django-ag-ui 0.19.0

Django ↔ Pydantic-AI ↔ AG-UI integration: async view, tool registry, audit logger.

django-ag-ui

Wire a Pydantic-AI agent into any Django project and speak the AG-UI protocol to a browser — a streaming agent endpoint, a typed tool registry, and the plumbing in between. No admin specifics; that lives in the downstream django-admin-agent, and the browser half is @artooi/ag-ui-web-component.

• Async AG-UI endpoint — DjangoAGUIView wraps Pydantic-AI's AGUIAdapter and returns a StreamingHttpResponse of AG-UI events (SSE). Conversation state rides in each request, so there's no cross-request session store and multi-worker deployments are safe by default.
• Typed tool registry — register plain callables with @tool; JSON Schema is derived from their signatures. destructive= / category= / confirm= / summary= metadata surface as x-destructive / x-category / x-confirm / x-summary extensions for client-side gating.
• Configurable agent — AgentConfig + the DJANGO_AG_UI settings cover the model, MODEL_SETTINGS, RETRIES, external TOOLSETS / CAPABILITIES, an explicit API_KEY / PROVIDER credential path, and an AGENT_FACTORY escape hatch for full control of construction.
• Authentication hooks — require_authenticated=True fails closed (401) for anonymous requests, and a get_user(request) hook establishes the user tools, the drf-mcp bridge, and conversation ownership act as.
• One-object mounting — an AGUIServer(registry, …) config object exposing a namespaced .urls, mounted the admin.site way with path("agent/", server.urls). It builds the agent view and every sub-view from the registry passed once, and forwards one auth policy to all of them.
• Skills — a SkillRegistry / SkillSpec catalog of pre-defined prompts served at <prefix>skills/ (via AGUIServer(..., skills=...)), surfaced by the web component as chips and a /-command palette.
• Tool metadata catalog — a read-only ToolsView served at <prefix>tools/ (mounted automatically by AGUIServer), giving the web component (data-tools-url) friendly card labels for server-side tools whose schema never reaches the browser.
• Audit boundary — an AuditLogger Protocol (Null / Logging shipped, pluggable by dotted path) records every server-side tool call.
• Opt-in conversation persistence — a ConversationStore Protocol with a no-op default, a session-backed store, and an abstract model-backed base.
• Thread history — the store can list and rename a user's threads, and a ThreadsView served at <prefix>threads/ (mounted by AGUIServer when a store is active) backs a chat-history drawer (owner-scoped GET list / GET messages / PATCH rename / DELETE). An opt-in django_ag_ui.contrib.store app ships a ready-made durable model + DefaultConversationStore (add it to INSTALLED_APPS and migrate); the base package still ships no model.
• File uploads — an AttachmentStore Protocol (owner-scoped, off by default) with an AttachmentsView served at <prefix>attachments/ (mounted by AGUIServer when a store is active; server-validated POST upload / owner-checked GET download / DELETE). Uploads travel as lightweight refs, and a per-request read_attachment tool lets the agent read the bytes server-side. The same contrib.store app ships a Storage-backed DefaultAttachmentStore.
• Voice input — a TranscriptionBackend Protocol (off by default) with a TranscribeView served at <prefix>transcribe/ (mounted by AGUIServer when a backend is active; multipart audio in, {"text"} out). An opt-in OpenAITranscriptionBackend works against any OpenAI-compatible /audio/transcriptions endpoint (the [openai] extra).
• Model reasoning — when a reasoning model is configured to think (via MODEL_SETTINGS), its chain-of-thought streams to the client as standard AG-UI reasoning events (pure pass-through); FORWARD_REASONING = False keeps it server-side.
• Reach external tools — compose any Pydantic-AI toolset, including an in-process drf-mcp bridge (the [drf-mcp] extra) so the agent can query DRF-exposed data.
• drf-services specs as tools, no MCP hop — point SERVICE_SPECS at a name → spec mapping and the agent calls them in-process via djangorestframework-pydantic-ai's SpecCapability (the [spec-tools] extra) — permission-checked, acting as the logged-in user, with the spec conventions taught to the model.
• 100% test coverage, type-checked, Python 3.10–3.14, Django 4.2–6.0.

📖 Full documentation: https://artui.github.io/django-ag-ui/

pip install "django-ag-ui[anthropic]"   # or [openai], or [google]
# or, with uv:
uv add "django-ag-ui[anthropic]"

The core dep is pydantic-ai-slim[ag-ui], which ships no model-provider library — pick one via a provider extra (anthropic / openai / google).

ASGI required. The agent endpoint streams Server-Sent Events, which the sync WSGI worker can't serve — deploy under Daphne / Uvicorn.

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Quick start

Register a read-only tool, mount the endpoint, and point a browser AG-UI client at it.

# tools.py
from django_ag_ui import ToolRegistry, tool

registry = ToolRegistry()


@tool(registry)
def count_active_users() -> int:
    """How many users are currently active."""
    from django.contrib.auth import get_user_model

    return get_user_model().objects.filter(is_active=True).count()

# urls.py
from django.urls import path

from django_ag_ui import AGUIServer

from .tools import registry

urlpatterns = [
    path("agent/", AGUIServer(registry).urls),
]

# settings.py
DJANGO_AG_UI = {
    "MODEL": "anthropic:claude-sonnet-4.6",   # any Pydantic-AI model string
    # "API_KEY": os.environ["ANTHROPIC_API_KEY"],  # else inferred from env
    # "MODEL_SETTINGS": {"temperature": 0.2},
}

POSTing an AG-UI RunAgentInput to /agent/ now streams the agent's run. Frontend-declared tools in the request are merged into the agent's catalog automatically; server-side tools run in-process. See the docs for the full settings reference, the persistence stores, and the drf-mcp bridge.

License

MIT — see LICENSE.