%2Fbtw.space%2Fmcp%3Futm_source%3Dmcp-registry&type=streamable_http&id=btw&name=btw
It answered our last check on 24 October 2026 in 346 ms. Over 6 checks since 12 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by btw.space and served from btw.space, the vendor's own domain: https://btw.space/mcp?utm_source=mcp-registry.
18, as returned by the server's own tools/list on 23 September 2026: book_stats, get_chain, hold, join, join_chain, leave, list_chains, park, and 10 more.
It answered our last check on 24 October 2026 in 346 ms. Over 6 checks since 12 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://btw.space/mcp?utm_source=mcp-registry. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: space.btw. Endpoint host: btw.space. ARD identifier: urn:air:space.btw:mcp:btw.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.