ATB Python SDK

The ATB Python SDK writes tamper-evident audit bundles in the same format as the Go CLI; bundles written by the SDK are verifiable with atb verify.

Installation

pip install atb-sdk

Quick example

from atb import Bundle
from atb.event_types import (
    AI_MODEL_INVOKED_EVENT_TYPE,
    AI_REQUEST_RECEIVED_EVENT_TYPE,
)

bundle = Bundle()

bundle.append(
    AI_REQUEST_RECEIVED_EVENT_TYPE,
    {
        "request_id": "req-001",
        "actor_id_hash": "hash-user-01",
        "purpose_tag": "quickstart_demo",
    },
)

bundle.append(
    AI_MODEL_INVOKED_EVENT_TYPE,
    {
        "model_provider": "openai",
        "model_id": "gpt-4o-mini",
        "model_parameters_digest": "sha256-params-abc",
        "prompt_digest": "sha256-prompt-def",
    },
)

path = bundle.save("run.atb/bundle.atb")
print(path)

Supported event types

Event type constant name	Event type string
`BUNDLE_MANIFEST_EVENT_TYPE`	`atb.bundle.manifest`
`BUNDLE_ANCHOR_EVENT_TYPE`	`atb.bundle.anchor`
`BUNDLE_SIGNATURE_EVENT_TYPE`	`atb.bundle.signature`
`AI_REQUEST_RECEIVED_EVENT_TYPE`	`ai.request.received`
`AI_RESPONSE_SENT_EVENT_TYPE`	`ai.response.sent`
`AI_POLICY_DECISION_EVENT_TYPE`	`ai.policy.decision`
`AI_RETRIEVAL_EXECUTED_EVENT_TYPE`	`ai.retrieval.executed`
`AI_MODEL_INVOKED_EVENT_TYPE`	`ai.model.invoked`
`AI_MODEL_OUTPUT_EVENT_TYPE`	`ai.model.output`
`AI_ACTION_PRECOMMIT_EVENT_TYPE`	`ai.action.precommit`
`AI_ACTION_EXECUTED_EVENT_TYPE`	`ai.action.executed`
`AI_ACTION_COMMITTED_EVENT_TYPE`	`ai.action.committed`
`AI_HUMAN_APPROVAL_EVENT_TYPE`	`ai.human.approval`
`AI_JOB_SCHEDULED_EVENT_TYPE`	`ai.job.scheduled`
`AI_JOB_STARTED_EVENT_TYPE`	`ai.job.started`
`AI_JOB_STEP_EVENT_TYPE`	`ai.job.step`
`AI_JOB_COMPLETED_EVENT_TYPE`	`ai.job.completed`
`DATA_EXPORT_PRECOMMIT_EVENT_TYPE`	`data.export.precommit`
`DATA_EXPORT_EXECUTED_EVENT_TYPE`	`data.export.executed`

Profile support

To verify a bundle against a profile, use the Go CLI: atb verify --bundle <path> --profile <profile-id>. The Python SDK does not include a verifier.

LangChain integration

For LangChain middleware guidance, see docs/integrations/.

Licence

MIT.

Download files

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Source Distribution

atb_sdk-1.14.5.tar.gz (66.8 kB view details)

Uploaded Jun 13, 2026 Source

Built Distribution

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atb_sdk-1.14.5-py3-none-any.whl (55.9 kB view details)

Uploaded Jun 13, 2026 Python 3

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File metadata

Download URL: atb_sdk-1.14.5.tar.gz
Upload date: Jun 13, 2026
Size: 66.8 kB
Tags: Source
Uploaded using Trusted Publishing? Yes
Uploaded via: twine/6.1.0 CPython/3.13.13

File hashes

Hashes for atb_sdk-1.14.5.tar.gz
Algorithm	Hash digest
SHA256	`4e15f4aa403587972448cd668f0f7ae3e9802369bdb1e6a18d59b0e5552ba3c6`
MD5	`30dbd7ea52ca9b822fd1739d1927f084`
BLAKE2b-256	`fb0485087babc7a46a05b9e64cd455f17bd3ad3a54f5d38c23a59189963f48a6`

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Provenance

The following attestation bundles were made for atb_sdk-1.14.5.tar.gz:

Publisher: release.yml on pcguest/atb

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Statement:
- Statement type: https://in-toto.io/Statement/v1
- Predicate type: https://docs.pypi.org/attestations/publish/v1
- Subject name: atb_sdk-1.14.5.tar.gz
- Subject digest: 4e15f4aa403587972448cd668f0f7ae3e9802369bdb1e6a18d59b0e5552ba3c6
- Sigstore transparency entry: 1809261231
- Sigstore integration time: Jun 13, 2026
Source repository:
- Permalink: pcguest/atb@dcd130b108874a92587f51c268ec9069dbbc6a78
- Branch / Tag: refs/tags/v1.14.5
- Owner: https://github.com/pcguest
- Access: public
Publication detail:
- Token Issuer: https://token.actions.githubusercontent.com
- Runner Environment: github-hosted
- Publication workflow: release.yml@dcd130b108874a92587f51c268ec9069dbbc6a78
- Trigger Event: push