---
title: Negotiations
description: Negotiation is a versioned exchange of Offers.
canonical: https://breezewish.com/developers/concepts/negotiations
raw: https://breezewish.com/developers/concepts/negotiations.md
apiVersion: v1
lastUpdated: 2026-10-18
category: Concepts
---

# Negotiations

Negotiation is the structured exchange of counters on an Offer until a party accepts, rejects, or withdraws.

## Resources

- MCP `counter_offer`, `accept_offer`, `reject_offer`, `withdraw_offer`
- `POST https://api.breezewish.com/v1/offers/{id}/counter`

Send the expected commercial terms in integer minor units. A stale concurrent accept is rejected by the deal transaction: one Deal per Request.

## Schema

[https://api.breezewish.com/schemas/v1/negotiation.json](https://api.breezewish.com/schemas/v1/negotiation.json)


## Common errors

| Code | Meaning |
| --- | --- |
| UNAUTHENTICATED | Missing or invalid credential. |
| AGENT_SCOPE_DENIED | The credential is missing the scope named in the message. |
| DELEGATION_LIMIT | Autonomy is below the operation. COMMIT is required to accept, approve, or check out. TRANSACT is required to confirm closure. |
| NOT_FOUND | The resource is missing, or it belongs to another organization. |
| IDEMPOTENCY_CONFLICT | The same Idempotency-Key was reused with a different body. |
| RATE_LIMITED | The caller exceeded the public or authenticated limit. |