Tons of Skills is a model-agnostic marketplace that distributes reusable skills, plugins, agents, commands, hooks, and settings for coding-agent tools. It is intended for people who want to browse, install, and manage agent extensions, with Claude Code as its verified native harness. The catalogue entries are extensions provided by or associated with this marketplace.
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 skills add jeremylongshore/tons-of-skills-marketplace --skill agency-osgit clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplaceWrote 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.
[](https://agentmods.dev/skills/jeremylongshore/tons-of-skills-marketplace/agency-os)<a href="https://agentmods.dev/skills/jeremylongshore/tons-of-skills-marketplace/agency-os"><img src="https://agentmods.dev/badge/skills/jeremylongshore/tons-of-skills-marketplace/agency-os/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.
<a href="https://agentmods.dev/skills/jeremylongshore/tons-of-skills-marketplace/agency-os"><img src="https://agentmods.dev/badge/skills/jeremylongshore/tons-of-skills-marketplace/agency-os.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 59 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00142 | $0.01869 |
| Opus 5.5 | $0.00057 | $0.00748 |
| Sonnet 5.5 | $0.00028 | $0.00374 |
| Haiku 4.5 | $0.00014 | $0.00187 |
Grade A, and why
agency-os 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 169 lines — stays where its author put it; the contents beside it link to each section on GitHub.
agency-os
Notion-as-source-of-truth dispatch board. One Tasks database, one Hub page, one
page per Corpus, one page each for General Guidance and Resources. The skill
mutates Notion via the Notion MCP (mcp__*__notion-* tools); only
references/notion-pointers.json is committed to git.
Skill name decision: the skill is named agency-os (matching the repo). All
commands are /agency-os <cmd>. This is the single plugin entry point; there
is no agency-os/notion sub-namespace. If you embed this plugin alongside
others, prefix commands with agency-os to avoid collisions.
Overview
agency-os turns a single Notion database into a multi-status dispatch board for AI work. The model is intentionally narrow:
- One Tasks database is the source of truth for status, priority, model selection, and ownership. No parallel kanban tools.
- One Hub page holds the General Guidance, Resources, and Corpus pointers that every task consults.
- Tasks flow through five statuses: Suggestion → Discussion → To-Do → In Progress → Done. The dedup gate at each transition prevents accidental re-execution.
runfans approved To-Do rows out to parallel agents. Each task carries its own model selection (Haiku for cheap fan-out, Sonnet for default, Opus for hard reasoning) and respects declared dependencies.
The skill is stateless on disk — the only committed artifact is
references/notion-pointers.json (database/page IDs). All runtime state lives
in Notion.
For the full architecture (status flow, sync protocol, workspace structure,
pointer/cache format), see references/architecture.md.
Prerequisites
- Notion MCP server installed:
npx -y @notionhq/notion-mcp-server(declare in.mcp.json) - Notion integration token (
NOTION_TOKEN) with read+write access to your workspace. Add.envto.gitignore— never commit the token. - A Notion Tasks database with the columns the skill expects (see
references/architecture.md§ "Workspace structure" for the schema). The/agency-os initcommand can scaffold this for you. - Python 3 for the optional
scripts/query-tasks.pyhelper.
What ships with it
11 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/architecture.md 16 KB
- references/commands.md 27 KB
- references/config-template.json 523 B
- references/corpus-template.md 764 B
- references/general-guidance.md 4.3 KB
- references/natural-language.md 3.9 KB
- references/notion-pointers.json 2.9 KB
- references/positioning.md 1.6 KB
- references/task-page-template.md 1.5 KB
- scripts/query-tasks.py 9.0 KB runs code
- state/.gitkeep 0 B
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.
- 1mo ago First seen · 169 lines · 142 tokens per session scan A b6b0736b67a4
agency-os is a skill published in the GitHub repository jeremylongshore/tons-of-skills-marketplace (2,876 stars, last pushed today), licensed MIT. It adds 142 tokens to every session and 1,869 once invoked, about $0.0006 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 2026-08-30.
Other skills, from other repositories
notion-tool
A Notion integration tool. It performs page and database search, retrieval, creation, and updates via the API. Use when: Use when: you need to edit Notion pages, add database rows, or search and retrieve workspace content.
notion
Notion API integration - create pages, query databases, manage blocks, and sync content with Notion workspace.
accounting-software-selection
Scores shortlisted accounting packages against 57 evidence-backed fields, emitted as CSV, SQL, JSON Schema or Notion on request. Use for choosing accounting software.
360-feedback-system
360 feedback register: reviewer, subject, review cycle, visibility, due date and score, as CSV, SQL, JSON Schema or Notion on request. Use for 360 reviews or peer feedback cycles.
admin-access-register
Admin account register: system, main and backup admin, seats, plan, 2FA, shared logins and access-review dates, as CSV, SQL, JSON Schema or Notion on request. Use for access reviews.
access-matrix
Access matrix of role-by-module permissions, with per-role scope, confidentiality level and SME tier, as CSV, SQL, JSON Schema or Notion on request. Use for access reviews.