preset-mcp

preset-mcp is a skill for Claude Code from preset-io/agent-skills. It costs 38 tokens per session (495 once invoked), scanned A, original, Apache-2.0.

A set of instructions for routing Superset MCP requests, where Superset is a data-visualization platform, to the correct tools and checking their supported boundaries.

In plain words
What is it for?
Use it when working with Superset MCP tools, including tool discovery, schemas, resources, prompts, permissions, and MCP errors.
Why use it?
It helps prevent MCP requests from being sent through unrelated direct APIs or unsupported workflows.

Skill for Claude Code

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

Part of the preset-mcp-skills plugin — 9 skills shipped together

Good fit Use it when working with Superset MCP tools, including tool discovery, schemas, resources, prompts, permissions, and MCP errors.

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

Made for: Claude Code.

Or install preset-mcp-skills, the plugin that ships this one along with the rest of its 9 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.

agentmods badge for preset-mcp

README.md
[![agentmods](https://agentmods.dev/badge/skills/preset-io/agent-skills/preset-mcp/github.svg)](https://agentmods.dev/skills/preset-io/agent-skills/preset-mcp)
Your own site
<a href="https://agentmods.dev/skills/preset-io/agent-skills/preset-mcp"><img src="https://agentmods.dev/badge/skills/preset-io/agent-skills/preset-mcp/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 preset-mcp

Your own site · 80×15
<a href="https://agentmods.dev/skills/preset-io/agent-skills/preset-mcp"><img src="https://agentmods.dev/badge/skills/preset-io/agent-skills/preset-mcp.svg" alt="Reviewed on agentmods" width="80" 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 495 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00495
Opus 5 $0.00019 $0.00247
Sonnet 5 $0.00008 $0.00099
Haiku 4.5 $0.00004 $0.00049

Measured 12d ago against content hash b3d4241e2d0c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

preset-mcp scanned grade A 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 12d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Do not use direct Preset Management API, Superset REST API, Snowflake Cortex API, curl, Python requests, exports, or database calls from this package.
plugins/preset-mcp-skills/skills/preset-mcp/SKILL.md · 38 lines

How it starts

The opening of the file, as written. The whole thing — 38 lines — stays where its author put it; the contents beside it link to each section on GitHub.

preset-mcp

Use for Superset MCP intent, MCP tool routing, and MCP/API surface-boundary decisions.

Always

  • Stay on MCP tools for MCP intent.
  • Treat superset/superset/mcp_service as the only source of truth for MCP tool names, schemas, tags, annotations, prompts, resources, and RBAC metadata.
  • Call tools directly with the obvious parameters; fetch a tool's schema only after a validation error. These skills are workflow guidance, not schema definitions.
  • Do not use direct Preset Management API, Superset REST API, Snowflake Cortex API, curl, Python requests, exports, or database calls from this package.
  • If MCP cannot satisfy the request, stop and explain the missing MCP capability. Do not switch surfaces.

Decision Rules

  • MCP intent includes MCP tools, MCP clients, Superset MCP, Preset MCP, MCP resources, MCP prompts, tool discovery, and MCP tool errors.
  • Direct API intent includes API credentials, REST endpoints, OpenAPI, curl/Python requests, Management API, workspace API, and Snowflake Cortex APIs.
  • If the user starts with MCP intent and mentions direct API only as a fallback, keep MCP intent. Say: "No API fallback. Direct API is a different surface and requires separate explicit approval. Stop before API calls."
  • When the session is connected through MCP tools and the user has not named a surface, default to MCP and proceed; ask only when the user explicitly mixes both surfaces in one request.
  • Use a domain skill after routing: discovery, data, visualization, dashboard, sqllab, datasets, or troubleshooting.

Workflow Order

  1. Identify whether the user requested MCP or direct API.
  2. For MCP, choose the narrowest MCP domain skill.
  3. Call the tool with the obvious parameters; consult its schema only after a validation error.
  4. If MCP lacks a requested capability, explain the missing MCP capability.
  5. Ask before changing surfaces and stop before API calls.

Retrieve

Read the full file on GitHub · 38 lines

Files

What ships with it

2 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.

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. 12d ago First seen · 38 lines · 38 tokens per session scan A b3d4241e2d0c

Subscribe to this mod's changes

preset-mcp is a skill published in the GitHub repository preset-io/agent-skills (11 stars, last pushed yesterday), licensed Apache-2.0. It adds 38 tokens to every session and 495 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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