agentmods.dev

chain-c

chain-c is a skill for Claude Code, Codex from lorem-dev/skillkeeper-test-repo. It costs 16 tokens per session (235 once invoked), scanned A, original, MIT.

A coding-agent skill that is the final item in a two-step dependency chain. It declares no dependencies of its own.

In plain words
What is it for?
It is used to test dependency traversal, shared dependencies, installation records, and handling of skills with no declared dependencies.
Why use it?
It lets dependency installation stop cleanly and prevents the same shared dependency from being installed twice.

Skill for Claude CodeCodex

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

not rated 2repo 2mo ago A scan 16 tokens original MIT

Good fit It is used to test dependency traversal, shared dependencies, installation records, and handling of skills with no declared dependencies.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lorem-dev/skillkeeper-test-repo/chain-c
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-c
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-c

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/lorem-dev/skillkeeper-test-repo/chain-c"><img src="https://agentmods.dev/badge/skills/lorem-dev/skillkeeper-test-repo/chain-c.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 235 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 $0.00016 $0.00235
Opus 5.5 $0.00006 $0.00094
Sonnet 5.5 $0.00003 $0.00047
Haiku 4.5 $0.00002 $0.00023

Measured 2mo ago against content hash a504a1db749f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

chain-c 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-c/SKILL.md · 25 lines

What it actually says

chain-c

The end of the chain, and the most-referenced skill in this group: requires/chain-b, requires/flat-legacy, requires/both-forms, and requires/duplicate all point at it.

What this fixture covers:

  • A closure member with no requires of its own, which is where the traversal has to stop. A skill that declares nothing is not the same as a skill that declares an empty list, and neither may loop.
  • A skill reached only as a dependency, never named by the user. It is installed with the as a dependency wording but is otherwise an ordinary install: same ledger entry, same files, same .skid.yml.
  • A shared dependency. Installing two of its dependents for one agent must install this skill once and report Skill already installed the second time, rather than writing a duplicate ledger entry.
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 · 25 lines · 16 tokens per session scan A a504a1db749f

Subscribe to this mod's changes

chain-c is a skill published in the GitHub repository lorem-dev/skillkeeper-test-repo (2 stars, last pushed 2mo ago), licensed MIT. It adds 16 tokens to every session and 235 once invoked, about $0.0001 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-c compared with skills from other repositories

chain-c next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
chain-clorem-dev/skillkeeper-test-repoSkill22mo agoMITA16Claude Code, Codex
pcbwayaklofas/kicad-happySkill1.6ktodayMITA119Claude Code
asc-subscription-localizationrorkai/app-store-connect-cli-skillsSkill1.1ktodayMITA60Claude Code
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