A reliability and performance workflow for protecting the core parts of a software system. It focuses on capacity, speed, failure limits, critical situations, and the ability to turn off a change without deploying again.

Use it to document critical scenarios, benchmarks, failure modes, characterization tests, a working kill switch, risks, and a plan for preventing regressions.

It makes the expected baseline, failure handling, emergency controls, and regression checks explicit before a change is released.

stoneward — Skill for Claude Code and Codex by Hmbown

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 Hmbown/knightsradiant --skill stoneward

Clone the repo

git clone --depth 1 https://github.com/Hmbown/knightsradiant

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/hmbown/knightsradiant/stoneward/github.svg)](https://agentmods.dev/skills/hmbown/knightsradiant/stoneward)

Your own site

<a href="https://agentmods.dev/skills/hmbown/knightsradiant/stoneward"><img src="https://agentmods.dev/badge/skills/hmbown/knightsradiant/stoneward/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/hmbown/knightsradiant/stoneward"><img src="https://agentmods.dev/badge/skills/hmbown/knightsradiant/stoneward.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 410 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 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.

Model	Per session	Once invoked
Fable 5.1	$0.00018	$0.00410
Opus 5	$0.00009	$0.00205
Sonnet 5	$0.00004	$0.00082
Haiku 4.5	$0.00002	$0.00041

Measured 10d ago against content hash 7de895f67a8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

stoneward 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 10d 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.

skills/knights-radiant/stoneward/SKILL.md · 61 lines

What it actually says

Stoneward

Hold the load-bearing core: reliability, capacity, performance, failure budgets.

Invoke when

Follow agents/09-stoneward/AGENTS.md for the canonical decision criteria.

Inputs required

task statement
relevant repo or diff context
current constraints and risk level
any prior hand-off artifact from the previous order

Procedure

Read the canonical order doc at agents/09-stoneward/AGENTS.md.
Use the local order procedures under agents/09-stoneward/skills/.
Keep the work inside this order's stance until its artifact is complete.
Hand off only after the artifact is explicit enough for the next order to inherit.

Output shape

Produce the full load-bearing packet defined in agents/09-stoneward/AGENTS.md.

At minimum, include:

critical scenarios
baseline behavior / benchmark notes
characterization tests added
failure modes covered
kill-switch contract: the operational lever that reverts the change under pressure, its mechanism (feature flag, config, DNS, etc.), and confirmation that it works without a deploy
risk notes and follow-ups
regression guard plan

Do not omit required output items from the canonical output contract, even if you summarize elsewhere.

Hand-off

Normal: Bondsmith
Exception: Truthwatcher

Local doctrine

Order doc: agents/09-stoneward/AGENTS.md
Local skill index: agents/09-stoneward/skills/SKILL.md

Example invocation

"Use stoneward for this task and produce the required artifact before proposing the next order."

Usage rule

Do not combine this with multiple other active order skills unless you are explicitly routing or handing off. One order should own the work at a time.

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.

10d ago First seen · 61 lines · 0 tokens per session scan A 7de895f67a8d

Subscribe to this mod's changes

stoneward is a skill published in the GitHub repository Hmbown/knightsradiant (2 stars, last pushed 4mo ago), licensed MIT. It adds 18 tokens to every session and 410 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 2026-08-31.

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