viash-component-authoring

viash-component-authoring is a cursor rule for Cursor from Rebell-Leader/SpatialAI_MCP. It costs 55 tokens per session (971 once invoked), scanned A, original, Apache-2.0.

A set of rules for creating or changing Viash components, which package a script and its configuration into command-line tools, containers, and Nextflow modules. It targets methods in OpenProblems spatial-data pipelines.

In plain words
What is it for?
Use it to scaffold or repair a Viash configuration and its Python, R, or Bash implementation for a preprocessing stage.
Why use it?
It helps new components match the pipeline’s required inputs, outputs, metadata, and resource settings.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/. Also seen: mentions AGENTS.md.

Good fit Use it to scaffold or repair a Viash configuration and its Python, R, or Bash implementation for a preprocessing stage.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/rebell-leader/spatialai_mcp/viash-component-authoring
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.

Clone the repo
git clone --depth 1 https://github.com/Rebell-Leader/SpatialAI_MCP

Made for: Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for viash-component-authoring

README.md
[![agentmods](https://agentmods.dev/badge/rules/rebell-leader/spatialai_mcp/viash-component-authoring.svg)](https://agentmods.dev/rules/rebell-leader/spatialai_mcp/viash-component-authoring)
Your own site
<a href="https://agentmods.dev/rules/rebell-leader/spatialai_mcp/viash-component-authoring"><img src="https://agentmods.dev/badge/rules/rebell-leader/spatialai_mcp/viash-component-authoring.svg" alt="Measured on agentmods" height="20"></a>
Per session 55 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 971 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00055 $0.00971
Opus 5 $0.00028 $0.00485
Sonnet 5 $0.00011 $0.00194
Haiku 4.5 $0.00006 $0.00097

Measured 8d ago against content hash a2fc355d1910, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

viash-component-authoring 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 8d ago.

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.

.cursor/rules/viash-component-authoring.mdc · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Viash component authoring

A Viash component = a config.vsh.yaml (metadata: arguments, resources, engines)

  • a script (Python/R/Bash). Viash compiles it into a CLI, a Docker image, and a Nextflow module.

Steps

  1. Identify the stage and its interface. OpenProblems components conform to a comp_* API merged in via __merge__: /src/api/comp_<stage>.yaml. Find the right interface for the pipeline stage you're implementing (see context/ist-preprocessing-pipeline.md) and match its inputs/outputs exactly.

  2. Write config.vsh.yaml. Use the modern flat config (no functionality: wrapper) with engines: / runners: (not the legacy platforms:). Follow OpenProblems conventions: merge the stage API, build on the shared base image with a setup partial, include the standard metadata block, and label the nextflow runner with resource directives. This mirrors a real task_ist_preprocessing component:

    __merge__: /src/api/comp_<stage>.yaml
    
    name: my_method
    label: "My Method"
    summary: "One-line biological purpose."
    description: "Longer description with method context."
    links:
      documentation: "https://github.com/openproblems-bio/task_ist_preprocessing"
      repository: "https://github.com/openproblems-bio/task_ist_preprocessing"
    references:
      doi: "10.xxxx/xxxxx"        # the method's paper
    
    arguments:
      - name: "--some_param"
        type: double
        default: 1.0
        description: "Biologically meaningful parameter."
    # Note: --input/--output are usually inherited from the merged comp_<stage> API.
    
    resources:
      - type: python_script
        path: script.py
    
    engines:
      - type: docker
        image: openproblems/base_python:1        # shared base, not raw python:*
        __merge__:
          - /src/base/setup_spatialdata_partial.yaml   # extra deps via setup partial
      - type: native
    
    runners:
      - type: executable
      - type: nextflow
        directives:
          label: [ midtime, lowcpu, lowmem ]     # resource labels
    

Read the full file on GitHub · 100 lines

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. 8d ago First seen · 100 lines · 55 tokens per session scan A a2fc355d1910

Subscribe to this mod's changes

viash-component-authoring is a cursor rule published in the GitHub repository Rebell-Leader/SpatialAI_MCP (4 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 55 tokens to every session and 971 once invoked, about $0.0003 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 2026-08-31.