app

app is a skill for Claude Code from MangroveTechnologies/mangrove-agent. It costs 38 tokens per session (326 once invoked), scanned A, original, MIT.

An integration guide for connecting a coding agent to an app's API, which is the interface used to read data and create or check resources.

In plain words
What is it for?
Use it to query app data, create resources, check status, test connectivity, and choose between MCP tools and REST API calls.
Why use it?
It explains how to use the app's available tools, handle authentication, and deal with paid requests when direct tool access is unavailable.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the mangrove-agent plugin — 1 skill, 1 command, 1 MCP server shipped together

Good fit Use it to query app data, create resources, check status, test connectivity, and choose between MCP tools and REST API calls.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mangrovetechnologies/mangrove-agent/app
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 MangroveTechnologies/mangrove-agent --skill app
Clone the repo
git clone --depth 1 https://github.com/MangroveTechnologies/mangrove-agent

Made for: Claude Code.

Or install mangrove-agent, the plugin that ships this one along with the rest of its 1 skill, 1 command, 1 MCP server.

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 app

README.md
[![agentmods](https://agentmods.dev/badge/skills/mangrovetechnologies/mangrove-agent/app.svg)](https://agentmods.dev/skills/mangrovetechnologies/mangrove-agent/app)
Your own site
<a href="https://agentmods.dev/skills/mangrovetechnologies/mangrove-agent/app"><img src="https://agentmods.dev/badge/skills/mangrovetechnologies/mangrove-agent/app.svg" alt="Measured on agentmods" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 326 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 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 $0.00038 $0.00326
Opus 5 $0.00019 $0.00163
Sonnet 5 $0.00008 $0.00065
Haiku 4.5 $0.00004 $0.00033

Measured 7d ago against content hash e0e09c8a6ed2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

app 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 7d 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.

plugin/skills/app/SKILL.md · 45 lines

What it actually says

App Plugin

This is the consolidated skill for interacting with your app's API. It covers all MCP tools and REST endpoints.

Available Tools

Tool Access Description
echo free Echo a message back (connectivity test)

Usage Pattern

  1. Check if the MCP server is connected (.mcp.json config)
  2. If connected, use MCP tools directly
  3. If not connected, fall back to REST API calls
  4. For auth-gated endpoints, include the API key
  5. For x402-gated endpoints, follow the payment flow

Payment Flow (x402)

For paid tools:

  1. Call the tool WITHOUT a payment parameter
  2. Server returns payment requirements (price, network, pay-to address)
  3. Present the price to the user and ask for confirmation
  4. If confirmed and agent has wallet: sign and submit payment
  5. If no wallet: suggest using an API key or the REST endpoint directly

Error Handling

If a tool call fails:

  • Check the error code and message
  • Present the suggestion field to the user
  • If MCP is unavailable, fall back to REST
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. 7d ago First seen · 45 lines · 38 tokens per session scan A e0e09c8a6ed2

Subscribe to this mod's changes

app is a skill published in the GitHub repository MangroveTechnologies/mangrove-agent (5 stars, last pushed 1mo ago), licensed MIT. It adds 38 tokens to every session and 326 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 2026-08-31.

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