bots.st/tethered-trust
Tethered Trust
Agent compatibility and recall checks
2726 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 30
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://tetheredtrust.com/mcp
What it can do
| Tool | What it says it does |
|---|---|
attach_order | Call this right after placing an order you checked with check_cart_before_checkout, validate_purchase_plan or check_compatibility: link the receipt_id to the order number, AP2 cart or intent mandate, ACP checkout session, UCP checkout or payment reference. This makes a Decision Record: if the… |
check_batch | 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 | 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… |
check_compatibility | Call this whenever you're about to recommend, link to or buy a part, accessory, charger, filter, cartridge, lens, battery, memory, mount or adapter for something the person already owns, or they ask "will X work with Y" / "is this compatible". Pass both exact models. Covers anything that has to… |
check_fit | Will this appliance physically fit this space? Compares dimensions plus typical installation clearances and required connections (power, water, gas). |
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 usual cause of… |
check_recalls | Call this before recommending, buying or selling anything used or secondhand, any baby or kids' product, appliance, heater, battery-powered device or vehicle, or when the person asks if something is safe or recalled. Searches US government recall notices: CPSC for consumer products (appliances… |
decision_status | Call this right before acting on a watched decision: still_holds, changed (a record it rested on was updated), recall_on_record (a recall notice names one of the products), or expired, with what changed and what isn't monitored. |
dispute_packet | Call this when an agent purchase is disputed, returned as wrong, or charged back and a Tethered Trust receipt exists for it: we assemble the evidence (the decision, products checked, sources with dates, the linked order or mandate, records and recall notices that changed since, reported outcomes… |
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 so agents can… |
file_claim | Call this when a product we said would work didn't (within 60 days of the check): send the receipt_id and what happened. Decided within 10 business days; if our answer or data was wrong, the fee paid for that check is refunded and the data corrected. Free. For a plain fit/no-fit report without a… |
find_parts | Call this when the person names a device or appliance they own and needs a replacement or add-on ("what filter does my fridge take", "which RAM can I add", "what battery fits my drill") before you search shops or guess. Which parts and accessories fit this model? OEM parts first, then verified… |
fix_purchase_plan | 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… |
how_it_works | What Tethered Trust is, what it covers, where its data comes from, pricing and terms. |
identify_from_photo | 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 | Call this when the person gives a shop link, ASIN, barcode or vague product name and you need the exact model and what it's compatible with. 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… |
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 and PyPI, plus its… |
list_coverage | 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 &… |
list_standards | 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. |
listing_status | Where a watched MCP server stands right now: each directory's status, the latest changes, and when the watch ends. Free. |
plan_upgrade | 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… |
recheck_plan | 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 | 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)… |
resolve_product | 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 | Call this before you recommend or order two or more items that have to work together or with what the person owns (a PC build or upgrade, a camera kit, a smart-home setup, a charger plus cable). Check a whole purchase before recommending or ordering it: the setup the person owns (with current… |
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 sample call on a… |
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 to this address… |
verify_receipt | 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. |
watch_decision | Call this after a compatibility check, purchase plan, verify_page or verify_mcp result that someone will rely on later (an order next week, an install, a resale, the next agent in a handoff). For product decisions we watch the records, manufacturer sources and US recall notices behind it; for page… |
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 it, robots.txt… |
In its maker's words
Fit, compatibility and recall checks for AI agents before they buy: verdicts, evidence, receipts.
- Website
- tetheredtrust.com
- Publisher
- tetheredtrust.com
- Listed from
- the official MCP Registry as
com.tetheredtrust/tethered-trust - Version
- 0.54.2, updated 8 Nov 2026
- Kinds of work
- Security and trust, Shops and payments, Browser and automation
The domain it lives on
- tetheredtrust.com
- registered 28 Jun 2025 (1 year ago), at Amazon Registrar, Inc., its name does not resolve now
From our own crawl of domain names: registry records and the home page as our crawler last saw it.
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 2726 ms | |
| Answered | 2413 ms | |
| Answered | 2298 ms |
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