Sendero exposes a shared tool registry across MCP, web chat, WhatsApp, Slack, and the edge /tools/:name HTTP surface. Each paid HTTP tool is priced in USDC and charged only when execution succeeds.

Public tools

Tool	Category	Price (USDC)	Does
`check_treasury`	Read	$0.0005	Read treasury balance and policy limits.
`check_policy`	Read	$0.0005	Evaluate a proposed trip or payment against tenant policy.
`rate_agent`	Read	$0.0005	Read Sendero agent identity and reputation signals.
`log_agent_action`	Audit	$0.0005	Emit an on-chain breadcrumb for an agent action.
`faucet_drip`	Dev/test	$0.0005	Request test assets for local or testnet demos.
`quote_fx`	Read	$0.0008	Quote indicative travel FX.
`gateway_balance`	Read	$0.001	Read Circle Gateway unified USDC liquidity.
`guest_claim_link`	Escrow	$0.001	Turn a guest claim link into claim calldata for a traveler wallet.
`search_flights`	External API	$0.002	Search live flight inventory by route and date.
`search_hotels`	External API	$0.002	Search lodging inventory for the trip context.
`recommend_restaurants`	Concierge	$0.002	Recommend restaurants from traveler context and location.
`export_route_map`	Concierge	$0.002	Export a route or itinerary into Google Maps and Apple Maps links with a static preview card.
`trip_checkin_reminder`	Concierge	$0.003	Canonical check-in nudge: window, transit note, leave-by, and next action.
`list_flight_ancillaries`	Concierge	$0.002	Read bags, cancel-for-any-reason, and seat map on a flight offer — feeds book_flight `services[]`.
`ensure_traveler_identity`	Identity	$0.003	Idempotent traveler identity + CustomerUserGroup sync. Unlocks Travel Support Assistant for the traveler.
`find_airports_nearby`	Read	$0.001	Places lookup —: airports + cities within a radius of a lat/lng or matching a free-form query.
`display_offer_conditions`	Read	$0.001	Canonical change/refund conditions (free · penalty · allowed-unknown-fee · not allowed · unknown), slice-level + private fares + credit applicability.
`quote_stay`	External API	$0.003	Turn a our lodging supplier network rate into a quote — surfaces cancellation timeline, payment type, and supported loyalty programme.
`book_stay`	Composed	$0.008	Book a our lodging supplier network quote with loyalty_programme_account_number + Customer User linkage.
`cancel_order_quote`	External API	$0.002	Unconfirmed cancellation quote — refund destination + any airline credits to be issued.
`confirm_cancel_order`	Composed	$0.003	Confirm a cancellation quote (must run within expiry). Returns final airline-credit codes.
`list_airline_credits`	Read	$0.001	Traveler's airline credits (unused tickets, MCOs, vouchers) with state + totals.
`restaurant_route_card`	Composed	$0.005	Shortlist restaurants and export a route from the traveler to the top pick.
`airport_transfer_coordinator`	Composed	$0.008	Pickup plan with meeting point, primary transport, backup options, and airport→destination route.
`airport_arrival_playbook`	Composed	$0.008	One-screen arrival briefing: 5-step playbook, transport, timezone, and route.
`trip_delay_replanner`	Composed	$0.01	Rebuild a disrupted itinerary: replacement flights, overnight hotel, and route.
`scan_document`	Multimodal	$0.01	Extract structured fields from a travel/finance document (invoice, receipt, boarding pass, ID) via the @sendero/ocr pipeline.
`send_tokens`	On-chain	$0.003	Transfer USDC on Arc.
`gateway_transfer`	On-chain	$0.003	Move USDC through Circle Gateway.
`prefund_trip`	Escrow	$0.003	Create a prepaid guest escrow and return a shareable claim link.
`reserve_booking`	Escrow	$0.003	Reserve an upper-bound amount from a claimed trip budget.
`commit_booking`	Escrow	$0.003	Commit the actual vendor amount and release unused reserve.
`confirm_ticketing`	Escrow	$0.003	Attach ticketing proof to the on-chain booking.
`settle_booking`	Escrow	$0.003	Release escrow to the vendor and fee legs.
`cancel_booking`	Escrow	$0.003	Cancel and sweep unspent escrow back to the buyer.
`swap_tokens`	On-chain	$0.005	Swap tokens on Arc.
`bridge_to_arc`	On-chain	$0.005	Bridge USDC into Arc with CCTP.
`generate_booking_invoice`	Invoice	$0.005	Create invoice records, render PDF, and email the traveler.
`book_flight`	Composed	$0.008	Hold and pay a flight hold order from prefunded balance.
`swap_and_bridge`	Composed	$0.01	One-shot bridge into Arc and swap.
`settle_split`	Composed	$0.01	Atomically fan out supplier, agency, rail, and validator payments.

Workflows

Tools are low-level capabilities. Real travel operations should use named workflows:

Workflow	Does
`sendero.book_flight`	Search, policy-check, reserve escrow, hold the flight, wait for ticketing, settle, and invoice.
`sendero.guest_prefund`	Create a prepaid traveler budget, wait for claim, then book against the claimed escrow.
`sendero.agency_cohort`	Prefund many traveler links for agency cohorts or group travel.
`sendero.group_trip`	Coordinate multiple travelers before confirming.
`sendero.refund`	Cancel and refund a booking.
`sendero.check_in_reminder`	Geocode, read local timezone, and deliver the canonical check-in nudge before awaiting traveler reply.
`sendero.trip_delay_replanner`	Build a rebook plan after disruption; on approval, hold the chosen flight via `book_flight`.
`sendero.book_with_ancillaries`	Search → list ancillaries → pause for selection → hold with bags/seats/CFAR attached.
`sendero.cancellation_recovery`	Post-ticket recovery on `order.cancelled` / airline change webhooks: rebook or refund.
`sendero.book_stay_with_loyalty`	Stays: search → pause → quote → pause for loyalty → book.
`sendero.cancel_order_with_credits`	Flight cancellation: quote → approve → confirm → log credits.

Discover workflows at /api/workflows/list and run them at /api/workflows/run.

Tool envelope

The direct HTTP surface wraps every successful result like this:

{
  tool: 'search_flights',
  paid: true,
  priceUsdc: '0.002',
  payment: {
    payer: '0x...',
    amountUsdc: '0.002',
    settlementTx: '0x...'
  },
  result: {
    offers: []
  }
}

The MCP surface returns the same result payload inside MCP content text. Use tools/list for exact JSON schemas.

The edge tool surface keeps calls at or below $0.01 for testnet and agentic-commerce demos. Production billing can still apply tenant-specific spend caps, bulk discounts, or GMV take rates through the billing catalog.

Compared with a single Ethereum mainnet transfer, Arc lets Sendero price high-frequency agent loops in fractions of a cent while keeping an auditable payment trail.

Tool catalog

Public tools

Workflows

Tool envelope

Pricing philosophy

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