Anthropic Providers Update - September 2026

We've released an update to the StackQL anthropic provider, regenerated from the current Claude API specification. The provider now covers 12 services, 27 resources and 108 operations (up from 11, 26 and 103 in the July release). Changes in this release:

• A new dreams service
• Files and skills moved to their generally available endpoints
• Workspace-scoped queries on most operations through the anthropic-workspace-id parameter

The anthropic_admin provider (6 services, 11 resources, 27 operations) is unchanged in this release.

Dreams

Dreams are asynchronous memory-consolidation jobs: a dream reads a memory store and a set of session transcripts and writes consolidated memories into an output store. The service is a research preview on the Anthropic side, so the endpoints return a 404 for keys that are not enrolled. The dreams resource maps the surface as follows:

Method	SQL verb	Operation
list, get	SELECT	list dreams (cursor-paginated, walked automatically), get a dream
create	INSERT	start a dream over one or more inputs
cancel, archive	EXEC	lifecycle operations

Dreams and their status as rows:

SELECT id, status, JSON_ARRAY_LENGTH(inputs) AS input_count, created_at, ended_at
FROM anthropic.dreams.dreams
ORDER BY created_at DESC;

Starting one is an INSERT. inputs and model are JSON values that the provider passes through as structured request fields:

INSERT INTO anthropic.dreams.dreams (inputs, model, instructions)
SELECT '[{"type": "memory_store", "memory_store_id": "memstore_01..."}]',
       '{"id": "claude-opus-5"}',
       'Consolidate project decisions and open questions.'
RETURNING id, status;

Files and skills on GA endpoints

The Files API and the Skills API are generally available. The files and skills services now call the GA endpoints (/v1/files, /v1/skills) instead of the beta ones, and no longer send an anthropic-beta header. Resources, methods and SQL verbs are unchanged, so existing queries keep working. One behavioural change: the files list is now cursor-paginated and the provider walks the pages automatically.

SELECT id, filename, mime_type, size_bytes, created_at
FROM anthropic.files.files
ORDER BY created_at DESC;

SELECT id, display_name, JSON_EXTRACT(source, '$.type') AS source, latest_version_id, updated_at
FROM anthropic.skills.skills
ORDER BY updated_at DESC;

Skill versions are a separate resource keyed by the skill:

SELECT id, skill_id, name, description, created_at
FROM anthropic.skills.versions
WHERE skill_id = 'xlsx';

Uploading a file or creating a skill version is a multipart request, which SQL cannot express; those two methods remain documented as EXEC operations, and the rest of each resource (list, get, delete) is plain SQL.

Workspace-scoped queries

The Claude API added an optional anthropic-workspace-id header to most operations, for credentials that can act on more than one workspace. The provider exposes it as an optional parameter on around 110 operations. It is a hyphenated name, so it is double-quoted in SQL:

SELECT id, display_name, created_at
FROM anthropic.models.models
WHERE "anthropic-workspace-id" = 'wrkspc_01CZkZaBF1tNoB5wlCeusgy';

The workspace ids are the ones the anthropic_admin provider lists:

SELECT id, name, archived_at
FROM anthropic_admin.workspaces.workspaces;

A key that belongs to a single workspace can omit the parameter. The API validates the value: a malformed id is rejected with a 400.

Under the hood

The provider is generated from the OpenAPI specification that Anthropic now bundles with its SDKs. That specification grew from 126 to 244 operations since July, and the SDKs' configured endpoint count from 116 to 201. Beyond the changes above, the growth is the beta twins of the GA files and skills endpoints and the Admin API, which the specification now models but which needs an org-scoped admin key and belongs to the anthropic_admin provider. Every operation in the specification is either mapped or listed in a documented exclusion list, and the build fails when the two do not add up.

Every documented example query runs in the provider's test suite, and each generated docs page now shows the date it was last regenerated.

Authentication

Unchanged. The two providers use different key types, which are disjoint by design:

# anthropic - workspace-scoped Claude API key
export ANTHROPIC_API_KEY=sk-ant-api...

# anthropic_admin - org-scoped Admin API key (created by org admins)
export ANTHROPIC_ADMIN_KEY=sk-ant-admin...

Get started

Pull the latest provider from the public registry:

registry pull anthropic;

Provider docs, including required parameters and example queries for every resource, are at anthropic-provider.stackql.io and anthropic-admin-provider.stackql.io. Visit us on GitHub and let us know how you're using it.