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thor-cosmos is a Strands agent + justfile that orchestrates the full NVIDIA Cosmos ecosystem and deploys it on Jetson AGX Thor for real-time robot perception.

Wraps Cosmos-Reason2 (VLM), Cosmos-Predict2.5 (world model), Cosmos-Transfer2.5 (ControlNet), and Cosmos-Xenna (data curation) — every pipeline is a just recipe that agents and operators share.

 Operator CLI         Strands Agent
      │                     │
      │  just <recipe>      │  cosmos_*()
      │                     │
      └─────────────────────┴─────────┐
                                      ▼
                              ┌───────────────┐
                              │   justfile    │  ← EVERYTHING lives here
                              │  (42 recipes) │
                              └───────────────┘
                                      │
                      ┌───────────────┼───────────────┐
                      ▼               ▼               ▼
               tensorrt-edgellm-*   torchrun     curl/gst/nats
               (quant/export)      (train/distill) (serve/io)

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Why the justfile pattern?

• Same muscle memory as upstream: every Cosmos repo (cosmos-predict2.5, cosmos-transfer2.5, cosmos-reason2, cosmos-cookbook) already ships a justfile. Ours blends in.
• One source of truth: agents shell out to just <recipe>; operators run just <recipe> directly. Zero duplication.
• Thin Python tools: each @tool is ~30 lines that invokes a recipe and maps output → Strands ToolResult.
• Discoverable: just --list prints every pipeline step.
• Composable: pipeline-edge-deploy chains download → quantize → export-llm → export-visual.

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Installation

brew install just                         # (or: curl -LsSf https://get.casey.rs | bash)
pipx install thor-cosmos
thor-cosmos                               # start the agent

From source:

git clone https://github.com/cagataycali/thor-cosmos
cd thor-cosmos
just install                              # venv + pip install -e .
just run                                  # start agent REPL

On Jetson Thor (rsync from laptop, run via tmux):

# From your laptop:
just deploy-thor cagatay@thor.local ~/thor-cosmos

# On Thor:
ssh cagatay@thor.local
tmux new -s thor 'cd ~/thor-cosmos && just run'

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Tools ↔ Recipes

Tool (agent)	just recipe (CLI)
cosmos_model_download	just download <name> / just download-dataset <name>
cosmos_quantize	just quantize <model_dir> <output_dir> <dtype> <quantization>
cosmos_export_onnx (llm)	just export-llm <model_dir> <output_dir>
cosmos_export_onnx (visual)	just export-visual <model_dir> <output_dir> <dtype> <quant>
cosmos_build_engine (llm)	just build-llm-engine <onnx_dir> <engine_dir> ...
cosmos_build_engine (visual)	just build-visual-engine <onnx_dir> <engine_dir>
cosmos_serve(start|stop|status|logs|restart)	serve-start / serve-stop / serve-status / serve-logs / serve-restart
cosmos_inference	just infer <image> <prompt>
cosmos_reason_hf	HF Transformers direct (no recipe)
rtp_capture_frame	just rtp-capture <port> <out> <w> <h> <timeout>
nats_publish	just nats-publish <subject> <payload_json>
cosmos_predict_generate	just predict-generate <input.json>
cosmos_transfer_generate	just transfer-generate <input.json> <control>
cosmos_post_train(reason2|predict2_5|transfer2_5)	post-train-reason2 / post-train-predict / post-train-transfer
cosmos_distill	just distill <teacher> <student> <method> <family>
cosmos_curate	just curate <input> <output> <stages>
cosmos_evaluate	just evaluate <metric> <pred> <gt>
system_info	just sysinfo
video_probe / video_extract_frames	just video-probe / just video-frames
image_read	— (read + embed JPEG bytes)

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Pipelines (composed recipes)

# Full x86 model prep (download → quantize → export-llm → export-visual)
just prep-edge-model reason2-2b ./models/Cosmos-Reason2-2B-fp8

# Flagship edge deployment (intbot_edge_vlm)
just pipeline-edge-deploy reason2-2b ./models/Cosmos-Reason2-2B-fp8

# GR00T-Dreams synthetic trajectories
just pipeline-gr00t-dreams ./datasets/gr1 configs/gr00t-dreams.yaml

# Real-time perception (RTP → VLM → NATS, runs in tmux)
just perception-loop perception.vlm "describe the scene, count people"

# Smoke test
just smoke

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The flagship recipe — intbot_edge_vlm

Deploy Cosmos-Reason2 to Thor for real-time robot perception.

# On x86 GPU host
just prep-edge-model reason2-2b ./models/R2-fp8
scp -r ./models/R2-fp8/onnx cagatay@thor.local:~/R2-fp8-onnx

# On Thor
just build-engines ~/R2-fp8-onnx ~/R2-fp8-engines
just serve-start ~/R2-fp8-engines/llm ~/R2-fp8-engines/visual
just infer /tmp/test.jpg "count people in the scene"

# Continuous loop
just perception-loop perception.vlm "describe the scene; count people"

Expected throughput on Jetson AGX Thor with Cosmos-Reason2-2B FP8: 3-5 FPS at 800×600 and 128-token output.

→ Full walkthrough in the docs

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Environment

All just recipes honor these env vars (put them in .env — dotenv-load is on):

# Agent model
THOR_COSMOS_PROVIDER=bedrock              # bedrock | openai | ollama
THOR_COSMOS_MODEL_ID=global.anthropic.claude-opus-4-6-v1
AWS_REGION=us-west-2

# TRT-Edge-LLM binaries (Thor)
TRT_ROOT=/opt/tensorrt-edge-llm
COSMOS_SERVER_BIN=${TRT_ROOT}/build/examples/server/trt_edgellm_server
TRT_LLM_BUILD_BIN=${TRT_ROOT}/build/examples/llm/llm_build
TRT_VISUAL_BUILD_BIN=${TRT_ROOT}/build/examples/multimodal/visual_build

# Cosmos upstream repo paths (cloned alongside thor-cosmos by default)
COSMOS_PREDICT_REPO=../cosmos-predict2.5
COSMOS_TRANSFER_REPO=../cosmos-transfer2.5
COSMOS_REASON_REPO=../cosmos-reason2
COSMOS_XENNA_REPO=../cosmos-xenna
COSMOS_RL_REPO=../cosmos-rl
COSMOS_COOKBOOK_REPO=../cosmos-cookbook

# Serve / IO
VLM_HOST=127.0.0.1
VLM_PORT=8080
RTP_BIND=0.0.0.0
RTP_PORT=5600
NATS_URL=nats://127.0.0.1:4222

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ToolResult contract

Every tool returns:

{
    "status": "success" | "error",
    "content": [
        {"text": "..."},                                          # human-readable
        {"json": {...}},                                          # structured payload
        {"image": {"format": "jpeg", "source": {"bytes": b"..."}}},
    ],
}

Image-producing tools (rtp_capture_frame, video_extract_frames, image_read) embed the captured JPEG bytes so the agent can feed them straight into cosmos_inference on the next turn — no disk round-trip.

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Docs

• Installation — prerequisites, env setup, verify
• Quickstart — 2-minute tour
• Thor deployment — rsync, tmux, systemd
• x86 model prep — quantize, export, ship
• Architecture — justfile-as-API pattern
• API reference — all 19 tools
• intbot_edge_vlm — flagship walkthrough

Landing page: cagataycali.github.io/thor-cosmos

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References

• Cosmos Cookbook — upstream recipes
• Cosmos-Reason2
• Cosmos-Predict2.5
• Cosmos-Transfer2.5
• Cosmos-Xenna
• Strands Agents

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