MCP server

Tethered Trust Official

com.tetheredtrust/tethered-trust

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Compatibility checks for AI agents before they buy or install: verdicts, evidence, receipts.

Website

At a glance

Type

MCP server

Publisher

tetheredtrust.com (verified by the MCP Registry)

Status

Working at last check

Tools

18

Token cost

About 6,125 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http tethered-trust https://tetheredtrust.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.tethered-trust]
url = "https://tetheredtrust.com/mcp"

Gemini CLI

{"mcpServers":{"tethered-trust":{"httpUrl":"https://tetheredtrust.com/mcp"}}}

Cursor

{"mcpServers":{"tethered-trust":{"url":"https://tetheredtrust.com/mcp"}}}

VS Code

{"servers":{"tethered-trust":{"type":"http","url":"https://tetheredtrust.com/mcp"}}}

Antigravity

agy mcp add tethered-trust https://tetheredtrust.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"tethered-trust","server_url":"https://tetheredtrust.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"tethered-trust","server_url":"https://tetheredtrust.com/mcp"}

Tools

• check_batch ~353 tokens
  Up to 25 independent compatibility checks in one call (e.g. ranking candidate products for one device). Each result has its own decision, evidence and receipt.
• check_cart_before_checkout Moves money · ~394 tokens
  Checks a cart at checkout. Takes the checkout session exactly as a commerce protocol returns it (a UCP checkout or an ACP CheckoutSession) or plain line items, plus what the customer already owns. Returns a decision per line item, safe_to_checkout, an action (proceed, resolve_conditions, do_not_chec
• check_compatibility ~704 tokens
  Will this exact part or accessory work with that exact device? Use before recommending or buying. Covers anything that has to fit, plug in, mount, run on or charge with something someone owns. Verified catalog (specs checked against cited manufacturer sources): computers & consoles (RAM, M.2 SSDs, U
• check_fit ~539 tokens
  Will this appliance physically fit this space? Compares dimensions plus typical installation clearances and required connections (power, water, gas).
• enrich_catalog ~252 tokens
  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 so agents can match
• find_parts ~207 tokens
  Which parts and accessories fit this model? OEM parts first, then verified alternatives: e.g. a refrigerator's water filter, a printer's cartridges, a camera's lenses and batteries, a tool's batteries, or the RAM, SSDs and chargers that fit a computer.
• fix_purchase_plan Moves money · ~688 tokens
  When a plan comes back incompatible or conditional: the smallest set of changes that makes it work (swap a part for a verified one that fits everything else, add a missing cooler, hub or adapter, trim quantities that exceed slots), re-validated, with the reason for each change. Fewest changes and ve
• how_it_works ~50 tokens
  What Tethered Trust is, what it covers, where its data comes from, pricing and terms.
• identify_from_photo ~153 tokens
  Read the brand, model and part numbers from a photo of a label or nameplate and match them to products. Matches are returned as candidates, with what was read. The photo isn't stored.
• identify_product ~347 tokens
  Identify a product from a URL, model number, SKU, ASIN, UPC/EAN or description, and get its compatibility profile: the standards it takes and provides (mounts, sockets, connectors, platforms, part numbers, sizes), numeric limits (OS version, watts, weight, screen size), evidence and freshness. Produ
• list_coverage ~419 tokens
  Which product categories and models are in the compatibility graph, with counts. Pass a category to list its models. Covers anything that has to fit, plug in, mount, run on or charge with something someone owns. Verified catalog (specs checked against cited manufacturer sources): computers & console
• list_standards ~91 tokens
  Every compatibility standard family (with reviewed values), the open formats used for new values, and the numeric limit keys. How Tethered Trust represents physical connections, dimensional fit, vehicles, software and services.
• plan_upgrade ~197 tokens
  What can be upgraded on this device and with what: memory (type, slots, maximum), storage (M.2 slots, lengths, PCIe generation), power, CPU and cooling for motherboards, graphics card and cooler clearance for PC cases, plus the parts in our graph that fit (verified first) and the manufacturer's note
• recheck_plan ~101 tokens
  Re-run a saved purchase plan against today's data before ordering, and see what changed since it was issued: decisions, product records, or receipt status.
• report_outcome ~319 tokens
  After a purchase, report whether it actually fit. Free, safe to call, and only the first report per check counts. Reports are weighted by level: self_reported (website), agent_reported (anonymous API/MCP), partner_reported (API key holders) and order_confirmed (order evidence we've confirmed). Only
• resolve_product ~138 tokens
  Look up one product in the Tethered Trust graph by name or model number and get its structured specs, what it accepts (mounts, battery platforms, cartridges, protocols) and what it fits. If the text could mean several models, returns them all as candidates (ambiguous: true) with ambiguous: true.
• validate_purchase_plan ~1029 tokens
  Check a whole purchase before recommending or ordering it: the setup the person owns (with current configuration) plus everything in the cart. Returns one decision (supported / conditional / incompatible / insufficient_evidence), a result per part, configuration limits across the plan (memory slots
• verify_receipt ~144 tokens
  Check a Tethered Trust receipt: is the signature ours, is it still within valid_until, and have the records behind it changed since? A valid receipt proves what we said and when; it doesn't guarantee the verdict was right.

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