---
title: "Batch Contact Related"
method: POST
path: "/contacts/related"
tags: ["Contacts"]
---

# Batch Contact Related

`POST /contacts/related`

## Request

- Base URL: `https://be.graph8.com/api/v1`
- URL: `https://be.graph8.com/api/v1/contacts/related`
- Auth: HTTP bearer

Sequences and/or lists for up to 100 contacts in ONE request. Writes nothing.

Use this instead of looping `GET /contacts/{contact_id}/sequences` or
`/lists` per contact: the loop spends one rate-limit slot per contact and
hits 429 on a large book; this spends one per 100.

Each contact gets exactly what its per-contact route returns, through the
same access check. A contact that does not exist or is outside the key's
scope for any requested include comes back `found: false` with no related
records, rather than failing the batch. POST only because the ids are a
body; it is tiered as a read.

## Headers

- `Authorization` string, nullable
- `X-Target-Org-Id` string, nullable

## Request body

- ContactRelatedBatchRequest: Which contacts, and which of their related records, to read in one call.
  - `contact_ids` integer[], required: Up to 100 contact ids, the same ids the per-contact routes take. Duplicates are read once; the response keeps first-seen order.
  - `include` string[]: Related records to return per contact. `sequences` matches `GET /contacts/{contact_id}/sequences`; `lists` matches `GET /contacts/{contact_id}/lists` (keyed on the contact primary key).

## Response `200`

Successful Response

- ApiResponseContactRelatedBatchResponse
  - `data` ContactRelatedBatchResponse, required
    - `items` ContactRelatedItem[]
      - `contact_id` integer, required
      - `found` boolean, required: False when the contact does not exist or is outside this key's scope (indistinguishable on purpose, like the per-contact 404).
      - `sequences` object[], nullable
      - `lists` object[], nullable
  - `pagination` PaginationMeta
    - `page` integer, required: Current page number (1-indexed)
    - `limit` integer, required: Items per page
    - `total` integer, required: Total number of items
    - `has_next` boolean, required: Whether there are more pages
    - `next_cursor` string, nullable: Opaque cursor for the next page; null when there are no more items. Pass it back as the `cursor` query param to fetch the following page without computing page numbers.
    - `total_available` integer, nullable: Search endpoints only: how many records really match, when known. Can be larger than `total`, which is capped at the 10,000 results that can be paged. For company search this is a distinct-company estimate. Null when unknown; absent outside search.
    - `total_is_lower_bound` boolean, nullable: Search endpoints only: true when more records match than `total` shows (the result set is larger than the 10,000 results that can be paged). Absent outside search.
    - `notes` string[], nullable: Search endpoints only: plain-language notes about the result, e.g. that more records match than can be paged, or that a reversed `between` range was put in order.

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/graph8/apis/graph8-developer-api.md) · [All operations](https://skmtc.dev/graph8/apis/graph8-developer-api/llms.txt) · [OpenAPI document](https://skmtc.dev/graph8/apis/graph8-developer-api/revisions/2e7cfa0ca921?raw)