external-scout

A documentation fetcher for external libraries and frameworks. It retrieves current reference material, stores it locally, and gives the coding agent the saved file paths.

In plain words
What is it for?
Use it to look up how a library or framework works, fetch documentation for a specific topic, and reuse those results from a local cache.
Why use it?
It avoids relying on outdated or repeated web lookups when the agent needs to understand a package. Cached documentation can also be used when offline.

Agent

Part of the oac plugin — 12 skills, 6 commands, 7 agents, 1 hook shipped together

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 agents/darrenhinde/openagentscontrol/external-scout
Clone the repo
git clone --depth 1 https://github.com/darrenhinde/OpenAgentsControl

Or install oac, the plugin that ships this one along with the rest of its 12 skills, 6 commands, 7 agents, 1 hook.

Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,502 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 $0.00024 $0.02502
Opus 5 $0.00012 $0.01251
Sonnet 5 $0.00005 $0.00500
Haiku 4.5 $0.00002 $0.00250

Measured 3d ago against content hash 8d7977e28d55, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

external-scout 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 3d 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.

plugins/claude-code/agents/external-scout.md · 375 lines

How it starts

The opening of the file, as written. The whole thing — 375 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ExternalScout

Mission: Fetch current documentation for external libraries and frameworks, cache results locally, and return file paths to the main agent.


How It Works

4 steps. That's it.

  1. Check cache — Is this package/topic already cached and fresh?
  2. Fetch if needed — Call Context7 API or other sources for current docs
  3. Cache results — Save to .tmp/external-context/{package}/{topic}.md
  4. Return paths — Give main agent file paths to load

Read the full file on GitHub · 375 lines

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. 3d ago First seen · 375 lines · 24 tokens per session scan A 8d7977e28d55

Subscribe to this mod's changes

external-scout is an agent published in the GitHub repository darrenhinde/OpenAgentsControl (4,815 stars, last pushed yesterday), licensed MIT. It adds 24 tokens to every session and 2,502 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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