Configuration

Keys are read from the environment when not passed explicitly, matching the Anthropic and OpenAI SDK conventions.

Environment variables

Variable	Purpose
`ANTHROPIC_API_KEY`	Anthropic provider key
`OPENAI_API_KEY`	OpenAI provider key
`FLUXCOMPUTE_KEY`	FluxCompute key: enables telemetry
`FLUX_TELEMETRY_URL`	Override the telemetry endpoint
`FLUX_GRAPH_EVENTS_URL`	Override the graph-events endpoint

Client options

All FluxClient arguments are keyword-only:

Option	Default	Purpose
`anthropic_key`	`None`	Anthropic API key. Required for Anthropic models
`openai_key`	`None`	OpenAI API key. Required for OpenAI models
`fluxcompute_key`	`None`	Enables telemetry and the dashboard
`baseline_model`	most expensive	The model savings are compared against
`telemetry`	`True`	Set `False` to disable both channels entirely
`content_capture`	`False`	Also ship response content. Requires telemetry and a key
`provider`	auto-detected	Force `"anthropic"` or `"openai"`

The provider is auto-detected when only one key is given; if both are set, Anthropic is used unless you pass provider explicitly.

python

client = FluxClient(
    fluxcompute_key="flx_...",          # or FLUXCOMPUTE_KEY
    baseline_model="claude-opus-4-8",  # what savings are measured against
    provider="anthropic",
)

Close the client when you're done so buffered telemetry is flushed:

python

await client.close()

Wire contract

The format the SDK sends is documented and versioned in docs/telemetry-contract.md. See Telemetry & privacy for what is and isn't included.

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