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.
npx skills add J-StaR-Films-Studios/VibeCode-Protocol-Suite --skill convex-functionsgit clone --depth 1 https://github.com/J-StaR-Films-Studios/VibeCode-Protocol-SuiteWrote 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.
[](https://agentmods.dev/skills/j-star-films-studios/vibecode-protocol-suite/convex-functions)<a href="https://agentmods.dev/skills/j-star-films-studios/vibecode-protocol-suite/convex-functions"><img src="https://agentmods.dev/badge/skills/j-star-films-studios/vibecode-protocol-suite/convex-functions/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.
<a href="https://agentmods.dev/skills/j-star-films-studios/vibecode-protocol-suite/convex-functions"><img src="https://agentmods.dev/badge/skills/j-star-films-studios/vibecode-protocol-suite/convex-functions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00028 | $0.02870 |
| Opus 5 | $0.00014 | $0.01435 |
| Sonnet 5 | $0.00006 | $0.00574 |
| Haiku 4.5 | $0.00003 | $0.00287 |
Grade B, and why
convex-functions scanned grade B with 1 finding 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 10d 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.
Sends data to an external URLmediumData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
const response = await fetch("https://api.email.com/send", { method: "POST", This is a copy
100% identical to convex-functions — 0 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.
How it starts
The opening of the file, as written. The whole thing — 459 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Convex Functions
Master Convex functions including queries, mutations, actions, and HTTP endpoints with proper validation, error handling, and runtime considerations.
Code Quality
All examples in this skill comply with @convex-dev/eslint-plugin rules:
- Object syntax with
handlerproperty - Argument validators on all functions
- Explicit table names in database operations
See the Code Quality section in convex-best-practices for linting setup.
Documentation Sources
Before implementing, do not assume; fetch the latest documentation:
- Primary: https://docs.convex.dev/functions
- Query Functions: https://docs.convex.dev/functions/query-functions
- Mutation Functions: https://docs.convex.dev/functions/mutation-functions
- Actions: https://docs.convex.dev/functions/actions
- HTTP Actions: https://docs.convex.dev/functions/http-actions
- For broader context: https://docs.convex.dev/llms.txt
Instructions
Function Types Overview
| Type | Database Access | External APIs | Caching | Use Case |
|---|---|---|---|---|
| Query | Read-only | No | Yes, reactive | Fetching data |
| Mutation | Read/Write | No | No | Modifying data |
| Action | Via runQuery/runMutation | Yes | No | External integrations |
| HTTP Action | Via runQuery/runMutation | Yes | No | Webhooks, APIs |
Queries
Queries are reactive, cached, and read-only:
import { query } from "./_generated/server";
import { v } from "convex/values";
export const getUser = query({
args: { userId: v.id("users") },
returns: v.union(
v.object({
_id: v.id("users"),
_creationTime: v.number(),
name: v.string(),
email: v.string(),
}),
v.null(),
),
handler: async (ctx, args) => {
return await ctx.db.get("users", args.userId);
},
});
// Query with index
export const listUserTasks = query({
args: { userId: v.id("users") },
returns: v.array(
v.object({
_id: v.id("tasks"),
_creationTime: v.number(),
title: v.string(),
completed: v.boolean(),
}),
),
handler: async (ctx, args) => {
return await ctx.db
.query("tasks")
.withIndex("by_user", (q) => q.eq("userId", args.userId))
.order("desc")
.collect();
},
});
What ships with it
3 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.
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.
- 10d ago First seen · 459 lines · 28 tokens per session scan B e7a5debd1491
convex-functions is a skill published in the GitHub repository J-StaR-Films-Studios/VibeCode-Protocol-Suite (24 stars, last pushed 5d ago), licensed ISC. It adds 28 tokens to every session and 2,870 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (sends data to an external url). It is 100% identical to convex-functions, differing in 0 lines, and is treated as a copy.
Other skills, from other repositories
convex-functions
Writing queries, mutations, actions, and HTTP actions with proper argument validation, error handling, internal functions, and runtime considerations.
convex-http-actions
External API integration and webhook handling including HTTP endpoint routing, request/response handling, authentication, CORS configuration, and webhook signature validation.
convex-create-component
Designs and builds Convex components with isolated tables, clear boundaries, and app-facing wrappers. Use this skill when creating a new Convex component, extracting reusable backend logic into a component, building a third-party integration that owns its own tables, packaging Convex functionality for reuse, or when…
convex-quickstart
Initializes a new Convex project from scratch or adds Convex to an existing app. Use this skill when starting a new project with Convex, scaffolding with npm create convex@latest, adding Convex to an existing React, Next.js, Vue, Svelte, or other frontend, wiring up ConvexProvider, configuring environment variables…
convex-migration-helper
Plans and executes safe Convex schema and data migrations using the widen-migrate-narrow workflow and the @convex-dev/migrations component. Use this skill when a deployment fails schema validation, existing documents need backfilling, fields need adding or removing or changing type, tables need splitting or merging…
convex-performance-audit
Audits and optimizes Convex application performance across hot-path reads, write contention, subscription cost, and function limits. Use this skill when a Convex feature is slow or expensive, npx convex insights shows high bytes or documents read, OCC conflict errors or mutation retries appear, subscriptions or UI…