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.
npx agentmods add skills/abilityai/abilities/customnpx skills add Abilityai/abilities --skill customgit clone --depth 1 https://github.com/Abilityai/abilitiesWhat 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 | $0.00036 | $0.13688 |
| Opus 5 | $0.00018 | $0.06844 |
| Sonnet 5 | $0.00007 | $0.02738 |
| Haiku 4.5 | $0.00004 | $0.01369 |
Grade D, and why
create-agent scanned grade D with 3 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 2d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
# Container-only config: the Trinity base image bakes ~/.claude/settings.json with Reads MCP configurationmediumAgent snooping
mcp.json carries server URLs and auth tokens; reading it lets a mod discover and abuse other integrations.
- "1.8: Platform-truth refresh (Trinity dev 88a4e2f7) — report payload cap corrected 256 KB → 5 MiB (object only), display_hint gains `json` and now drives the customer-facing Workspace Reports tab, and list_reports/get_ Enumerates other installed skillsmediumAgent snooping
Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.
find .claude/skills -name SKILL.md 2>/dev/null How it starts
The opening of the file, as written. The whole thing — 1,302 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Create Agent
ℹ️ First, set expectations: before anything else, print one short line with this skill's version and its most recent change — the top entry of
metadata.changelogabove — e.g.create-agent vX.Y — recent: <summary>. Then proceed.
Scaffold a complete Claude Code agent from scratch. The agent will be Trinity-compatible and ready for development with playbook-based skill creation.
STEP 1: Gather Agent Requirements
If the user provided a topic as an argument, use it as context. Otherwise, ask.
Use AskUserQuestion to gather the following (can be a single open-ended question if user already provided detail, or multiple focused questions):
1a. Agent Purpose
Question: "What should this agent do? Describe its purpose, who it serves, and what problems it solves."
Header: "Agent Purpose"
Get enough detail to write a meaningful CLAUDE.md. Push for specifics — not "a coding agent" but "an agent that reviews Python PRs for a data engineering team and checks for SQL injection, missing tests, and schema migration issues."
1b. Agent Name
Question: "What should the agent be called?"
Header: "Agent Name"
- Suggest a name based on the purpose (lowercase-with-hyphens, short, memorable)
- Let the user override
- This becomes the directory name and the agent identity
1c. Destination
Question: "Where should I create the agent?"
Header: "Location"
Options:
~/[agent-name]— Home directory (recommended)./[agent-name]— Current directory- Custom path — Let me specify
Expand ~ to actual home directory:
echo "$HOME"
1d. Initial Skills
Question: "What should this agent be able to do from day one? List 2-4 key capabilities."
Header: "Starting Skills"
Examples based on the purpose — if it's a content agent, suggest: "generate blog posts, review drafts, manage editorial calendar." If it's an ops agent: "check service health, deploy updates, investigate incidents."
These will become the agent's first skills.
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.
- 2d ago First seen · 1,302 lines · 36 tokens per session scan D 8b83c3a0d095
create-agent is a skill published in the GitHub repository Abilityai/abilities (11 stars, last pushed 14d ago), licensed MIT. It adds 36 tokens to every session and 13,688 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it D with 3 findings (reads agent configuration directories, reads mcp configuration, enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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