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 massdriver-cloud/claude-plugins --skill massdrivergit clone --depth 1 https://github.com/massdriver-cloud/claude-pluginsWrote 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/massdriver-cloud/claude-plugins/massdriver)<a href="https://agentmods.dev/skills/massdriver-cloud/claude-plugins/massdriver"><img src="https://agentmods.dev/badge/skills/massdriver-cloud/claude-plugins/massdriver/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/massdriver-cloud/claude-plugins/massdriver"><img src="https://agentmods.dev/badge/skills/massdriver-cloud/claude-plugins/massdriver.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00124 | $0.08563 |
| Opus 5.5 | $0.00050 | $0.03425 |
| Sonnet 5.5 | $0.00025 | $0.01713 |
| Haiku 4.5 | $0.00012 | $0.00856 |
Grade A, and why
massdriver 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 19d 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 — 780 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Massdriver Bundle Development
You are helping develop infrastructure bundles for Massdriver. This skill provides patterns, workflows, and reference material for bundle development against the platform.
Tooling hierarchy — MCP first. Every control-plane operation (projects, environments, components, instances, deployments, resources) is a tool on the massdriver MCP server — the server's tool list and schemas are the reference; don't guess arguments, read them. The mass CLI is used ONLY for filesystem-bound work the MCP server can't touch (see CLI Reference at the bottom). The UI is only for first-time credential/secret bootstrapping and visual canvas inspection — hand the user a deep link with get_url. GraphQL is optional, for multi-entity queries only (references/graphql.md).
Mental Model (read first)
Massdriver separates design time from deploy time:
- Project — owns a blueprint: a graph of
componentsconnected bylinks. The blueprint is the architecture. - Component — a slot in the blueprint backed by a bundle (the IaC). Add a component once at the project level — every environment gets it automatically.
- Link — a design-time wire from one component's output field to another component's input field. Becomes a connection at deploy time.
- Environment — a deployment context (e.g.
prod,staging,agentx7k2). Environments materialize the blueprint into instances. - Instance — a deployed component in a specific environment. Slug is
<project>-<env>-<component>(e.g.ecomm-prod-db). - Resource — the runtime output of an instance, conforming to a resource type (the schema contract). Bundles declare the resources they publish under
resources:inmassdriver.yaml.
Components are added exactly once, at the project level (add_component) — never per environment. Every environment automatically gets an instance for every component.
Quick Start
| Workflow | Command | Use When |
|---|---|---|
| Full Development | /massdriver:develop <use-case> |
Creating/updating bundles with full test loop |
| Upgrade Testing | /massdriver:test-upgrade <bundle> |
Validating version upgrades against prod config |
| Quick Generation | /massdriver:gen <use-case> |
Scaffolding a bundle without deploy loop |
| Resource Import | /massdriver:import <resource> |
Adopting existing cloud infra (new bundle, existing bundle, or resource-only) |
What ships with it
8 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.
- 19d ago Changed · +42 lines · +20 tokens per session 476646c2dcf8
- 1mo ago First seen · 738 lines · 104 tokens per session scan A c3505258e29d
massdriver is a skill published in the GitHub repository massdriver-cloud/claude-plugins (2 stars, last pushed 19d ago), licensed Apache-2.0. It adds 124 tokens to every session and 8,563 once invoked, about $0.0005 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.
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