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Link transactions to a counterparty

Authorizations

X-API-Key
string
header
required

Breadbox API key with format bb_<base62>. Carries either read_only or full_access scope. Write endpoints (and a handful of sensitive reads — /api-keys, /users/{user_id}/login) require full_access; endpoints that require it are flagged in their description.

Path Parameters

id
string
required

Body

application/json
transaction_ids
string[]
required
Maximum array length: 50

Response

Updated counterparty.

The canonical, cross-provider "other side" of a charge (a merchant or non-merchant). Surrogate identity + name + optional enrichment; membership comes from assign_counterparty rules, not a normalizer.

id
string
short_id
string
name
string
website_url
string | null
logo_url
string | null
category_id
string | null
mcc
string | null
canonical_counterparty_id
string | null

Self-reference for later rollups of duplicate counterparties.

created_at
string<date-time>
updated_at
string<date-time>
Last modified on June 25, 2026