WebMCP copilot

/HUMAN + AGENT MARKETPLACE

This page registers structured tools on document.modelContext. An in-browser agent can search listings, highlight cards, and open details while you watch the same grid. Writes still wait for your confirmation.

Browser support

SUPPORTED: NO

REGISTERED: NO (0)

Open this URL in ChatGPT’s in-app browser, or Chrome 149+ with chrome://flags/#enable-webmcp-testing.

Judge keys are supplied privately and only work on the isolated sandbox. Nothing is sent to production.

Checking this host and stored agent key.

Judge in 60 seconds

Open this page in ChatGPT’s in-app browser or Chrome 149+ with chrome://flags/#enable-webmcp-testing.
Paste the judge mission: Paris e-bike, preferred 1,200 EUR, hard budget 1,300 EUR, battery ≥ 80%, offer 1,100 EUR.
Watch the registry: 5 public tools, 11 once the synthetic judge key is connected on the sandbox.
Look for APPROVAL_REQUIRED on 1,350 EUR, RESERVED after the seller accepts, and a redacted receipt.

Write tools need a connected agent key. Reads work for guests. Judge keys are supplied privately and only work on the isolated sandbox.

Decisive moments

What you should see

0/9 observed

Derived live from the redacted action receipts on this device. Nothing here is simulated: each line lights up only when the matching tool actually ran.

01Mission created
pending
Budget, radius and requirements are now enforced server-side.
02Candidates ranked
pending
Each listing carries an explicit policy_fit verdict.
03Negotiation opened
pending
Seller text is treated as untrusted content.
04Offer confirmed by you
pending
The agent stopped for an editable confirmation.
05Policy stop
pending
An amount above the hard budget was refused, not bypassed.
06Owner decision recorded
pending
Only the owner page could resolve the approval.
07Listing reserved
pending
Acceptance reserved the listing atomically.
08Consent requested
pending
One consent reveals nothing; both owners must agree.
09Receipt re-read
pending
The redacted receipt was fetched back by request ID.

Registered tools

get_page_context

read

show_listings

read

open_listing

read

search_listings

read

get_action_receipt

read

/Browse listings

Agent tool calls update this same grid. Highlighted cards are the ones the agent selected.

Condition:Price:–

24 results

21d

Mobility

Fair

Trottinette électrique Xiaomi Pro 2

Autonomie réelle ~35 km, pneus neufs, chargeur inclus.

/HUMAN + AGENT MARKETPLACE

Browser support

Judge in 60 seconds

Delegate the search. Keep the limits.

What you should see

Registered tools

/Browse listings

Trottinette électrique Xiaomi Pro 2

Platine vinyle Technics SL-1200 MK2

Table à manger chêne massif 180 cm

Used e-bike urban commute - battery health 88%

Fujifilm X-T30 II + XF 18-55 mm

Herman Miller Aeron chair size B

Used e-bike - battery health 64% needs confirmation

Used e-bike - battery health 82% above preferred target

Barbecue Weber Spirit E-310 gaz

Canapé 3 places velours vert

Guitare Fender Player Stratocaster

Nintendo Switch OLED + 2 jeux + étui

iPad Air M1 64 Go Wi-Fi + Smart Folio

Vélo enfant 20 pouces B'Twin

LG C2 55" OLED TV

Tondeuse Bosch Rotak 43 filaire

Lot de 40 vinyles jazz et soul

Bicicleta gravel Canyon Grail 7 talla M

Intégrale Tintin 24 albums

Veste cirée Barbour Beaufort taille L

Brompton C Line Explore 6-speed

Planche de surf 7'2 mini-malibu

Stand-up paddle gonflable 10'6 + pagaie

Casque Sony WH-1000XM5 noir