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List capability descriptors

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GET
/v1/capabilities
curl --request GET \
--url 'https://example.com/v1/capabilities?limit=25' \
--header 'Authorization: Bearer <token>'

Cursor-paginated. Read-only — capabilities are framework-declared + deployment-extended at boot time, not tenant-created via HTTP. Optional ?feature= filters by prefix on feature.

limit
integer
default: 25 >= 1 <= 100

1..100. Default 25.

cursor
string

Where the previous page ended: its nextCursor, as it came. A runtime that seals cursors takes one only for the same list, filters and caller, within a day; otherwise 400 bad-input, and the list starts again without it. Absent → first page.

feature
string

For /v1/capabilities: prefix match on feature. For /v1/providers: exact match against metadata.features[].

Page of capability descriptors.

Media typeapplication/json
object
data
required
Array<object>
object
id
required

Stable identifier — e.g. feature:<feature>; deployments MAY pick other conventions for extension entries.

string
feature
required
One of:
string
Allowed values: structured-output vision audio-input audio-output tool-use parallel-tool-use thinking long-context code-execution web-search file-search streaming batch
description
required
string
kind

Capability kind (llm-inference, embedding, gpu-compute, sandbox-exec, browser-session, …). Absent = llm-inference.

string
paramsSchema

Optional JSON Schema fragment describing the parameters an agent may attach to { feature, params } in a Requirement.

object
key
additional properties
any
providers

The tenant’s registered providers with a model that has the feature, and those models. Absent from servers that don’t read the provider registry; [] when no provider of the tenant has one.

Array<object>

A provider of the tenant with a model that has the feature.

object
providerId
required
string
models
required

Its models that have it.

Array<string>
nextCursor
string
hasMore
required
boolean
Example
{
"data": [
{
"feature": "structured-output"
}
]
}

Malformed query parameter.

Media typeapplication/json
object
error
required
object
code
required

Stable machine-readable discriminant. Values match domain error codes (see docs/API-ROUTE-CONVENTIONS.md §4.3).

string
message
required
string
details

Optional, kind-specific.

object
key
additional properties
any
requestId
required

Server-assigned request id; also echoed via X-Request-Id header.

string
Examplegenerated
{
"error": {
"code": "example",
"message": "example",
"details": {},
"requestId": "example"
}
}

Missing / malformed / expired / revoked bearer token.

Media typeapplication/json
object
error
required
object
code
required

Stable machine-readable discriminant. Values match domain error codes (see docs/API-ROUTE-CONVENTIONS.md §4.3).

string
message
required
string
details

Optional, kind-specific.

object
key
additional properties
any
requestId
required

Server-assigned request id; also echoed via X-Request-Id header.

string
Examplegenerated
{
"error": {
"code": "example",
"message": "example",
"details": {},
"requestId": "example"
}
}

See also