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Modaic Python SDK

The official, HTTP-only Python client for the public Modaic API. It includes matching synchronous and asynchronous clients and never invokes Git or reads or writes repository files.

Install

pip install modaic

Set an API key from https://modaic.dev/settings/keys:

export MODAIC_API_KEY="mdc_..."

Quickstart

from modaic import Modaic

with Modaic() as modaic:
    result = modaic.decisions.create(
        state={
            "ticket": "I was charged twice for order 4832. Please refund one charge."
        },
        model="typesafe/jev-latest",
        questions={
            "needs_refund": {
                "type": "noul",
                "instructions": "Should this customer receive a refund?",
                "criteria": {
                    "true": "A duplicate or invalid charge should be refunded.",
                    "false": "The charge is valid or more information is required.",
                },
            },
            "priority": {
                "type": "choice",
                "instructions": "Choose the support priority.",
                "criteria": {
                    "low": "No financial or time-sensitive impact.",
                    "normal": "Routine customer issue.",
                    "high": "Financial impact or an urgent blocker.",
                },
            },
        },
        idempotency_key="ticket-4832-v1",
    )

print(result.answers["priority"])

The API URL defaults to https://modaic.dev/api/v1. Set MODAIC_API_URL to override it, or pass base_url to the client. The client option takes precedence over the environment variable. This applies to both Modaic and AsyncModaic.

For a local server, pass the versioned API URL explicitly:

modaic = Modaic(api_key="mdc_...", base_url="http://localhost:3001/v1")

Question objects and typed responses

Use Noul, Choice, and Score to define questions. Dictionary questions still work, including alongside question objects. Both forms are accepted by decisions.create, models.create, and models.update.

Choice requires at least one option; Score requires at least one rubric level. Empty choice criteria sent as a dictionary are rejected by the API with 422 and code validation_error.

Define a Pydantic response model by extending DecisionResponse with answer fields matching your question names:

from modaic import DecisionResponse, Modaic, Noul, NoulAnswer


class BillingResponse(DecisionResponse):
    billing: NoulAnswer


with Modaic() as modaic:
    result = modaic.decisions.create(
        model="typesafe/jev-latest",
        state="I was charged twice.",
        questions={"billing": Noul(instructions="Is this about billing?")},
        response_model=BillingResponse,
    )
    assert result.billing == result.nouls["billing"]
    print(result.billing.noul)
    print(result.request_id)

Use ChoiceAnswer and ScoreAnswer for choice and score fields. answers retains every answer, with nouls, choices, and scores providing typed views. Usage and capture metadata remain available. Required answer fields are validated; missing answers or mismatched types raise ModaicConnectionError. Use Pydantic Field(alias="question-name") for names that are not Python identifiers. Keep response metadata names, such as model and usage, reserved.

response_model also works with AsyncModaic and model.decisions.create. It controls local response parsing only and is not sent to the API. The request_id comes from the HTTP response header and is excluded from model_dump() and model_dump_json().

Async

The async client has the same resources and methods:

import asyncio
from modaic import AsyncModaic


async def main() -> None:
    async with AsyncModaic() as modaic:
        models = await modaic.models.list()
        print([model.name for model in models.models])


asyncio.run(main())

Model-bound resources

Models returned by models.create, models.get, and models.update can run decisions directly:

with Modaic() as modaic:
    model = modaic.models.get(workspace="acme", model="support-priority")
    result = model.decisions.create(
        state={"ticket": "Please refund my duplicate charge."},
    )
    examples = model.examples.list(page_size=10)
    batches = model.jobs.batch_decisions.list()
    alignments = model.jobs.alignments.list()

models.get includes configuration with the model and questions saved on the default branch (None until the model has a manifest), so you can diff before updating. models.update with questions that already match is a no-op: it returns unchanged=True, a commit whose commit_sha equals previous_sha, and the stored configuration. Nothing is committed and the checkpoint is not reset.

With AsyncModaic, await both calls. The bound method accepts every decision option except model and uses the same client; keep that client open while running decisions. Pass revision to pin a version. model_dump() and model_dump_json() contain only response data. The top-level modaic.decisions.create remains available.

model.examples exposes ingest, list, get, annotate, and list_decisions without a model ID argument. model.jobs.alignments and model.jobs.batch_decisions expose model-bound create and list. Use the top-level job resources to retrieve, wait for, or cancel a job by its ID.

Job progress

Pass progress=True to either job resource's wait() method for a tqdm display:

finished = modaic.batch_decisions.wait(job.id, progress=True)
finished = modaic.alignments.wait(alignment.id, progress=True)

With AsyncModaic, use await with the same option. Progress is off by default. Batch jobs show processed examples and failures; alignment shows its stage and metric-call budget usage, not an overall completion percentage. Updates use the existing polling interval. Timing out stops waiting without cancelling the job.

Resources

Resource Methods
decisions create
models list, create, get, update, delete
examples ingest, list, get, annotate, list_decisions
batch_decisions create, list, get, cancel, wait
alignments create, list, get, logs, cancel, wait

Responses are Pydantic models. Python attributes use snake_case even when the wire format uses camelCase.

Errors

Non-2xx responses raise ModaicAPIError, which exposes status_code, code, request_id, details, and the decoded response body. Network failures raise ModaicConnectionError; request and polling deadlines raise ModaicTimeoutError.

See the complete API documentation at https://docs.modaic.dev.

Release files for modaic 0.49.0

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