CSS (Closed-Source Software) Inference Service
This service serves closed source models via
a CSSInferenceWorkflow
object, encapsulating the backend, preprocessing, and postprocessing logic
Infernet Configuraton
The service can be configured as part of the overall Infernet configuration
in config.json. For documentation on the overall configuration,
consult the infernet node documentation
{
"log_path": "infernet_node.log",
//...... contents abbreviated
"containers": [
{
"id": "css_inference_service",
"image": "your_org/css_inference_service:latest",
"external": true,
"port": "3000",
"allowed_delegate_addresses": [],
"allowed_addresses": [],
"allowed_ips": [],
"command": "--bind=0.0.0.0:3000 --workers=2",
"env": {
"CSS_INF_WORKFLOW_POSITIONAL_ARGS": "[\"OPENAI\", \"completions\"]",
"CSS_INF_WORKFLOW_KW_ARGS": "{}",
"CSS_REQUEST_TRIES": "3",
"CSS_REQUEST_DELAY": "3",
"CSS_REQUEST_MAX_DELAY": "10",
"CSS_REQUEST_BACKOFF": "2",
"CSS_REQUEST_JITTER": "[0.5, 1.5]"
}
}
]
}
Supported Providers
The service supports three providers, each requiring an API key specified as an environment variable:
PERPLEXITYAI_API_KEY- API key for PerplexityAIGOOSEAI_API_KEY- API key for GooseAIOPENAI_API_KEY- API key for OpenAI
Environment Variables
CSS_INF_WORKFLOW_POSITIONAL_ARGS
- Description: The first argument is the name of the provider, and the second argument is the endpoint.
- Default:
["OPENAI", "completions"]
CSS_INF_WORKFLOW_KW_ARGS
- Description: Any argument passed here will be defaulted when sending to the CSS provider.
- Default:
{} - Example:
{"retry_params": {"tries": 3, "delay": 3, "backoff": 2}}
CSS_REQUEST_TRIES
- Description: The number of retries for the inference workflow.
- Default:
3
CSS_REQUEST_DELAY
- Description: The delay (in seconds) between retries.
- Default:
3
CSS_REQUEST_MAX_DELAY
- Description: The maximum delay (in seconds) between retries.
- Default:
10
CSS_REQUEST_BACKOFF
- Description: The backoff (in seconds) between retries.
- Default:
2
CSS_REQUEST_JITTER
- Description: The jitter (in seconds) to add to requests.
- Default:
[0.5, 1.5]
Usage
Inference requests to the service that orginate offchain can be initiated with python
or cli by utilizing the infernet_client
library, as well as with HTTP requests against the infernet node directly (using a client
like cURL).
The schema format of
an infernet_client JobRequest
looks like the following:
class JobRequest(TypedDict):
"""Job request.
Attributes:
containers: The list of container names.
data: The data to pass to the containers.
"""
containers: list[str]
data: dict[str, Any]
requires_proof: NotRequired[bool]
Also, the schema format of
a infernet_client JobResult
looks like the following:
class JobResult(TypedDict):
"""Job result.
Attributes:
id: The job ID.
status: The job status.
result: The job result.
intermediate: Job result from intermediate containers.
"""
id: str
status: JobStatus
result: Optional[ContainerOutput]
intermediate: NotRequired[list[ContainerOutput]]
class ContainerOutput(TypedDict):
"""Container output.
Attributes:
container: The container name.
output: The output of the container.
