moss-crewai 1.0.0

MOSS cryptographic signing integration for CrewAI

moss-crewai

MOSS signing integration for CrewAI. Unsigned output is broken output.

Installation

pip install moss-crewai

Quick Start: Explicit Signing (Recommended)

Sign task outputs, crew results, and agent outputs:

from crewai import Crew, Agent, Task
from moss_crewai import sign_task_output, sign_crew_result, sign_agent_output

# Run your crew
crew = Crew(agents=[...], tasks=[...])
result = crew.kickoff()

# Sign the crew result
signed = sign_crew_result(result, agent_id="research-crew")
print(f"Signed: {signed.signature[:20]}...")

# Sign individual task outputs
for task_output in result.tasks_output:
    signed = sign_task_output(task_output, agent_id="research-crew", task="research")

Enterprise Mode

Set MOSS_API_KEY for automatic policy evaluation:

import os
os.environ["MOSS_API_KEY"] = "your-api-key"

from moss_crewai import sign_crew_result, enterprise_enabled

print(f"Enterprise: {enterprise_enabled()}")  # True

result = sign_crew_result(
    crew_output,
    agent_id="finance-crew",
    context={"user_id": "u123", "department": "finance"}
)

if result.blocked:
    print(f"Blocked by policy: {result.policy.reason}")

Verification

from moss_crewai import verify_envelope

verify_result = verify_envelope(result.envelope)
if verify_result.valid:
    print(f"Signed by: {verify_result.subject}")

All Functions

Function	Description
sign_task_output()	Sign a task's output
sign_task_output_async()	Async version
sign_agent_output()	Sign an agent's output
sign_agent_output_async()	Async version
sign_crew_result()	Sign full crew kickoff result
sign_crew_result_async()	Async version
verify_envelope()	Verify a signed envelope

Legacy API

The old auto-signing API is still available:

from moss_crewai import enable_moss, moss_wrap

enable_moss("moss:myteam:crewai")  # Global auto-signing
agent = moss_wrap(agent, "moss:team:researcher")  # Per-agent signing

Enterprise Features

Feature	Free	Enterprise
Local signing	✓	✓
Offline verification	✓	✓
Policy evaluation	-	✓
Evidence retention	-	✓
Audit exports	-	✓

Links

• moss-sdk - Core MOSS SDK
• mosscomputing.com - Project site

License

This package is licensed under the Business Source License 1.1.

• Free for evaluation, testing, and development
• Free for non-production use
• Production use requires a MOSS subscription
• Converts to Apache 2.0 on January 25, 2030