node-validate

A command that checks a bubbaloop node against its contract. A node is a component that connects bubbaloop to a sensor, actuator, processor, or other service.

In plain words
What is it for?
Use it to validate a node directory or registered node name and get a compact list of passed checks, failures, and next steps.
Why use it?
It finds invalid manifests, directory layouts, and command schemas before the node is added or installed.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/kornia/bubbaloop/node-validate
Clone the repo
git clone --depth 1 https://github.com/kornia/bubbaloop
Per session 18 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 355 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00018 $0.00355
Opus 5 $0.00009 $0.00178
Sonnet 5 $0.00004 $0.00071
Haiku 4.5 $0.00002 $0.00036

Measured yesterday against content hash 51f3aa1dd25b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

node-validate scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

bubbaloop-mcp/commands/node-validate.md · 33 lines

What it actually says

Validate node $ARGUMENTS against the bubbaloop node contract.

If $ARGUMENTS looks like a path (starts with / or . or contains /), run:

bubbaloop node validate $ARGUMENTS

If $ARGUMENTS looks like a registered node name, look up its path first via node_health(node_name="$ARGUMENTS") (the response includes path) and validate that.

Report the result as a compact list:

  • ✓ <check> for passes
  • ✗ <check> — <fix> for failures

Common failures and fixes:

Failure Likely cause Fix
node.yaml not found Wrong directory passed Pass the directory containing node.yaml, not its parent
name not matching ^[a-zA-Z0-9_/-.]+$ Invalid characters in name Rename — use snake_case or kebab-case only
command queryable not declared Missing /command queryable in main loop See node-author guide for the skeleton
manifest schema_version too old Pre-2026 manifest format Bump schema_version field; see migration table in core-contributing.md

End with a one-line → next: recommendation. If the node passes, suggest bubbaloop node add and node_install (or bubbaloop node install for the systemd step).

Keep the response under one screen.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 33 lines · 18 tokens per session scan A 51f3aa1dd25b

Subscribe to this mod's changes

node-validate is a command published in the GitHub repository kornia/bubbaloop (28 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 18 tokens to every session and 355 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.