solid-syntax-signals

solid-syntax-signals is a skill for Claude Code from OpenAEC-Foundation/OpenAEC-Workspace-Composer. It costs 115 tokens per session (2,940 once invoked), scanned A, original, MIT.

A guide to SolidJS reactive primitives, which are the built-in pieces used to store data, calculate values, run effects, load resources, and manage component lifecycles.

In plain words
What is it for?
Use it when creating signals, derived values, effects, asynchronous resources, batched updates, explicit dependencies, mount and cleanup handlers, or observable data.
Why use it?
It helps prevent React-style patterns that break SolidJS's fine-grained update tracking.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions Claude Code.

Good fit Use it when creating signals, derived values, effects, asynchronous resources, batched updates, explicit dependencies, mount and cleanup handlers, or observable data.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/openaec-foundation/openaec-workspace-composer/solid-syntax-signals
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.

Any agent
npx skills add OpenAEC-Foundation/OpenAEC-Workspace-Composer --skill solid-syntax-signals
Clone the repo
git clone --depth 1 https://github.com/OpenAEC-Foundation/OpenAEC-Workspace-Composer

Made for: Claude Code.

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 solid-syntax-signals

README.md
[![agentmods](https://agentmods.dev/badge/skills/openaec-foundation/openaec-workspace-composer/solid-syntax-signals/github.svg)](https://agentmods.dev/skills/openaec-foundation/openaec-workspace-composer/solid-syntax-signals)
Your own site
<a href="https://agentmods.dev/skills/openaec-foundation/openaec-workspace-composer/solid-syntax-signals"><img src="https://agentmods.dev/badge/skills/openaec-foundation/openaec-workspace-composer/solid-syntax-signals/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for solid-syntax-signals

Your own site · 80×15
<a href="https://agentmods.dev/skills/openaec-foundation/openaec-workspace-composer/solid-syntax-signals"><img src="https://agentmods.dev/badge/skills/openaec-foundation/openaec-workspace-composer/solid-syntax-signals.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 115 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,940 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 $0.00115 $0.02940
Opus 5 $0.00057 $0.01470
Sonnet 5 $0.00023 $0.00588
Haiku 4.5 $0.00012 $0.00294

Measured 9d ago against content hash fe722c4d72b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

solid-syntax-signals 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 9d 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.

.claude/skills/solidjs/solid-syntax/solid-syntax-signals/SKILL.md · 351 lines

How it starts

The opening of the file, as written. The whole thing — 351 lines — stays where its author put it; the contents beside it link to each section on GitHub.

solid-syntax-signals

Quick Reference

All Reactive Primitives

Primitive Import Purpose Returns
createSignal<T> solid-js Reactive state atom [Accessor<T>, Setter<T>]
createEffect solid-js Side effect on dependency change void
createMemo<T> solid-js Cached derived value (IS a reactive source) Accessor<T>
createResource<T> solid-js Async data with loading/error states [Resource<T>, { mutate, refetch }]
createRenderEffect solid-js Synchronous effect during render phase void
createComputed solid-js Before-render state synchronization void
batch solid-js Defer propagation until callback completes T (return value)
untrack solid-js Prevent dependency tracking T (return value)
on solid-js Explicit dependency specification for effects EffectFunction
onMount solid-js Run once after DOM mount (non-tracking) void
onCleanup solid-js Dispose resources on scope cleanup (LIFO) void
observable solid-js Convert signal to RxJS Observable Observable<T>
from solid-js Bridge external reactive source to signal Accessor<T>

Critical Warnings

ALWAYS call signal getters as functions: count(), NEVER count. Forgetting the parentheses reads the getter function itself, not the value, and breaks reactivity tracking.

NEVER use dependency arrays. SolidJS tracks dependencies automatically. Writing createEffect(() => { ... }, [dep]) does NOT work like React's useEffect.

NEVER destructure props or store objects. Destructuring reads values once and kills reactive tracking. ALWAYS access properties on the original object.

ALWAYS remember: the component function runs ONCE. Only reactive expressions (effects, memos, JSX bindings) re-execute. Top-level code is setup code, not render code.

NEVER return cleanup functions from effects. SolidJS uses onCleanup() as a separate call, not a return value like React's useEffect.

Read the full file on GitHub · 351 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 351 lines · 115 tokens per session scan A fe722c4d72b6

Subscribe to this mod's changes

solid-syntax-signals is a skill published in the GitHub repository OpenAEC-Foundation/OpenAEC-Workspace-Composer (5 stars, last pushed 5mo ago), licensed MIT. It adds 115 tokens to every session and 2,940 once invoked, about $0.0006 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.

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