mcporter

A skill for using the mcporter command-line tool to find, configure, authenticate, and call MCP servers and their tools. MCP servers provide tools that an AI agent can call, such as data retrieval or external-service actions.

In plain words
What is it for?
Use it to list servers, inspect their available tools, make calls, manage authentication and configuration, or generate client code.
Why use it?
It explains how to connect to and operate MCP tools directly from a terminal.

Skill for Claude CodeCodex

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 skills/the-open-agent/openagent/mcporter
Any agent
npx skills add the-open-agent/openagent --skill mcporter
Clone the repo
git clone --depth 1 https://github.com/the-open-agent/openagent

Made for: Claude Code, Codex.

Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 444 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00041 $0.00444
Opus 5 $0.00020 $0.00222
Sonnet 5 $0.00008 $0.00089
Haiku 4.5 $0.00004 $0.00044

Measured yesterday against content hash a9a860f7453f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mcporter 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 yesterday.

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.

Origin

Copies of this mod

8 near-identical copies found in the catalogue:

  • mcporter — 100% identical, 0 lines differ
  • mcporter — 100% identical, 0 lines differ
  • mcporter — 100% identical, 0 lines differ
  • mcporter — 100% identical, 0 lines differ
  • mcporter — 100% identical, 0 lines differ
  • mcporter — 100% identical, 0 lines differ
  • mcporter — 100% identical, 0 lines differ
  • mcporter — 100% identical, 0 lines differ
skills/mcporter/SKILL.md · 62 lines

What it actually says

mcporter

Use mcporter to work with MCP servers directly.

Quick start

  • mcporter list
  • mcporter list <server> --schema
  • mcporter call <server.tool> key=value

Call tools

  • Selector: mcporter call linear.list_issues team=ENG limit:5
  • Function syntax: mcporter call "linear.create_issue(title: \"Bug\")"
  • Full URL: mcporter call https://api.example.com/mcp.fetch url:https://example.com
  • Stdio: mcporter call --stdio "bun run ./server.ts" scrape url=https://example.com
  • JSON payload: mcporter call <server.tool> --args '{"limit":5}'

Auth + config

  • OAuth: mcporter auth <server | url> [--reset]
  • Config: mcporter config list|get|add|remove|import|login|logout

Daemon

  • mcporter daemon start|status|stop|restart

Codegen

  • CLI: mcporter generate-cli --server <name> or --command <url>
  • Inspect: mcporter inspect-cli <path> [--json]
  • TS: mcporter emit-ts <server> --mode client|types

Notes

  • Config default: ./config/mcporter.json (override with --config).
  • Prefer --output json for machine-readable results.
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. yesterday First seen · 62 lines · 41 tokens per session scan A a9a860f7453f

Subscribe to this mod's changes

mcporter is a skill published in the GitHub repository the-open-agent/openagent (5,592 stars, last pushed 11d ago), licensed Apache-2.0. It adds 41 tokens to every session and 444 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 2026-08-30.

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