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 commands/thrashr888/agentkernel/templatesgit clone --depth 1 https://github.com/thrashr888/agentkernelWhat 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 | $0.00000 | $0.01327 |
| Opus 5 | $0.00000 | $0.00664 |
| Sonnet 5 | $0.00000 | $0.00265 |
| Haiku 4.5 | $0.00000 | $0.00133 |
Grade A, and why
templates 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 — 156 lines — stays where its author put it; the contents beside it link to each section on GitHub.
agentkernel template
Manage sandbox templates. Templates are pre-configured agentkernel.toml configs that can be used with sandbox create --template or run --template.
Subcommands
| Command | Description |
|---|---|
template list |
List available templates |
template save --from <SANDBOX> <NAME> |
Save a sandbox's config as a template |
template add <SPECIFIER> |
Fetch and cache a GitHub template |
template remove <NAME> |
Remove a custom template |
Built-in Templates
agentkernel ships with 26 built-in templates:
Language Runtimes
| Template | Image | Use Case |
|---|---|---|
python |
python:3.12-alpine |
Python development |
python-ml |
python:3.12 |
Python ML/data science |
node |
node:22-alpine |
Node.js development |
node-fullstack |
node:22 |
Full-stack Node.js |
typescript |
node:22-alpine |
TypeScript projects |
rust |
rust:1.85-alpine |
Rust development |
rust-ci |
rust:1.85-alpine |
Rust CI (restrictive) |
go |
golang:1.23-alpine |
Go development |
ruby |
ruby:3.3-alpine |
Ruby development |
java |
eclipse-temurin:21-alpine |
Java development |
dotnet |
mcr.microsoft.com/dotnet/sdk:8.0 |
.NET development |
bash |
alpine:3.24 |
Shell scripting |
c |
gcc:14-bookworm |
C/C++ development |
secure |
alpine:3.24 |
Restrictive (no network) |
AI Agent Sandboxes
| Template | Image | Use Case |
|---|---|---|
amp-sandbox |
node:24-bookworm-slim |
Amp agent |
claude-sandbox |
node:24-alpine3.24 |
Claude Code agent |
codex-sandbox |
node:24-alpine3.24 |
Codex agent |
copilot-sandbox |
node:24-bookworm-slim |
GitHub Copilot CLI agent |
gemini-sandbox |
node:24-alpine3.24 |
Gemini CLI agent |
opencode-sandbox |
node:24-alpine3.24 |
OpenCode agent |
pi-sandbox |
node:24-alpine3.24 |
Pi coding agent |
symphony-sandbox |
elixir:1.19-otp-28-slim |
Symphony orchestration agent |
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 · 156 lines · 0 tokens per session scan A 50125984fcb6
templates is a command published in the GitHub repository thrashr888/agentkernel (58 stars, last pushed 3d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,327 tokens. 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 commands, from other repositories
diagnose
Run sivtr doctor to check the environment, then investigate any failing checks.
test-changed
Run the full quality gate on only the files changed since branching from main.
test_mcp
Test all rust-docs-testing tools found in @rust-docs-mcp/src/service.rs.
update_mcp_tools_list
Read the rust-docs-mcp/src/service.rs module and ensure that the README.md and the rust-docs-mcp/install.sh files have up to date lists of the tools available in the MCP.
review
You are an expert code reviewer. