Custom Object Management

Source of truth

hubspot schemas --help is authoritative. Subcommands: list, get, create, update (metadata only), delete (destructive). Schema writes require a private app token with crm.schemas.custom.write. Read bulk-operations/SKILL.md first — every command here uses its JSONL conventions, and schemas delete uses its dry-run / digest / confirm flow.

Discover existing schemas

hubspot schemas list                                       # JSONL: name, label, singular, objectTypeId, source
hubspot schemas list | jq 'select(.source=="custom")'      # custom only
hubspot objects types | jq -c 'select(.source=="custom")'  # same set, also shown to confirm `--type` resolves

name is what every other command takes. objectTypeId (e.g. 2-12345678) is only needed for workflow PLATFORM_FLOW targets.

Inspect one schema

hubspot schemas get pets

Returns the full definition — properties, associations, labels, requiredProperties, primaryDisplayProperty, fullyQualifiedName. Reshape with jq as needed (see bulk-operations/resources/json-patterns.md).

Create a schema

Build a JSON body and pipe it (or pass --file). Minimal valid body:

{
  "name": "equipment",
  "labels": {"singular": "Equipment", "plural": "Equipment"},
  "primaryDisplayProperty": "equipment_name",
  "requiredProperties": ["equipment_name"],
  "properties": [
    {"name": "equipment_name", "label": "Name", "type": "string", "fieldType": "text"}
  ],
  "associatedObjects": ["contacts"]
}

cat equipment-schema.json | hubspot schemas create --dry-run   # preview
hubspot schemas create --file equipment-schema.json            # execute

Add more properties later with hubspot properties create --type ....

Update schema metadata

update patches labels / description only. Property edits go through hubspot properties.

echo '{"labels":{"singular":"Device","plural":"Devices"}}' | hubspot schemas update equipment

update also supports --dry-run → digest → re-run with --digest --confirm (see bulk-operations/SKILL.md for the pattern).

Delete a schema (destructive)

Schema delete is destructive and irreversible — it permanently removes the schema and every record of that type. It is gated as MetadataDestroy: every delete requires --dry-run first, then re-run with --digest --confirm within 5 minutes.

Follow the three-step flow documented in bulk-operations/SKILL.md ("Safe destructive workflow"). For schemas, the confirm value is the schema name:

hubspot schemas delete equipment --dry-run
# → digest=blast-... ; apply_command_hint shows: --digest  --confirm 'equipment'
hubspot schemas delete equipment --digest  --confirm equipment

Check hubspot history --since 24h --kind MetadataDestroy to audit recent schema deletes.

Using the schema after creation

Once a schema exists, all hubspot objects ... commands accept its name as --type (e.g. --type pets). Record CRUD, search, association, bulk upsert — all identical to standard objects. Don't re-implement those flows here; see bulk-operations/SKILL.md and crm-lookup.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: HubSpot
• Source: HubSpot/agent-cli-skills
• License: Apache-2.0

Install and usage instructions live in the source repository linked above.