One or more tool calls supplied through a single OpenHands confirmation callback and resolved together by Heartwood.
Agent
Software that uses a model and tools iteratively to pursue a task rather than returning only one text response.
Application programming interface (API)
A structured way for software components to communicate.
Audit export
A scrubbed JSON Lines representation of the tamper-evident session audit chain.
Blacksmith
A hosted GitHub Actions runner service Heartwood uses for architecture-matched, compute-intensive validation jobs.
Carina
Stanford's research-computing platform using project storage and Slurm-managed compute.
Container
A packaged Linux filesystem and process environment run by software such as Docker.
Context window
The token budget available to a model for instructions, conversation history, project content, tool results, and output.
Credential binding
A non-secret identifier that tells Heartwood where an authorized process or platform supplies a provider credential.
CUDA
NVIDIA's software platform and application binary interface for GPU computing.
GGUF
A single-file model format commonly used with llama.cpp and quantized CPU inference.
Graphics processing unit (GPU)
Specialized compute hardware used to accelerate model inference.
Hugging Face
A model repository service used by Heartwood to inspect public metadata and download supported model artifacts.
Heartwood-managed model
A model whose files and inference runtime Heartwood manages on the compute environment where Heartwood is running, such as a workstation container, Terra runtime, or Carina allocation.
Large language model (LLM)
The model used by the agent to interpret requests, reason, produce text, and propose tools.
OpenHands
The upstream agent SDK and coding-tool platform used by Heartwood for conversations and tool execution.
OpenAI-compatible service
A model endpoint implementing the relevant OpenAI API request and response shapes; compatibility does not imply operation by OpenAI.
Protected health information (PHI)
Individually identifiable health information protected under applicable policy or law.
Project
The process current directory and its descendants that Heartwood treats as the agent workspace.
Project state
Private non-secret configuration, sessions, models, Skills, logs, caches, runtime files, and audit artifacts under .heartwood/.
Quantization
A lower-precision model representation, such as AWQ, GPTQ, or FP8, used to reduce memory and storage requirements.
Research Skill
A versioned instruction package with declared tools, metadata, and workflow guidance available to the OpenHands agent.
Slurm
A scheduler that allocates compute resources for jobs on platforms such as Stanford Carina.
Tensor parallelism
A runtime layout that divides one model across a fixed number of GPUs.
Terra
A cloud platform for biomedical research workspaces, data, workflows, and interactive Jupyter compute.
vLLM
A GPU-oriented inference server used by supported Heartwood NVIDIA deployments.