What is effector-storage?

A set of guidance for saving Effector application data between sessions or sharing it between browser contexts. Effector is a JavaScript library for managing application state, such as user settings or loaded data.

Use it when adding persistence with local or session storage, URL query data, memory, asynchronous storage, or cross-tab synchronization in an Effector app.

It helps developers choose where data should be stored and handle browser, server, validation, and synchronization issues consistently.

effector-storage — Skill for Codex by aiko-atami/effectorjs-skills

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 aiko-atami/effectorjs-skills --skill effector-storage

Clone the repo

git clone --depth 1 https://github.com/aiko-atami/effectorjs-skills

Made for: Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/aiko-atami/effectorjs-skills/effector-storage/github.svg)](https://agentmods.dev/skills/aiko-atami/effectorjs-skills/effector-storage)

Your own site

<a href="https://agentmods.dev/skills/aiko-atami/effectorjs-skills/effector-storage"><img src="https://agentmods.dev/badge/skills/aiko-atami/effectorjs-skills/effector-storage/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/aiko-atami/effectorjs-skills/effector-storage"><img src="https://agentmods.dev/badge/skills/aiko-atami/effectorjs-skills/effector-storage.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 529 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.

Model	Per session	Once invoked
Fable 5.1	$0.00081	$0.00529
Opus 5.5	$0.00032	$0.00212
Sonnet 5.5	$0.00016	$0.00106
Haiku 4.5	$0.00008	$0.00053

Measured 2mo ago against content hash 2524a4e2bff4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

effector-storage 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 2mo 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.

skills/effector-storage/SKILL.md · 50 lines

How it starts

The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Effector Storage Skill

Use this skill to design, implement, and debug effector-storage integrations with predictable runtime behavior.

Workflow

Classify the request:

adapter-choice: pick the right adapter for environment and data behavior.
integration: wire persist/createPersist into existing model flow.
contracts-errors: validate storage payloads and route failures.
sync-debug: investigate cross-tab/query/broadcast synchronization issues.
ssr-fallback: make persistence safe across browser/server runtimes.

Load references progressively:

Start with references/core-patterns.md.
Add references/adapter-matrix.md when adapter selection/configuration is needed.
Add references/tools-and-composition.md for async, either, farcached, or composition recipes.
Add references/contracts-and-errors.md for contracts and error channels.
End with references/pitfalls-and-checklist.md before finalizing.

Build answer contract:

Start with a concrete adapter decision and why.
Provide a minimal working snippet with explicit key strategy.
List behavior caveats (init timing, sync limits, validation behavior).
Add verification steps/tests for the chosen flow.

Defaults

Target effector-storage v7.x behavior.
Prefer explicit key over implicit store names for portability.
Prefer declarative Effector wiring around persist (sample/clock/context units).
Keep payloads plain and serialization stable (deserialize(serialize(x))).

Guardrails

Do not omit both key and store name.
Do not use source === target for non-store units.
Do not assume pickup still performs automatic initial restore (it disables it).
Do not assume contract validation prevents writes; invalid values can be persisted and then reported via fail.
Do not treat broadcast as durable storage; it is sync-only messaging.

Practical Extras Boundary

For adapters from effector-storage-extras, reuse the same adapter contract and decision flow from this skill, but verify exact API/options in that repository before coding.

Read the full file on GitHub · 50 lines

Files

What ships with it

6 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.

2mo ago First seen · 50 lines · 81 tokens per session scan A 2524a4e2bff4

Subscribe to this mod's changes

effector-storage is a skill published in the GitHub repository aiko-atami/effectorjs-skills (2 stars, last pushed 8mo ago), licensed MIT. It adds 81 tokens to every session and 529 once invoked, about $0.0003 per session on Opus 5.5. 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.

Frontend skill

effector-storage next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
effector-storageaiko-atami/effectorjs-skills	Skill	2	8mo ago	MIT	A	81	Codex
patent-maphandsomestWei/patent-disclosure-skill	Skill	13k	2d ago	MIT	A	48	Claude Code
autoreviewopenclaw/clawhub	Skill	9.5k	yesterday	MIT	A	17	Claude Code, Codex
sandbaseiflytek/skillhub	Skill	5.4k	yesterday	Apache-2.0	A	67	Claude Code
convex-insightsopenclaw/clawhub	Skill	9.5k	yesterday	MIT	A	45	Claude Code, Codex
openclaw-design-systemopenclaw/clawhub	Skill	9.5k	yesterday	MIT	A	37	Claude Code, Codex
convex-addopenclaw/clawhub	Skill	9.5k	yesterday	MIT	A	81	Claude Code, Codex