probe-interop

probe-interop is a skill for Claude Code, Codex from agent-ecosystem/agent-skill-implementation. It costs 36 tokens per session (187 once invoked), scanned A, original, CC-BY-4.0.

A test skill for checking whether coding-agent skills work through the shared .agents/skills folder used by different agent clients.

In plain words
What is it for?
Use it when testing cross-client skill discovery and compatibility.
Why use it?
It helps reveal whether a skill installed for one client can also be discovered and used by another.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it when testing cross-client skill discovery and compatibility.

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

Made for: Claude Code, Codex.

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 probe-interop

README.md
[![agentmods](https://agentmods.dev/badge/skills/agent-ecosystem/agent-skill-implementation/probe-interop/github.svg)](https://agentmods.dev/skills/agent-ecosystem/agent-skill-implementation/probe-interop)
Your own site
<a href="https://agentmods.dev/skills/agent-ecosystem/agent-skill-implementation/probe-interop"><img src="https://agentmods.dev/badge/skills/agent-ecosystem/agent-skill-implementation/probe-interop/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 probe-interop

Your own site · 80×15
<a href="https://agentmods.dev/skills/agent-ecosystem/agent-skill-implementation/probe-interop"><img src="https://agentmods.dev/badge/skills/agent-ecosystem/agent-skill-implementation/probe-interop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 187 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 unknown 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 $0.00036 $0.00187
Opus 5.5 $0.00014 $0.00075
Sonnet 5.5 $0.00007 $0.00037
Haiku 4.5 $0.00004 $0.00019

Measured 1mo ago against content hash b0db01c0105a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

probe-interop 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 1mo 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.

benchmark-skills/overlay-agents-convention/.agents/skills/probe-interop/SKILL.md · 26 lines

The source is not reproduced here

Licensed CC-BY-4.0

The repository is licensed CC-BY-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 1mo ago First seen · 26 lines · 36 tokens per session scan A b0db01c0105a

Subscribe to this mod's changes

probe-interop is a skill published in the GitHub repository agent-ecosystem/agent-skill-implementation (6 stars, last pushed 22d ago), licensed CC-BY-4.0. It adds 36 tokens to every session and 187 once invoked, about $0.0001 per session on Opus 5.5. 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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