agent-interop

agent-interop is a skill for Claude Code, Codex from docxology/codomyrmex. It costs 28 tokens per session (256 once invoked), scanned A, original, MIT.

Shared rules for keeping Codex, Claude Code, and Hermes—the coding-agent tools—aligned through common skills, settings, and handoff records. An MCP contract describes the tools and permissions agents are expected to use.

In plain words
What is it for?
Sharing repository skills and MCP settings, documenting tool permissions, and transferring objectives, changed files, evidence, and remaining risks.
Why use it?
It reduces differences between agent environments and prevents important setup or handoff details from being lost.

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/docxology/codomyrmex/agent-interop
Any agent
npx skills add docxology/codomyrmex --skill agent-interop
Clone the repo
git clone --depth 1 https://github.com/docxology/codomyrmex

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 agent-interop

README.md
[![agentmods](https://agentmods.dev/badge/skills/docxology/codomyrmex/agent-interop.svg)](https://agentmods.dev/skills/docxology/codomyrmex/agent-interop)
Your own site
<a href="https://agentmods.dev/skills/docxology/codomyrmex/agent-interop"><img src="https://agentmods.dev/badge/skills/docxology/codomyrmex/agent-interop.svg" alt="Measured on agentmods" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 256 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 $0.00028 $0.00256
Opus 5 $0.00014 $0.00128
Sonnet 5 $0.00006 $0.00051
Haiku 4.5 $0.00003 $0.00026

Measured 4d ago against content hash 4ddb720bf146, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

agent-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 4d 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.

.agents/skills/agent-interop/SKILL.md · 16 lines

What it actually says

Agent Interoperability

Treat .agents/skills/ as the portable, repository-scoped skill layer. Keep runtime-specific configuration in the runtime’s own file and link back to the portable skill instead of duplicating its logic.

  • Codex discovers project skills from .agents/skills/ and project MCP settings from .codex/config.toml.
  • Claude Code uses .claude/skills/ and project MCP settings from .mcp.json; when a portable skill is not mirrored there, read the corresponding .agents/skills/<name>/SKILL.md explicitly.
  • Hermes can discover the same tree through skills.external_dirs in ~/.hermes/config.yaml; external skill directories are read-only discovery sources.
  • Keep tool names, schemas, approval expectations, and verification steps in the shared documentation. Do not rely on one runtime’s permission model being honored by another.

When transferring work, pass objective, scope, assumptions, files changed, tool calls made, evidence, unresolved risks, and the next verification step. Prefer a small handoff record over copying hidden conversational state.

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. 4d ago First seen · 16 lines · 28 tokens per session scan A 4ddb720bf146

Subscribe to this mod's changes

agent-interop is a skill published in the GitHub repository docxology/codomyrmex (11 stars, last pushed today), licensed MIT. It adds 28 tokens to every session and 256 once invoked, about $0.0001 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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