solid-ssr-hydration-debugger

solid-ssr-hydration-debugger is a skill for Claude Code, Codex from lvcoi/solidJSkills. It costs 46 tokens per session (589 once invoked), scanned A, original, MIT.

A debugging guide for SolidJS applications that render pages on a server and then make them interactive in the browser. It finds cases where the server's HTML differs from what the browser expects.

In plain words
What is it for?
Use it to investigate mismatched server and browser output, async timing issues, conditional rendering changes, and unsafe browser API access. It also provides fix guidance and a checklist for verifying both sides match.
Why use it?
It helps explain hydration errors and browser-only code that accidentally runs on the server. It turns hard-to-repeat rendering problems into a fixed reproduction and a clear cause.

Skill for Claude CodeCodex

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 skills/lvcoi/solidjskills/solid-ssr-hydration-debugger
Any agent
npx skills add lvcoi/solidJSkills --skill solid-ssr-hydration-debugger
Clone the repo
git clone --depth 1 https://github.com/lvcoi/solidJSkills

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.

agentmods badge for solid-ssr-hydration-debugger

README.md
[![agentmods](https://agentmods.dev/badge/skills/lvcoi/solidjskills/solid-ssr-hydration-debugger.svg)](https://agentmods.dev/skills/lvcoi/solidjskills/solid-ssr-hydration-debugger)
Your own site
<a href="https://agentmods.dev/skills/lvcoi/solidjskills/solid-ssr-hydration-debugger"><img src="https://agentmods.dev/badge/skills/lvcoi/solidjskills/solid-ssr-hydration-debugger.svg" alt="Measured on agentmods" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 589 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 $0.00046 $0.00589
Opus 5 $0.00023 $0.00295
Sonnet 5 $0.00009 $0.00118
Haiku 4.5 $0.00005 $0.00059

Measured 4d ago against content hash 98d1563dd586, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

solid-ssr-hydration-debugger 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 4d 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/solid-ssr-hydration-debugger/SKILL.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

solid-ssr-hydration-debugger

Trigger

Use when SSR output and client hydration diverge, or browser-only assumptions leak into server render paths.

Required Inputs

  • Reproduction steps and environment mode.
  • Affected route/component boundaries.
  • Error logs and observed mismatch behavior.

Workflow

  1. Build deterministic reproduction path with explicit route/component inputs.
  2. Isolate mismatch class: non-deterministic render, browser-only access, async timing, or conditional render drift.
  3. Recommend fix strategy using SSR-safe primitives and hydration boundaries.
  4. Provide verification checklist for server/client parity.

Failure Modes

  • Non-reproducible issue report: request exact steps and route context.
  • Fix without root-cause classification: mark invalid output.
  • Browser API in server path unresolved: fail until guarded.

Output Contract

Return DomainGuidanceOutput with root-cause decisions, remediation handoff, and citations referencing normalized doc_id values.

Validation

  • node tools/scripts/validate-skills.mjs --skill solid-ssr-hydration-debugger
  • node tools/scripts/validate-solid-corpus.mjs

Key Corpus References

Use these doc_id values with the read_corpus_doc MCP tool:

  • solid-core.reference.rendering.hydrate — client hydration attachment
  • solid-core.reference.rendering.is-server — SSR guard constant
  • solid-core.reference.rendering.render-to-stream — streaming SSR with Suspense
  • solid-core.reference.rendering.hydration-script — hydration bootstrapper
  • solid-router.solid-router.rendering-modes.ssr — router SSR rendering mode

References

  • ../../references/solidjs/performance-ssr.md
  • ../../references/solidjs-normalized/docs/reference/rendering/hydrate.md
  • ../../references/solidjs-normalized/docs/reference/rendering/is-server.md
  • ../../references/solidjs-normalized/docs/reference/components/no-hydration.md
  • ../../references/solidjs-normalized/docs/solid-router/rendering-modes/ssr.md

Read the full file on GitHub · 66 lines

Files

What ships with it

1 file 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. 4d ago First seen · 66 lines · 46 tokens per session scan A 98d1563dd586

Subscribe to this mod's changes

solid-ssr-hydration-debugger is a skill published in the GitHub repository lvcoi/solidJSkills (10 stars, last pushed 6mo ago), licensed MIT. It adds 46 tokens to every session and 589 once invoked, about $0.0002 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.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

brainstorming

You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.

obra/superpowers · 37 tokens

auto-perf-optimize

Run agent-driven VS Code performance or memory investigations. Use when asked to launch Code OSS, automate a VS Code scenario, run the Chat memory smoke runner, capture renderer heap snapshots, take workflow screenshots, compare run summaries, or drive a repeatable scenario before heap-snapshot analysis.

microsoft/vscode · 62 tokens

chat-perf

Run chat perf benchmarks and memory leak checks against the local dev build or any published VS Code version. Use when investigating chat rendering regressions, validating perf-sensitive changes to chat UI, or checking for memory leaks in the chat response pipeline.

microsoft/vscode · 51 tokens

chat-pet-sprite-creation

Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.

microsoft/vscode · 53 tokens

cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…

microsoft/vscode · 71 tokens