Tethered Trust for builders

Connect Remote server

claude mcp add --transport http builders https://tetheredtrust.com/mcp/builders --header "Authorization: Bearer <YOUR_API_KEY>"

{
  "mcpServers": {
    "builders": {
      "url": "https://tetheredtrust.com/mcp/builders",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}

{
  "servers": {
    "builders": {
      "type": "http",
      "url": "https://tetheredtrust.com/mcp/builders",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}

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

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 12 found in our last check

• how_it_works

  What Tethered Trust is, what it covers, where its data comes from, pricing and terms.

• enrich_catalog

  For retailers and marketplaces (API key required): up to 50 products per call (SKU with title, URL or GTIN) in; each product's compatibility attributes out (standards it takes and provides, numeric limits, evidence level, freshness), ready to add to a product feed or UCP catalog…

• verify_page

  Call this before you tell someone a web page, site or deploy is done or working, or before relying on another agent's "it's live": we open the public page in a separate browser (desktop or mobile) and check what you list. It loads; this text is visible; this link or button leads…

• verify_mcp

  Call this before you recommend, install or rely on an MCP server, after deploying one, or when a connector seems broken: we connect as an MCP client, list its tools, check each has a usable input schema and description, confirm the tools you name exist, and optionally run one sa…

• launch_check

  Call this after building or deploying an MCP server or paid agent API, or when its listings may be out of date: we check it works (as verify_mcp does), then look it up in the official MCP Registry (and whether the listed version is current), Glama, PulseMCP, the x402 Bazaar, npm…

• publish_to_registry

  Call this to get an MCP server into the official MCP Registry (which Glama, PulseMCP and others import from) without mcp-publisher or DNS: first call with url returns a one-line file to host at https://<domain>/.well-known/mcp-registry-auth; once it's up, call again with publish…

• check_payment_setup

  Call this after building or changing a paid (x402) endpoint, or when agents' payments fail: we call it unpaid like a paying agent, read the 402, and check the payment request parses (v1 or v2), the token's EIP-712 domain (extra.name/version) matches the contract on-chain (the us…

• watch_listing

  Call this after launching an MCP server or paid agent API to keep it findable: we run launch_check today and every day for 30 days, and tell your webhook (signed) when something changes: the server stops answering, the registry listing falls behind a release, a directory drops i…

• reliability_score

  Before paying an unfamiliar x402 API, look up its payment-readiness score (0-100) from our daily unpaid checks of the x402 Bazaar: how many of its endpoints would accept an agent's payment, and the common problems. Free.

• launch_plan

  For sellers: 30 days of official MCP Registry publishing on every new version, a daily listing watch (registry, Glama, x402 Bazaar, npm, PyPI, health) and daily payment checks of up to 10 x402 endpoints, with one signed webhook. $12 per 30 days; renew with plan_id.

• launch_plan_status

  Where a Launch Plan stands: listings, registry version and each paid endpoint's payment check. Free.

• listing_status

  Where a watched MCP server stands right now: each directory's status, the latest changes, and when the watch ends. Free.

Headers

Details

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• RightCard

  Which of your credit cards to use at any store, from verified bank data. No bank login.

• Africa Compliance Data

  African holidays, business days, VAT, withholding tax, tax treaties, tax IDs and filing deadlines

• BusCalc Business Calculators

  Business calculators, data lookups, replayable receipts, and documentation for enterprise pilots.

• CarLoanMath

  US car loan math: monthly payment, compare loans, max price for your budget, amortization. Free.

• InfinityVolume

  Dollar volume across 13 stock markets and US sectors, against each one's own normal. No prices.

• xytara MCP Executor

  Pay-per-call MCP tools and signed on-chain attestations: 20 free/day, then x402 or a spend key.