ferix: Skill for Claude Code

.claude/skills/Convex Component Authoring/SKILL.md

Convex Component Authoring is a skill for Claude Code from charlietlamb/ferix. It costs 28 tokens per session (2,635 once invoked), scanned A, a copy of convex-component-authoring, MIT.

A guide to building self-contained Convex components: reusable packages that include their own database tables, functions, types, validators, and optional frontend hooks.

In plain words
What is it for?
Use it to create, organize, publish, and integrate independent Convex packages.
Why use it?
It helps isolate reusable server features and manage their exports and dependencies when sharing them between projects.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is charlietlamb/ferix's own configuration. It tells Claude Code how to work on ferix itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ferix configures →

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is import { query } from "../_generated/server";.

Reuse

Borrowing it

Nothing to install: this file belongs to charlietlamb/ferix. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/charlietlamb/ferix/main/.claude/skills/Convex Component Authoring/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/charlietlamb/ferix

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 Convex Component Authoring

README.md
[![agentmods](https://agentmods.dev/badge/skills/charlietlamb/ferix/convex-component-authoring/github.svg)](https://agentmods.dev/skills/charlietlamb/ferix/convex-component-authoring)
Your own site
<a href="https://agentmods.dev/skills/charlietlamb/ferix/convex-component-authoring"><img src="https://agentmods.dev/badge/skills/charlietlamb/ferix/convex-component-authoring/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 Convex Component Authoring

Your own site · 80×15
<a href="https://agentmods.dev/skills/charlietlamb/ferix/convex-component-authoring"><img src="https://agentmods.dev/badge/skills/charlietlamb/ferix/convex-component-authoring.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,635 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 98% copy Near-identical to another mod 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 $0.00028 $0.02635
Opus 5 $0.00014 $0.01318
Sonnet 5 $0.00006 $0.00527
Haiku 4.5 $0.00003 $0.00264

Measured 9d ago against content hash f00f2f55b8d3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

Convex Component Authoring 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.

Origin

This is a copy

98% identical to convex-component-authoring — 3 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/Convex Component Authoring/SKILL.md · 457 lines

How it starts

The opening of the file, as written. The whole thing — 457 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Convex Component Authoring

Create self-contained, reusable Convex components with proper isolation, exports, and dependency management for sharing across projects.

Documentation Sources

Before implementing, do not assume; fetch the latest documentation:

Instructions

What Are Convex Components?

Convex components are self-contained packages that include:

  • Database tables (isolated from the main app)
  • Functions (queries, mutations, actions)
  • TypeScript types and validators
  • Optional frontend hooks

Component Structure

my-convex-component/
├── package.json
├── tsconfig.json
├── README.md
├── src/
│   ├── index.ts           # Main exports
│   ├── component.ts       # Component definition
│   ├── schema.ts          # Component schema
│   └── functions/
│       ├── queries.ts
│       ├── mutations.ts
│       └── actions.ts
└── convex.config.ts       # Component configuration

Creating a Component

1. Component Configuration
// convex.config.ts
import { defineComponent } from "convex/server";

export default defineComponent("myComponent");
2. Component Schema
// src/schema.ts
import { defineSchema, defineTable } from "convex/server";
import { v } from "convex/values";

export default defineSchema({
  // Tables are isolated to this component
  items: defineTable({
    name: v.string(),
    data: v.any(),
    createdAt: v.number(),
  }).index("by_name", ["name"]),
  
  config: defineTable({
    key: v.string(),
    value: v.any(),
  }).index("by_key", ["key"]),
});
3. Component Definition
// src/component.ts
import { defineComponent, ComponentDefinition } from "convex/server";
import schema from "./schema";
import * as queries from "./functions/queries";
import * as mutations from "./functions/mutations";

const component = defineComponent("myComponent", {
  schema,
  functions: {
    ...queries,
    ...mutations,
  },
});

export default component;

Read the full file on GitHub · 457 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. 9d ago First seen · 457 lines · 28 tokens per session scan A f00f2f55b8d3

Subscribe to this mod's changes

Convex Component Authoring is a skill published in the GitHub repository charlietlamb/ferix (10 stars, last pushed 6mo ago), licensed MIT. It adds 28 tokens to every session and 2,635 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to convex-component-authoring, differing in 3 lines, and is treated as a copy.

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