finault 4.3.0

The economic proof layer for AI — sealed receipts, Named Chains, per-customer margins, LiteLLM integration

Finault Python SDK

Official Python SDK for Finault - The economic proof layer for AI

Installation

pip install finault

Requires Python 3.8+.

Quick Start

Initialize the Client

import finault

client = finault.FinaultClient(api_key="fk_live_...")

Route AI Requests Through Finault

response = client.chat.completions.create(
    model="gpt-4o",
    messages=[{"role": "user", "content": "What is machine learning?"}],
    provider_api_key="sk-..."  # Your OpenAI API key
)

print(f"Response: {response.content}")
print(f"Cost: ${response.cost}")
print(f"Tokens: {response.tokens}")
print(f"Request ID: {response.request_id}")

LiteLLM Integration

Use Finault with LiteLLM for multi-provider support:

from finault import FinaultLiteLLMCallback
import litellm

# Initialize Finault callback
finault_callback = FinaultLiteLLMCallback(
    api_key="fk_live_...",
    organization_id="org_123abc"
)

# Route all LiteLLM calls through Finault
litellm.callbacks = [finault_callback]

# Use LiteLLM as normal
response = litellm.completion(
    model="gpt-4o",
    messages=[{"role": "user", "content": "Hello"}],
    api_key="sk-..."
)

# Finault automatically seals the call
print(f"Cost tracked: ${finault_callback.last_seal.cost_usd}")
print(f"Seal ID: {finault_callback.last_seal.seal_id}")

Named Chains

Organize seals into scoped audit trails:

# Create a response with multiple chain memberships
response = client.chat.completions.create(
    model="gpt-4o",
    messages=[{"role": "user", "content": "Analyze sales data"}],
    provider_api_key="sk-...",
    # Assign to multiple chains for organizational scoping
    finault_chains=["product:analytics", "customer:acme-corp"]
)

print(f"Seal belongs to chains: {response.chains}")

# List all active chains
chains = client.chains.list()
for chain in chains:
    print(f"{chain.id}: {chain.seal_count} seals")

# Export a specific chain for offline verification
export = client.chains.export("product:analytics", format="jsonl")
with open("audit-trail.jsonl", "w") as f:
    f.write(export)

# Verify a chain server-side
result = client.chains.verify("product:analytics")
print(f"Chain valid: {result.valid}")
print(f"Total cost: ${result.total_cost_usd}")

CLI Usage

The Python SDK includes a CLI for common operations:

# Initialize
finault init --api-key fk_live_...

# Create a seal
finault seal create \
  --model gpt-4o \
  --cost 0.015 \
  --provider openai

# List chains
finault chains list

# Export a chain
finault chains export org --format json > audit.json

# Verify a chain
finault chains verify product:analytics

Stream Chat Completions

stream = client.chat.completions.create(
    model="gpt-4o",
    messages=[{"role": "user", "content": "Write a poem about AI"}],
    provider_api_key="sk-...",
    stream=True
)

for chunk in stream:
    print(chunk.delta.get("content", ""), end="", flush=True)

Budget Management

Create a Budget

budget = client.budgets.create(
    name="GPT-4 Monthly Budget",
    limit=1000.0,
    period="monthly"
)
print(f"Budget ID: {budget.id}")

List Budgets

budgets = client.budgets.list()
for budget in budgets:
    print(f"{budget.name}: ${budget.spent}/${budget.limit}")
    print(f"Utilization: {budget.utilization_percent:.1f}%")
    print(f"Remaining: ${budget.remaining}")

Get Budget Details

budget = client.budgets.get("budget_123")
print(f"Status: {budget.status}")
print(f"Alert count: {len(budget.alerts)}")

Cost Anomaly Detection

List Detected Anomalies

anomalies = client.anomalies.list()
for anomaly in anomalies:
    print(f"[{anomaly.severity}] {anomaly.description}")
    print(f"Variance: {anomaly.percentage_variance:.1f}%")

Filter by Severity

critical_anomalies = client.anomalies.list(severity="critical")

Acknowledge an Anomaly

anomaly = client.anomalies.acknowledge("anomaly_123")
print(f"Acknowledged at: {anomaly.acknowledged_at}")

Financial Close Pack

Generate a Close Pack

pack = client.closepack.generate(period="2026-02")
print(f"Period: {pack.period}")
print(f"Total Spend: ${pack.total_spend}")
print(f"Summary: {pack.summary}")
print(f"Journal Entries: {len(pack.journal_entries)}")

