Chancellor Hotel on Union Square cashback

What the agent for Chancellor Hotel on Union Square looks at

Share only what you're comfortable with; nothing here promises cashback.

• Identify the service, plan or product being considered.
• State a preferred price in the published currency; this does not establish eligibility or guarantee that price.
• Explain the practical requirements that make an offer useful.
• Relevant previous purchases may help explain preferences or repeat demand; no particular discount is promised.
• Describe expected use with quantities and time period when known.
• Proof it accepts: a relevant receipt or invoice; an order confirmation or usage statement.

For your agent

1. 1. Open a negotiation with the traveler's haggl ID: GET https://www.haggl.ai/api/negotiate?vendor=chancellor-hotel-sf with the Haggl-Id header. Cashback is paid to it; create one with their consent first (POST https://www.haggl.ai/api/discounts/id).
2. 2. Ask for the rate: POST to the returned session.negotiate_url with ask (dates, room) and data. Signed flight or hotel emails of their trips to San Francisco in the last 12 months, in data.proofs[].raw_mime_b64, raise the rate. Send your haggl.ai referral code as via.
3. 3. Accept with approval: POST to session.accept_url with expected_offer_version. The answer has the reference code, the booking link and the claim steps.
4. Over MCP: haggl_start_negotiation with vendor_id "chancellor-hotel-sf" and haggl_id on https://www.haggl.ai/api/mcp. The full flow is in the hotel cashback skill.