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List event properties for an event

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Returns properties bound to a specific event, including ingested-only
properties (those with is_in_schema: false). Use the is_in_schema
flag to detect whether a PATCH will succeed before issuing it.

get/v1/projects/{project_id}/events/{event_id}/event-properties

Authorizations

Authorizationstringrequired

http

Path parameters

project_idstringrequired

Amplitude project identifier, backed by the canonical app ID.

Example:12345
Constraints:pattern: ^[0-9]+$
event_idstringrequired

Public event identifier. This value is the event type name (the string used when sending the event to Amplitude).

Constraints:min length: 1

Query parameters

cursorstring

Opaque cursor from pagination.next_cursor on the previous response. Numeric offsets are capped by the underlying search index (10,000 results per query). Well-formed pagination stops before that window; requests whose cursor would exceed it return 400 pagination_not_supported.

Constraints:nullable
limitinteger

Number of items to return. Defaults to 50, max 200.

Default:50
Constraints:min: 1max: 200
qstring

Full-text search query.

Response

application/json
200· Successful response.
dataobject[]required
Show child attributes
idstringrequired

Stable resource identifier. Equal to property_name.

objectstringrequired

Resource-type discriminator. Always event_property.

project_idstringrequired
Constraints:pattern: ^[0-9]+$
event_typestringrequired

Event this property is bound to.

property_namestringrequired
descriptionstring
Constraints:nullable
is_hiddenbooleanrequired

Hidden from default UI surfaces and API listings.

is_in_schemabooleanrequired

Whether this property is part of the project's curated tracking plan. false means ingested-only (seen via SDK calls but never formally added). Properties with is_in_schema: false cannot be modified — PATCH returns 422 not_in_schema and metadata writes are rejected. POST implicitly transitions a property to is_in_schema: true.

data_typestring

Logical data type of a property. null means untyped at the source; clients should treat it as string for ingestion.

Allowed values:stringnumberbooleanobjectenumanynull
Constraints:nullable
is_array_typebooleanrequired
enum_valuesstring[]required
regexstring
Constraints:nullable
classificationsstring[]required

Data Access Controls (DAC) tags. Examples include PII, SENSITIVE, INTERNAL.

paginationobjectrequired
Show child attributes
next_cursorstringrequired

Cursor for the next page, or null on the last page. Chart list responses may stop before all project charts are enumerated because the search backend caps each query at 10,000 sorted hits.

Constraints:nullable
has_morebooleanrequired

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