check-mcp

check-mcp is a skill for Claude Code from getpapi/papi. It costs 58 tokens per session (930 once invoked), scanned B, original, MIT.

A troubleshooting guide for PAPI, a remotely hosted MCP server that provides tools to an AI agent. It checks whether the tools are available, the server is registered, the user is signed in, and a project is connected.

In plain words
What is it for?
Checking MCP tool availability, verifying PAPI setup in supported clients, and diagnosing sign-in or project-connection problems.
Why use it?
It helps identify why PAPI tools are missing or failing without assuming the problem is on the user’s computer. The guide stops at the first failed connection check.

Skill for Claude Code

Written for Claude Code: Claude Code plugin machinery. Also seen: mentions Claude Code; mentions Codex.

Part of the papi plugin — 14 skills, 1 MCP server shipped together

Good fit Checking MCP tool availability, verifying PAPI setup in supported clients, and diagnosing sign-in or project-connection problems.

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

Made for: Claude Code.

Or install papi, the plugin that ships this one along with the rest of its 14 skills, 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 check-mcp

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/getpapi/papi/check-mcp"><img src="https://agentmods.dev/badge/skills/getpapi/papi/check-mcp.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 930 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 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 $0.00058 $0.00930
Opus 5.5 $0.00023 $0.00372
Sonnet 5.5 $0.00012 $0.00186
Haiku 4.5 $0.00006 $0.00093

Measured 2mo ago against content hash 1a2df038f3e2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

check-mcp 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 2mo 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.

Reads MCP configurationmediumAgent snooping

mcp.json carries server URLs and auth tokens; reading it lets a mod discover and abuse other integrations.

clients only read MCP config at startup.
skills/check-mcp/SKILL.md · 78 lines

How it starts

The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Is PAPI connected?

PAPI runs as a hosted MCP server at https://mcp.getpapi.ai/mcp. Nothing runs on the user's machine, so a failure is one of three things: the server is not registered, the user is not signed in, or the account has no project bound.

Work through the steps in order and stop at the first one that fails. The checks are the same in every client; only the commands differ, so use the ones for the tool you are running in.

Step 1: Are the tools there?

Look at the available tools list for PAPI tools such as orient, board_view and plan.

Tool names vary by how PAPI was installed. Installed as a plugin in Claude Code they are namespaced mcp__plugin_papi_papi__orient; added directly they are mcp__papi__orient; other clients use their own prefixes. All of them mean the same server.

If PAPI tools are present, skip to Step 3. If none are, go to Step 2.

Step 2: Is the server registered?

Check the client's MCP configuration.

  • Claude Code: run claude mcp list. To install, run /plugin marketplace add getpapi/papi then /plugin install papi@papi, or claude mcp add --transport http papi https://mcp.getpapi.ai/mcp.
  • Cursor: open Settings, then MCP, and look for papi. Config lives in ~/.cursor/mcp.json or .cursor/mcp.json in the project.
  • VS Code, Windsurf, Codex and others: check that client's MCP config for a papi entry pointing at https://mcp.getpapi.ai/mcp. Per-client instructions are at https://getpapi.ai/docs/install.

If papi is absent, PAPI is not installed. Add it, then restart the client, since most clients only read MCP config at startup.

If papi is listed but shows an error or "needs authentication", go to Step 3.

Step 3: Is the user signed in?

The hosted server requires a PAPI account. Registering the server does not sign anyone in, and this is the most common cause of "PAPI is installed but nothing works".

Sign-in is interactive and cannot be done on the user's behalf.

  • Claude Code: run /mcp, choose papi, pick Authenticate. A browser tab opens.
  • Other clients: the client prompts for OAuth on first use. If it never does, the client may not support OAuth discovery. Fall back to an API key from the dashboard's Connect panel, set as a bearer token in the MCP config. See https://getpapi.ai/docs/install.

Read the full file on GitHub · 78 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. 2mo ago First seen · 78 lines · 58 tokens per session scan B 1a2df038f3e2

Subscribe to this mod's changes

check-mcp is a skill published in the GitHub repository getpapi/papi (11 stars, last pushed yesterday), licensed MIT. It adds 58 tokens to every session and 930 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads mcp configuration). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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