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chain-a

chain-a is a skill for Claude Code, Codex from lorem-dev/skillkeeper-test-repo. It costs 12 tokens per session (334 once invoked), scanned A, original, MIT.

A coding-agent skill at the start of a two-step dependency chain. Installing it should also install chain-b and chain-c, in that order.

In plain words
What is it for?
It is used to test transitive dependency resolution, installation order, namespaced skill identities, and clean lint results.
Why use it?
It verifies that dependency installation follows the full chain, including indirect dependencies, instead of checking only the first level.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 2repo 2mo ago A scan 12 tokens original MIT

Good fit It is used to test transitive dependency resolution, installation order, namespaced skill identities, and clean lint results.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lorem-dev/skillkeeper-test-repo/chain-a
View source ↗ lorem-dev/skillkeeper-test-repo
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 lorem-dev/skillkeeper-test-repo --skill chain-a
Clone the repo
git clone --depth 1 https://github.com/lorem-dev/skillkeeper-test-repo

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 chain-a

README.md
[![agentmods](https://agentmods.dev/badge/skills/lorem-dev/skillkeeper-test-repo/chain-a/github.svg)](https://agentmods.dev/skills/lorem-dev/skillkeeper-test-repo/chain-a)
Your own site
<a href="https://agentmods.dev/skills/lorem-dev/skillkeeper-test-repo/chain-a"><img src="https://agentmods.dev/badge/skills/lorem-dev/skillkeeper-test-repo/chain-a/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 chain-a

Your own site · 80×15
<a href="https://agentmods.dev/skills/lorem-dev/skillkeeper-test-repo/chain-a"><img src="https://agentmods.dev/badge/skills/lorem-dev/skillkeeper-test-repo/chain-a.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 12 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 334 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00012 $0.00334
Opus 5.5 $0.00005 $0.00134
Sonnet 5.5 $0.00002 $0.00067
Haiku 4.5 $0.00001 $0.00033

Measured 2mo ago against content hash f77df7a608fd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

chain-a 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 2mo 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.

requires/chain-a/SKILL.md · 42 lines

What it actually says

chain-a

The head of the only multi-hop chain in this repository. Installing it must pull in requires/chain-b and requires/chain-c.

What this fixture covers:

  • The strict, namespaced skillkeeper.requires field, which is the spelling every new skill should use.
  • Transitivity. One hop would be satisfied by a resolver that only looked at direct references; two hops are not. chain-a -> chain-b -> chain-c is the shortest chain that proves the install order is a closure rather than a single lookup.
  • A reference naming a skill's resolved identity (requires/chain-b), not its directory path. The two happen to coincide here because this repository has no skillkeeper.repo.yaml; a name or group override would move the identity and the reference would have to follow it.

Expected behaviour

skillkeeper skill install requires/chain-a --agent claude installs three skills and prints one line per dependency:

Skill installed: requires/chain-a -> ...
Skill installed as a dependency: requires/chain-b -> ...
Skill installed as a dependency: requires/chain-c -> ...

repo lint reports nothing for any member of the chain. It is the positive control the negative fixtures in this group are read against.

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. 2mo ago First seen · 42 lines · 12 tokens per session scan A f77df7a608fd

Subscribe to this mod's changes

chain-a is a skill published in the GitHub repository lorem-dev/skillkeeper-test-repo (2 stars, last pushed 2mo ago), licensed MIT. It adds 12 tokens to every session and 334 once invoked, about $0.0000 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.

aiai-skillsmcp
Related

chain-a compared with skills from other repositories

chain-a next to 6 skills from other repositories
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chain-alorem-dev/skillkeeper-test-repoSkill22mo agoMITA12Claude Code, Codex
pcbwayaklofas/kicad-happySkill1.6ktodayMITA119Claude Code
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happiness-skillkangarooking/cangjie-skillSkill12k1mo agoMITA136Claude Code, Codex
remotion-best-practicesguanyang/open-agent-hubSkill986todayMITA116Claude Code
influence-psychologywondelai/skillsSkill2.6k5d agoMITA156Claude Code
jobs-to-be-donewondelai/skillsSkill2.6k5d agoMITA137Claude Code