agent-skills/skills/graph-based-node-orchestration/SKILL.md

name, version, description, inputs, steps, outputs, tags, metadata

name	version	description	inputs	steps	outputs	tags	metadata
graph-based-node-orchestration	1.0.0	Build a typed node graph that processes data through a sequence of operations and produces a final result	NIM_MODEL constant (e.g., 'nim:meta/llama-3.1-8b-instruct') for the LLM model blacknode package with Graph, Node, and cook functionality Python script defining node types with inputs/outputs and connecting them via edges	Import required modules (blacknode as bn, NIM_MODEL) and ensure API keys are available via require_nim_api_key() Create a bn.Graph() instance to hold all nodes and their connections Define individual nodes with specific input/output parameters (e.g., Text node with 'value' input, LLMAgent node with model parameter, Output node with 'value' output) Connect nodes together using edge definitions (from_port -> to_port) to establish data flow Execute the graph using g.cook() to run the pipeline and process data through the node chain Extract the final result from the output node to complete the workflow	A fully constructed graph with typed nodes and defined connections Executed result (e.g., processed text, summary, or other output) from the final node A reusable pattern that can be adapted to different models, hardware, or task types		source_repo extracted_at confidence https://github.com/temiroff/Blacknode.git 0.95

graph-based-node-orchestration

Build a typed node graph that processes data through a sequence of operations and produces a final result

Setup

Dependencies:

pip install blacknode >= 0.3.0 Python >= 3.11 NVIDIA NIM API key (optional but recommended) Anthropic, OpenAI, or other LLM models

Setup steps:

1. Clone the repository and install dependencies: pip install -e .
2. Set NVIDIA_API_KEY or other required API keys in .env
3. Run the example script: python examples/hello_agent.py
4. For production, configure hardware pairing and deploy via the blacknode CLI

Key Files

• examples/converted_nvidia_nim.py - Full graph with Model, Text, LLMAgent, Output nodes
• examples/hello_agent.py - Minimal agent example connecting Literal → LLMAgent → Print
• blacknode/core - Graph and node implementation (internal)

Steps

1. Import required modules (blacknode as bn, NIM_MODEL) and ensure API keys are available via require_nim_api_key()
2. Create a bn.Graph() instance to hold all nodes and their connections
3. Define individual nodes with specific input/output parameters (e.g., Text node with 'value' input, LLMAgent node with model parameter, Output node with 'value' output)
4. Connect nodes together using edge definitions (from_port -> to_port) to establish data flow
5. Execute the graph using g.cook() to run the pipeline and process data through the node chain
6. Extract the final result from the output node to complete the workflow

Implementation Details

g = bn.Graph()

model = g.node('Model', **{'value': 'nim:meta/llama-3.1-8b-instruct'})

agent = g.node('LLMAgent', **{model})

result = g.cook(output, 'value')

Inputs

• NIM_MODEL constant (e.g., 'nim:meta/llama-3.1-8b-instruct') for the LLM model
• blacknode package with Graph, Node, and cook functionality
• Python script defining node types with inputs/outputs and connecting them via edges

Outputs

• A fully constructed graph with typed nodes and defined connections
• Executed result (e.g., processed text, summary, or other output) from the final node
• A reusable pattern that can be adapted to different models, hardware, or task types

Failure Modes

• Missing or invalid API key (NIM_API_KEY, OPENAI_API_KEY) causing require_nim_api_key() to fail
• Type mismatch in node connections (e.g., expecting 'value' but receiving 'text') breaking the data flow
• Model not available or unreachable (NIM_MODEL not found) causing the LLMAgent node to fail
• Graph execution error due to incorrect edge configuration or circular dependencies
• Resource exhaustion (e.g., GPU memory) when processing large inputs in the pipeline

Source

Extracted from: https://github.com/temiroff/Blacknode.git Confidence: 0.95