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/objectstack-ai/objectstack/objectstack-platformnpx skills add objectstack-ai/objectstack --skill objectstack-platformgit clone --depth 1 https://github.com/objectstack-ai/objectstackWhat 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 | $0.00148 | $0.12470 |
| Opus 5 | $0.00074 | $0.06235 |
| Sonnet 5 | $0.00030 | $0.02494 |
| Haiku 4.5 | $0.00015 | $0.01247 |
Grade A, and why
objectstack-platform 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 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.
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 — 1,287 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Platform — ObjectStack Bootstrap & Plugin System
Expert instructions for two related concerns:
- Project setup — scaffolding new projects, writing
objectstack.config.ts, picking drivers and adapters, the runtime boot sequence (the original "quickstart" skill). - Plugin development — building plugins, registering services,
wiring kernel hook / event handlers, working with
ObjectKernelvsLiteKernel(the original "plugin" skill).
Both areas share the same defineStack() / kernel surface, which is why
they live in one skill.
When to Use This Skill
- Creating a new ObjectStack project from scratch.
- Scaffolding a new project with the bundled
blanktemplate. - Writing or modifying
objectstack.config.ts(defineStack()config). - Selecting a database driver (Memory, SQL, MongoDB).
- Integrating with a web framework (Hono via
@objectstack/hono/@objectstack/plugin-hono-server). - Understanding the runtime boot sequence and plugin loading order.
- Setting up multi-app composition with
composeStacks(). - Answering "how do I get started?" questions.
The Template
blank is the only template create-objectstack offers, and it is the default:
- Bundled with
create-objectstack— works offline, no network fetch - One example object, in-memory driver, Hono server
- A clean slate to extend with the metadata this skill describes
The five remote content templates (todo, compliance, content,
contracts, procurement) are retired — delisted from the marketplace and
no longer maintained. Do not recommend them; asking for one by name is refused.
Build domain metadata on top of blank instead.
Scaffolding Command
# Interactive — prompts for a name
npx create-objectstack
# Direct — skip prompts (blank is the default, and the only, template)
npx create-objectstack my-app
Project Structure Conventions
Every ObjectStack project follows this directory structure:
What ships with it
7 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.
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 · 1,287 lines · 148 tokens per session scan A e2e5a4329699
objectstack-platform is a skill published in the GitHub repository objectstack-ai/objectstack (45 stars, last pushed 2d ago), licensed Apache-2.0. It adds 148 tokens to every session and 12,470 once invoked, about $0.0007 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 2026-08-30.
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