List Previous Close Packs

packs = client.closepack.list()
for pack in packs:
    print(f"{pack.period}: ${pack.total_spend} ({pack.status})")

API Key Management

Create an API Key

key = client.keys.create(name="Production Gateway")
print(f"Key ID: {key.id}")
# Note: The full key is only shown once upon creation

List API Keys

keys = client.keys.list()
for key in keys:
    print(f"{key.name} (Preview: {key.key_preview})")

Revoke an API Key

client.keys.revoke("key_123")
print("Key revoked successfully")

Dashboard & Insights

Get Overview Metrics

metrics = client.dashboard.overview()
print(f"Total Spend: ${metrics.total_spend}")
print(f"Trend: {metrics.spend_trend:+.1f}%")
print(f"Requests: {metrics.request_count}")
print(f"Avg Cost/Request: ${metrics.average_cost_per_request:.4f}")

print("\nTop Models:")
for model in metrics.top_models:
    print(f"  {model['name']}: {model['usage']} calls, ${model['cost']}")

Get Insights and Recommendations

insights = client.dashboard.insights()
print("Key Findings:")
for finding in insights.key_findings:
    print(f"  - {finding}")

print("\nRecommendations:")
for rec in insights.recommendations:
    print(f"  - {rec}")

System Health & Pricing

Check API Health

health = client.health.status()
print(f"Status: {health.status}")
print(f"Version: {health.version}")

Get Pricing Information

pricing = client.pricing.get()
print("Model Pricing:")
for model, rates in pricing.models.items():
    print(f"  {model}: ${rates['input']}/1K input, ${rates['output']}/1K output")

Error Handling

from finault import (
    FinaultError,
    AuthenticationError,
    RateLimitError,
    ValidationError,
    APIError,
)

try:
    response = client.chat.completions.create(...)
except AuthenticationError as e:
    print(f"Authentication failed: {e.message}")
    print(f"Request ID: {e.request_id}")
except RateLimitError as e:
    print(f"Rate limited. Retry after {e.retry_after}s")
except ValidationError as e:
    print(f"Validation error: {e.message}")
    print(f"Field errors: {e.field_errors}")
except APIError as e:
    print(f"API error: {e.message}")
    print(f"Status: {e.status_code}")

Context Manager

Use the client as a context manager for automatic cleanup:

with finault.FinaultClient(api_key="fk_live_...") as client:
    response = client.chat.completions.create(...)
    print(response.cost)

Configuration Options

client = finault.FinaultClient(
    api_key="fk_live_...",
    base_url="https://api.finault.ai",  # Custom base URL
    timeout=30.0,  # Request timeout in seconds
    max_retries=3,  # Automatic retry attempts for 429/5xx
)

Retry Logic

The SDK automatically retries requests that fail with:

• 429 (Rate Limit)
• 500, 502, 503, 504 (Server Errors)

Retries use exponential backoff starting at 1 second.

Streaming

Chat completions support streaming for real-time token delivery:

stream = client.chat.completions.create(
    model="gpt-4o",
    messages=[...],
    provider_api_key="sk-...",
    stream=True
)

for chunk in stream:
    if chunk.delta.get("content"):
        print(chunk.delta["content"], end="", flush=True)

API Reference

Resources

• client.chat.completions.create() - Create a chat completion
• client.closepack.generate() - Generate a financial close pack
• client.closepack.list() - List previous close packs
• client.budgets.create() - Create a new budget
• client.budgets.list() - List all budgets
• client.budgets.get() - Get a specific budget
• client.budgets.update() - Update a budget
• client.anomalies.list() - List detected anomalies
• client.anomalies.get() - Get specific anomaly
• client.anomalies.acknowledge() - Mark anomaly as acknowledged
• client.keys.create() - Create an API key
• client.keys.list() - List API keys
• client.keys.revoke() - Revoke an API key
• client.dashboard.overview() - Get dashboard overview
• client.dashboard.insights() - Get dashboard insights
• client.health.status() - Check API health
• client.pricing.get() - Get pricing information

API Reference

Complete API documentation is available at:

• Docs: https://docs.finault.ai
• SDK Reference: https://docs.finault.ai/sdk/python
• OpenAPI Spec: https://api.finault.ai/openapi.yaml

Support

For issues, questions, or feedback:

• Email: [e-mail]
• GitHub Issues: https://github.com/finault/finault-python/issues
• Discussions: https://github.com/finault/finault-python/discussions
• Discord: https://discord.gg/finault

License

MIT License - see LICENSE file for details