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.
git clone --depth 1 https://github.com/infraspecdev/tesseractWrote 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/commands/infraspecdev/tesseract/init-devcontainer)<a href="https://agentmods.dev/commands/infraspecdev/tesseract/init-devcontainer"><img src="https://agentmods.dev/badge/commands/infraspecdev/tesseract/init-devcontainer/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/commands/infraspecdev/tesseract/init-devcontainer"><img src="https://agentmods.dev/badge/commands/infraspecdev/tesseract/init-devcontainer.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 | $0.00023 | $0.00375 |
| Opus 5.5 | $0.00009 | $0.00150 |
| Sonnet 5.5 | $0.00005 | $0.00075 |
| Haiku 4.5 | $0.00002 | $0.00038 |
Grade A, and why
init-devcontainer 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.
What it actually says
Init Devcontainer
Generate a Shield-managed devcontainer for this repo so /implement and other agent-driven commands run in a sandboxed environment.
Usage
/shield init-devcontainer
Behavior
Invoke the shield:devcontainer-init skill (see shield/skills/devcontainer/SKILL.md). The skill:
- Detects the project's stack via
shield/scripts/detect_stack.py. - Confirms the detected stacks with the user (add / correct / drop).
- Composes
.devcontainer/devcontainer.jsonfromshield/skills/devcontainer/feature-map.jsonusingshield/scripts/compose_devcontainer.py. - Copies
shield-firewall.sh,Dockerfile, and a stack-filledpostCreate.shfromshield/skills/devcontainer/templates/. - Updates
.shield.jsonwith adevcontainerblock (stacks_detected,required: "ask",firewall_extra_allowlist: []). - Prints next-step instructions: VS Code "Reopen in Container", or CLI
devcontainer up --workspace-folder .followed byclaude /logininside.
Idempotent: re-running diffs against existing .devcontainer/ and asks before overwriting any file.
See also
- Design spec:
docs/superpowers/specs/2026-05-18-devcontainer-implement-design.md - Threat model + security caveats:
shield/README.md§ Devcontainer
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 · 34 lines · 23 tokens per session scan A bffae6fa8b1b
init-devcontainer is a command published in the GitHub repository infraspecdev/tesseract (5 stars, last pushed 3mo ago), licensed MIT. It adds 23 tokens to every session and 375 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 2026-09-03.
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