What is convex-reactive-backend?

A guide for building Convex backends with TypeScript functions, data schemas, live subscriptions, authentication, file storage, and scheduled tasks. Convex is a backend service that can push database changes to connected clients.

It helps create Convex schemas, queries, mutations, actions, indexes, and client code using subscriptions.

It gives Convex-specific structure for features that need live updates instead of a traditional SQL or ORM backend.

convex-reactive-backend — Skill for Claude Code by findscripter

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 findscripter/everything-skills --skill convex-reactive-backend

Clone the repo

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

Made for: Claude Code.

Or install 02-engineering, the plugin that ships this one along with the rest of its 125 skills.

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/findscripter/everything-skills/convex-reactive-backend/github.svg)](https://agentmods.dev/skills/findscripter/everything-skills/convex-reactive-backend)

Your own site

<a href="https://agentmods.dev/skills/findscripter/everything-skills/convex-reactive-backend"><img src="https://agentmods.dev/badge/skills/findscripter/everything-skills/convex-reactive-backend/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/findscripter/everything-skills/convex-reactive-backend"><img src="https://agentmods.dev/badge/skills/findscripter/everything-skills/convex-reactive-backend.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 111 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,602 The whole file, excluding the scripts and references it only reads on demand.

Security scan B 1 finding. 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	$0.00111	$0.02602
Opus 5.5	$0.00044	$0.01041
Sonnet 5.5	$0.00022	$0.00520
Haiku 4.5	$0.00011	$0.00260

Measured today against content hash 8bc1bc580b27, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

convex-reactive-backend 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 today.

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 res = await fetch("https://api.sendgrid.com/v3/mail/send", { method: "POST",

02-engineering/convex-reactive-backend/SKILL.md · 187 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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.

today First seen · 187 lines · 111 tokens per session scan B 8bc1bc580b27

Subscribe to this mod's changes

convex-reactive-backend is a skill published in the GitHub repository findscripter/everything-skills (11 stars, last pushed today), with no licence file. It adds 111 tokens to every session and 2,602 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it B with 1 finding (sends data to an external url). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-12.

Backend and APIs agent-skills ai-agents baas convex next.js schema 公众号

convex-reactive-backend next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
convex-reactive-backendfindscripter/everything-skills	Skill	11	today	none	B	111	Claude Code
varlockdmno-dev/varlock	Skill	5.0k	today	MIT	A	109	Claude Code, Codex
butterbasebutterbase-ai/butterbase	Skill	3.0k	5d ago	Apache-2.0	A	34	Claude Code, Codex
workflow-designmrpulor-gh/nuphus	Skill	103	yesterday	Apache-2.0	A	0	Claude Code, Codex
pipefy-introspectionpipefy/ai-toolkit	Skill	53	today	Apache-2.0	A	55	Claude Code
firebasej4flmao/agent-skills	Skill	41	3d ago	MIT	A	91	Claude Code, Codex
supabasej4flmao/agent-skills	Skill	41	3d ago	MIT	A	100	Claude Code, Codex