solid

A renderer that turns json-render interface descriptions into SolidJS components. SolidJS is a JavaScript framework for building web interfaces with automatically updating data.

In plain words
What is it for?
Use it to define component catalogues, register components, render interface specifications, and connect state or actions in SolidJS applications.
Why use it?
It supplies the connection between a JSON-based interface specification and the actual SolidJS components shown in the browser.

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/vercel-labs/json-render/solid
Any agent
npx skills add vercel-labs/json-render --skill solid
Clone the repo
git clone --depth 1 https://github.com/vercel-labs/json-render

Made for: Claude Code, Codex.

Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,255 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 $0.00038 $0.01255
Opus 5 $0.00019 $0.00628
Sonnet 5 $0.00008 $0.00251
Haiku 4.5 $0.00004 $0.00126

Measured yesterday against content hash 90a03fd56ad4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

solid 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 yesterday.

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/SKILL.md · 205 lines

How it starts

The opening of the file, as written. The whole thing — 205 lines — stays where its author put it; the contents beside it link to each section on GitHub.

@json-render/solid

@json-render/solid renders json-render specs into Solid component trees with fine-grained reactivity.

Quick Start

import { Renderer, JSONUIProvider } from "@json-render/solid";
import type { Spec } from "@json-render/solid";
import { registry } from "./registry";

export function App(props: { spec: Spec | null }) {
  return (
    <JSONUIProvider registry={registry} initialState={{}}>
      <Renderer spec={props.spec} registry={registry} />
    </JSONUIProvider>
  );
}

Create a Catalog

import { defineCatalog } from "@json-render/core";
import { schema } from "@json-render/solid/schema";
import { z } from "zod";

export const catalog = defineCatalog(schema, {
  components: {
    Button: {
      props: z.object({
        label: z.string(),
        variant: z.enum(["primary", "secondary"]).nullable(),
      }),
      description: "Clickable button",
    },
    Card: {
      props: z.object({ title: z.string() }),
      description: "Card container",
    },
  },
  actions: {
    submit: { description: "Submit data" },
  },
});

Define Components

Components receive ComponentRenderProps from the renderer:

interface ComponentRenderProps<P = Record<string, unknown>> {
  element: UIElement<string, P>;
  children?: JSX.Element;
  emit: (event: string) => void;
  on: (event: string) => EventHandle;
  bindings?: Record<string, string>;
  loading?: boolean;
}

Example:

import type { BaseComponentProps } from "@json-render/solid";

export function Button(props: BaseComponentProps<{ label: string }>) {
  return (
    <button onClick={() => props.emit("press")}>{props.props.label}</button>
  );
}

Create a Registry

import { defineRegistry } from "@json-render/solid";
import { catalog } from "./catalog";
import { Card } from "./Card";
import { Button } from "./Button";

const { registry, handlers, executeAction } = defineRegistry(catalog, {
  components: {
    Card,
    Button,
  },
  actions: {
    submit: async (params, setState, state) => {
      // custom action logic
    },
  },
});

Read the full file on GitHub · 205 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. yesterday First seen · 205 lines · 38 tokens per session scan A 90a03fd56ad4

Subscribe to this mod's changes

solid is a skill published in the GitHub repository vercel-labs/json-render (16,056 stars, last pushed 3d ago), licensed Apache-2.0. It adds 38 tokens to every session and 1,255 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 2026-08-30.

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