external-adapter-graph

external-adapter-graph is a skill for Claude Code, Codex from runxhq/runx. It costs 22 tokens per session (156 once invoked), scanned A, original, Apache-2.0.

A one-step example showing how a graph can run a governed external subprocess through an adapter. The adapter receives approved permissions, exchanges messages with the subprocess, and records its result.

In plain words
What is it for?
Running the included harness to test external-adapter routing, permission delivery, input and output exchange, and result recording.
Why use it?
It helps developers understand and test the path between a graph step and a trusted external program, including the limits of that setup. It is not an operating-system security boundary.

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/runxhq/runx/external-adapter-graph
Any agent
npx skills add runxhq/runx --skill external-adapter-graph
Clone the repo
git clone --depth 1 https://github.com/runxhq/runx

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 external-adapter-graph

README.md
[![agentmods](https://agentmods.dev/badge/skills/runxhq/runx/external-adapter-graph.svg)](https://agentmods.dev/skills/runxhq/runx/external-adapter-graph)
Your own site
<a href="https://agentmods.dev/skills/runxhq/runx/external-adapter-graph"><img src="https://agentmods.dev/badge/skills/runxhq/runx/external-adapter-graph.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 156 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 5.1 $0.00022 $0.00156
Opus 5 $0.00011 $0.00078
Sonnet 5 $0.00004 $0.00031
Haiku 4.5 $0.00002 $0.00016

Measured 6d ago against content hash 8f7fc23c96ec, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

external-adapter-graph 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 6d 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.

examples/external-adapter-graph/SKILL.md · 16 lines

What it actually says

External-adapter graph

A single-step graph that drives an external-adapter sub-skill. The runtime routes the graph step's external-adapter source through the source-adapter registry to the external-adapter executor, which resolves the manifest, spawns the declared trusted host subprocess, delivers its resolved grant, exchanges the invocation and response frames, and seals the reported result. The process is not an OS confinement boundary.

External-adapter is a graph-step front, not a top-level runner. Run this skill's inline harness with runx harness examples/external-adapter-graph.

Files

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.

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. 6d ago First seen · 16 lines · 22 tokens per session scan A 8f7fc23c96ec

Subscribe to this mod's changes

external-adapter-graph is a skill published in the GitHub repository runxhq/runx (85 stars, last pushed 2d ago), licensed Apache-2.0. It adds 22 tokens to every session and 156 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.