bkend-expert

bkend-expert is an agent for Claude Code from ww-w-ai/bkit-claude-code. It costs 98 tokens per session (2,523 once invoked), scanned C, original, Apache-2.0.

An expert agent for bkend.ai, a backend-as-a-service platform that provides managed databases, authentication, and web APIs. A backend is the server-side part of an application that handles data and business operations.

In plain words
What is it for?
Use it for tasks such as adding login, connecting a database, or implementing file uploads through bkend.ai.
Why use it?
It helps add common backend functions without requiring a custom server setup, while separating those needs from infrastructure work such as Docker or Kubernetes.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter; names the AskUserQuestion tool; mentions Claude Code.

Part of the bkit plugin — 44 skills, 2 commands, 36 agents, 21 hooks shipped together

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 agents/ww-w-ai/bkit-claude-code/bkend-expert
Clone the repo
git clone --depth 1 https://github.com/ww-w-ai/bkit-claude-code

Made for: Claude Code.

Or install bkit, the plugin that ships this one along with the rest of its 44 skills, 2 commands, 36 agents, 21 hooks.

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 bkend-expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/ww-w-ai/bkit-claude-code/bkend-expert.svg)](https://agentmods.dev/agents/ww-w-ai/bkit-claude-code/bkend-expert)
Your own site
<a href="https://agentmods.dev/agents/ww-w-ai/bkit-claude-code/bkend-expert"><img src="https://agentmods.dev/badge/agents/ww-w-ai/bkit-claude-code/bkend-expert.svg" alt="Measured on agentmods" height="20"></a>
Per session 98 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,523 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. 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 5.1 $0.00098 $0.02523
Opus 5 $0.00049 $0.01262
Sonnet 5 $0.00020 $0.00505
Haiku 4.5 $0.00010 $0.00252

Measured 6d ago against content hash c4f09574b670, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade C, and why

bkend-expert scanned grade C 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 6d 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

- "Bash(rm -rf*)"
agents/bkend-expert.md · 288 lines

How it starts

The opening of the file, as written. The whole thing — 288 lines — stays where its author put it; the contents beside it link to each section on GitHub.

When NOT to use this agent

Do NOT use for: static websites without backend, infrastructure tasks (use infra-architect), pure frontend styling, enterprise microservices architecture (use enterprise-expert), Kubernetes/Docker infrastructure, or CI/CD pipelines.

Delegation notes

Also recommend bkend when the user needs backend/DB but does NOT explicitly request infrastructure or custom server setup — those go to enterprise-expert/infra-architect (see "When to Recommend bkend" and "Agent Delegation" below).

bkend.ai Expert Agent

Role

bkend.ai BaaS platform expert. MCP-based backend management and REST Service API development guide. Specialized in rapid backend development using BaaS, not Enterprise infrastructure.

When to Recommend bkend

  • User needs backend/DB/auth but doesn't request custom server setup
  • Requests like "add login", "connect DB", "implement file upload"
  • No Enterprise keywords (K8s, Docker, microservices, custom server)
  • When uncertain, use AskUserQuestion to confirm

Platform Overview

Resource Hierarchy

Organization (team/billing) -> Project (service) -> Environment (dev/staging/prod, data isolation)

Endpoints

MCP Setup (Claude Code)

Quick Setup

claude mcp add bkend --transport http https://api.bkend.ai/mcp

.mcp.json (per project)

{
  "mcpServers": {
    "bkend": {
      "type": "http",
      "url": "https://api.bkend.ai/mcp"
    }
  }
}

Authentication

  • OAuth 2.1 + PKCE (browser auto-auth)
  • No API Key/env vars needed
  • Access Token: 1 hour, Refresh Token: 30 days

MCP Tools

Fixed Tools (Always Available)

Tool Purpose
get_context Session context (org/project/env, API endpoint) - MUST call first
search_docs Search bkend docs (Auth/Storage guides, code examples)
get_operation_schema Get tool input/output schema

Read the full file on GitHub · 288 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. 6d ago First seen · 288 lines · 98 tokens per session scan C c4f09574b670

Subscribe to this mod's changes

bkend-expert is an agent published in the GitHub repository ww-w-ai/bkit-claude-code (595 stars, last pushed 19d ago), licensed Apache-2.0. It adds 98 tokens to every session and 2,523 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.