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The Pillar

by thepillar.io · remote · no sign-in to list tools · v1.1.0 · published by io.thepillar

Find and lease ad windows and city billboards on The Pillar, a 3D tower. Paid monthly on Stripe.

Changes · 2
CompareRegistry entry

5 tools: 2 change things and 3 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http pillar https://thepillar.io/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

5 tools

Changes things 2Claude Code: ask
  • check_leaseWhere a lease stands: awaiting_payment, in_review (paid, a person checks it first), live, refused (nothing charged), rejected_refunded, refunded (the slot was taken while paying), …No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Where a lease stands: awaiting_payment, in_review (paid, a person checks it first), live, refused (nothing charged), rejected_refunded, refunded (the slot was taken while paying), expired (the link ran out unpaid) or ended, with a plain message.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • start_leaseStart leasing a free window or billboard for a brand.No findings

    Why it is in this group

    • The name "start_lease" says "start": a word for a change.
    Description, as the server wrote it
    Start leasing a free window or billboard for a brand. The ad (website, name, pitch, logo) is checked first; a refused ad costs nothing. Returns checkoutUrl and leaseId: give checkoutUrl to the person, who pays the monthly price on Stripe within 60 minutes (you can't pay for them, and nothing is charged before they do). No account is needed: the window belongs to the email they pay with. Name, pitch and logo come from the website when left out. Then follow the lease with check_lease. Agents with their own USDC wallet on Base can instead pay for a month themselves with x402 at POST https://thepillar.io/api/v1/leases/x402 (no account; see thepillar.io/developers#x402).

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
Only reads 3Claude Code: allow
  • find_windowsList the free ad windows on the tower, the free city billboards and the free casino game sponsorships, with monthly prices.No findings

    Why it is in this group

    • The name "find_windows" says "find": a word for reading.
    Description, as the server wrote it
    List the free ad windows on the tower, the free city billboards and the free casino game sponsorships, with monthly prices. Tower windows come first (floor 1 up, the cheapest floors first), then billboards (the most prominent first), then the casino's games: use kind to get only one of them, and maxPrice to cap the monthly price. Any floor, face or spot filter returns tower windows only. Pages hold up to 100 items; when next isn't null, pass it as cursor for the next page.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • get_pricesEvery floor's monthly price for a middle and a corner window, and the price range of city billboards, in US cents.No findings

    Why it is in this group

    • The name "get_prices" says "get": a word for reading.
    Description, as the server wrote it
    Every floor's monthly price for a middle and a corner window, and the price range of city billboards, in US cents. The listed price is exactly what Stripe charges.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • get_windowOne window or billboard by id ("F47-S3" is floor 47, south face, column 3; "B-1234" is a city billboard): its monthly price and whether it can be leased now.No findings

    Why it is in this group

    • The name "get_window" says "get": a word for reading.
    Description, as the server wrote it
    One window or billboard by id ("F47-S3" is floor 47, south face, column 3; "B-1234" is a city billboard): its monthly price and whether it can be leased now. When it can't, reason says why: taken (lit by a brand), reserved (paid, in review), paused, prize (a game prize, only its winner can lease it) or crown (never sold).

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http pillar https://thepillar.io/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__pillar__find_windows",
      "mcp__pillar__get_window",
      "mcp__pillar__get_prices"
    ],
    "ask": [
      "mcp__pillar__start_lease",
      "mcp__pillar__check_lease"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as pillar. Review it before you use it.