It helps avoid piecing together the connection between routing, server code, page rendering, live updates, and browser-server handoffs. It also documents how to test the resulting app with Playwright, a browser testing tool.

actorkit-tanstack-start — Skill for Claude Code and Codex by jonmumm

actorkit-tanstack-start

actorkit-tanstack-start is a skill for Claude Code, Codex from jonmumm/skills. It costs 88 tokens per session (3,234 once invoked), scanned A, original, no licence file.

A development guide for connecting actor-kit to TanStack Start and Router, tools for building server-rendered web apps. It covers real-time shared state on Cloudflare Workers, including browser-server connections and testing.

In plain words

What is it for?: Use it when building a TanStack Start app that uses actor-kit for state that stays active on the server and updates in real time. It helps set up route data loading, server functions, middleware, page setup, WebSockets, and end-to-end tests.
Why use it?: It helps avoid piecing together the connection between routing, server code, page rendering, live updates, and browser-server handoffs. It also documents how to test the resulting app with Playwright, a browser testing tool.

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it when building a TanStack Start app that uses actor-kit for state that stays active on the server and updates in real time. It helps set up route data loading, server functions, middleware, page setup, WebSockets, and end-to-end tests.

Compare 6 skills from other repositories ↓

Install with agentmods

npx agentmods add skills/jonmumm/skills/actorkit-tanstack-start

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 jonmumm/skills --skill actorkit-tanstack-start

Clone the repo

git clone --depth 1 https://github.com/jonmumm/skills

Made for: Claude Code, 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/jonmumm/skills/actorkit-tanstack-start/github.svg)](https://agentmods.dev/skills/jonmumm/skills/actorkit-tanstack-start)

Your own site

<a href="https://agentmods.dev/skills/jonmumm/skills/actorkit-tanstack-start"><img src="https://agentmods.dev/badge/skills/jonmumm/skills/actorkit-tanstack-start/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/jonmumm/skills/actorkit-tanstack-start"><img src="https://agentmods.dev/badge/skills/jonmumm/skills/actorkit-tanstack-start.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 88 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,234 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 unknown 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	$0.00088	$0.03234
Opus 5.5	$0.00035	$0.01294
Sonnet 5.5	$0.00018	$0.00647
Haiku 4.5	$0.00009	$0.00323

Measured 2mo ago against content hash 22b56e5cf441, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

actorkit-tanstack-start 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.

actorkit-tanstack-start/SKILL.md · 451 lines

The source is not reproduced here

No licence file

Read it on GitHub

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 · 451 lines · 88 tokens per session scan A 22b56e5cf441

Subscribe to this mod's changes

actorkit-tanstack-start is a skill published in the GitHub repository jonmumm/skills (3 stars, last pushed 12d ago), with no licence file. It adds 88 tokens to every session and 3,234 once invoked, about $0.0004 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.

Backend and APIs Frontend

actorkit-tanstack-start next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
actorkit-tanstack-startjonmumm/skills	Skill	3	12d ago	none	A	88	Claude Code, Codex
mem0-oss-to-platformmem0ai/mem0	Skill	69k	yesterday	Apache-2.0	A	217	Claude Code, Codex
azure-mgmt-botservice-dotnetmicrosoft/skills	Skill	3.2k	yesterday	MIT	A	78	Claude Code
fastapi-router-pymicrosoft/skills	Skill	3.2k	yesterday	MIT	A	46	Claude Code
dev-runtimelangwatch/langwatch	Skill	5.0k	today	Apache-2.0	A	172	Claude Code
api-designericrisco/rsc-harness	Skill	529	3d ago	MIT	A	105	Claude Code, Codex
migrate-segw-to-raparc-mcp/arc-1	Skill	253	yesterday	MIT	A	106	Claude Code