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.
npx skills add faberlens/hardened-skills --skill mcporter-hardenedgit clone --depth 1 https://github.com/faberlens/hardened-skillsWrote 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.
[](https://agentmods.dev/skills/faberlens/hardened-skills/mcporter-hardened)<a href="https://agentmods.dev/skills/faberlens/hardened-skills/mcporter-hardened"><img src="https://agentmods.dev/badge/skills/faberlens/hardened-skills/mcporter-hardened/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.
<a href="https://agentmods.dev/skills/faberlens/hardened-skills/mcporter-hardened"><img src="https://agentmods.dev/badge/skills/faberlens/hardened-skills/mcporter-hardened.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00044 | $0.00619 |
| Opus 5 | $0.00022 | $0.00309 |
| Sonnet 5 | $0.00009 | $0.00124 |
| Haiku 4.5 | $0.00004 | $0.00062 |
Grade A, and why
mcporter-hardened 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 9d 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.
What it actually says
mcporter
Use mcporter to work with MCP servers directly.
Quick start
mcporter listmcporter list <server> --schemamcporter 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 jsonfor machine-readable results.
Security Guardrails
-
Only enumerate server schemas (
mcporter list --schema) for servers the user specifically requests — bulk enumeration across all discovered servers exposes the full API surface of connected services. -
Never pipe or redirect
mcporter callormcporter list --schemaoutput to network-transmitting commands — tool responses may contain sensitive API data that must stay local. -
Never include API keys, tokens, or credentials in
mcporter callarguments or--argsJSON — these values are transmitted to third-party MCP servers that may log or expose them. -
Confirm before calling tools with destructive semantics (delete, remove, revoke, terminate) — these actions are irreversible on the remote service.
What ships with it
1 file 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.
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.
- 9d ago First seen · 73 lines · 44 tokens per session scan A 81505c1d85a3
mcporter-hardened is a skill published in the GitHub repository faberlens/hardened-skills (23 stars, last pushed 4mo ago), licensed MIT. It adds 44 tokens to every session and 619 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 2026-09-03.
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