"""
container: str
output: Any
Web2 Request
Please Note: The examples below assume that you have an infernet node running
locally on port 4000.
from infernet_client.node import NodeClient
client = NodeClient("http://127.0.0.1:4000")
job_id = await client.request_job(
"SERVICE_NAME",
{
"provider": "OPENAI",
"endpoint": "completions",
"model": "gpt-4",
"params": {
"endpoint": "completions",
"messages": [
{"role": "user", "content": "give me an essay about cats"}
],
},
# note the ability to add extra_args to the request.
"extra_args": {
"max_tokens": 10,
"temperature": 0.5,
},
},
)
result:str = (await client.get_job_result_sync(job_id))["result"]["output"]
# Note that the sync flag is optional and will wait for the job to complete.
# If you do not pass the sync flag, the job will be submitted and you will receive a job id, which you can use to get the result later.
infernet-client job -c SERVICE_NAME -i input.json --sync
input.json looks like this:
Web3 Request (Onchain Subscription)
You will need to import the infernet-sdk in your requesting contract. In this example
we showcase the Callback
pattern, which is an example of a one-off subscription. Please refer to
the infernet-sdk documentation for
further details.
Input requests should be passed in as an encoded byte string. Here is an example of how to generate this for a CSS inference request:
from infernet_ml.utils.css_mux import ConvoMessage
from infernet_ml.utils.codec.css import (
CSSEndpoint,
CSSProvider,
encode_css_completion_request,
)
provider = CSSProvider.OPENAI
endpoint = CSSEndpoint.completions
model = "gpt-3.5-turbo-16k"
messages = [
ConvoMessage(role="user", content="give me an essay about cats")
]
encoded = encode_css_completion_request(provider, endpoint, model, messages)
You then can pass this encoded byte string as an input to the contract function, let's
say your contract has a function called getLLMResponse(bytes calldata input):
function getLLMResponse(bytes calldata input) public {
redundancy = 1;
paymentToken = address(0);
paymentAmount = 0;
wallet = address(0);
verifier = address(0);
_requestCompute(
"my-css-inference-service",
input,
redundancy,
paymentToken,
paymentAmount,
wallet,
verifier
);
}
You can call this function with the encoded bytestring from python like so:
from web3 import Web3
# Assuming you have a contract instance
contract = w3.eth.contract(address=contract_address, abi=contract_abi)
# Call the function, `encoded` here is the same as the one generated above
tx_hash = contract.functions.getLLMResponse.call(encoded).transact()
Delegated Subscription Request
Please note: the examples below assume that you have an infernet node running locally
on port 4000.
from infernet_client.node import NodeClient
from infernet_client.chain_utils import Subscription, RPC
sub = Subscription(
owner="0x...",
active_at=int(time()),
period=0,
frequency=1,
redundancy=1,
containers=["SERVICE_NAME"],
lazy=False,
verifier=ZERO_ADDRESS,
payment_amount=0,
payment_token=ZERO_ADDRESS,
wallet=ZERO_ADDRESS,
)
client = NodeClient("http://127.0.0.1:4000")
nonce = random.randint(0, 2**32 - 1)
await client.request_delegated_subscription(
sub=sub,
rpc=RPC("http://127.0.0.1:8545")
coordinator_address=global_config.coordinator_address,
expiry=int(time() + 10),
nonce=nonce,
private_key="0x...",
data={
"provider": "OPENAI",
"endpoint": "completions",
"model": "gpt-4",
"params": {
"endpoint": "completions",
"messages": [
{"role": "user", "content": "give me an essay about cats"}
],
},
},
)
infernet-client sub --rpc_url http://some-rpc-url.com --address 0x19f...xJ7 --expiry 1713376164 --key key-file.txt \
--params params.json --input input.json
# Success: Subscription created.
params.json looks like this:
{
"owner": "0x00Bd138aBD7....................", // Subscription Owner
"active_at": 0, // Instantly active
"period": 3, // 3 seconds between intervals
"frequency": 2, // Process 2 times
"redundancy": 2, // 2 nodes respond each time
"containers": ["SERVICE_NAME"], // comma-separated list of containers
"lazy": false,
"verifier": "0x0000000000000000000000000000000000000000",
"payment_amount": 0,
"payment_token": "0x0000000000000000000000000000000000000000",
"wallet": "0x0000000000000000000000000000000000000000",
}
input.json looks like this: