Demo store: nothing ships and no payment is taken.

Kettle & Loom

Eval scorecard

The numbers below come from pnpm eval run on a fixed set of 40 shopper questions (32 product searches and 8 that need a specific tool), then committed. They are not worked out when you load this page.

Last run4bef2aeconcierge-2026-10-22.1

Does the right product appear near the top? hit@3 is the share of questions where an acceptable product is among the first three results. Raw sentence gives the search the shopper’s own words; tool arguments gives it what a good model would pass after reading them.

hit@1, raw sentence
100.0%
hit@3, raw sentence
100.0%
gate: 85% or more
hit@3, tool arguments
100.0%
gate: 85% or more
Wrongly confident
0 of 8
things the shop does not sell
ModeQuestionshit@1hit@3hit@5MRRp50p95
Raw sentence32100.0%100.0%100.0%1.000538 ms771 ms
Tool arguments32100.0%100.0%100.0%1.000541 ms809 ms

30 of 32 answerable questions came back with a confident match; the rest were found but flagged as a weak match. Latency is one catalogue query from the sandbox to Neon in Singapore, so it is mostly the network.

Tool selection and faithfulness

The 8 tool questions, plus four product searches, run through the real concierge: the same route, tools, cart and database, with a throwaway copy of the catalogue. Right tool means the expected tool was called at some step; right arguments means it was called with the right order, product or variant (for add to cart: the cart ended up holding the right item in the right quantity). Grounded means every price, measurement and order number in the answer appears in what the tools returned. The judge is a second model that reads each answer against the same evidence.

No language model has been measured yet.

Workers AI’s free daily allowance was used up before the first run could finish, so the only run recorded below is the scripted stand-in. Run pnpm eval once the allowance resets (00:00 UTC), or with an Anthropic key, and the result appears here.

Scripted stand-in

The model behind the browser tests and the handler tests: a keyword planner that reads the same prompt a model would. Its score checks that the harness and the tools work. It says nothing about how a language model performs.

Right tool
8 of 8
first tool 7 of 8
Right arguments
8 of 8
Grounded answers
12 of 12
Judge
not run
needs a language model

History

One point per run. A flat line at the top means nothing has slipped; a drop shows which change to look at, because every run records its commit and prompt version.

Search hit@3

Search hit@3: Raw sentence 100% over 1 runs; Tool arguments 100% over 1 runsRaw sentence: 100.0% on 22 Oct, 17:24 UTCTool arguments: 100.0% on 22 Oct, 17:24 UTC
Raw sentence
100.0%
Tool arguments
100.0%

One run so far. Scale 0 to 100%.

Right tool called

Out of the 8 tool questions.

Right tool called: Scripted stand-in 100% over 1 runsScripted stand-in: 100.0% on 22 Oct, 17:24 UTC
Scripted stand-in
100.0%

One run so far. Scale 0 to 100%.

Answers with every figure grounded

Answers with every figure grounded: Scripted stand-in 100% over 1 runsScripted stand-in: 100.0% on 22 Oct, 17:24 UTC
Scripted stand-in
100.0%

One run so far. Scale 0 to 100%.

Judge: fully supported answers

Needs a language model to judge.

Not measured yet.

Every run, as a table
Run (UTC)Commithit@3 rawhit@3 argsModelRight toolGrounded
22 October 2026 at 17:244bef2ae100.0%100.0%scripted, router8 of 812 of 12

What this does not tell you

  • The 40 questions were written by the people who built the search. 100% here means nothing on this set has regressed, not that every shopper’s question will work.
  • Eight tool questions is a small sample: one miss moves the score by 12.5 points.
  • The faithfulness judge is a language model and can be wrong in either direction. The grounded check is stricter about numbers and blind to everything else.
  • Nothing here measures how the answers read. The concierge is the place to judge that.

Your cart

Nothing in the cart yet.

Add a pan, a towel or a mug and it will wait here. Orders over £60 ship free.

Browse the shop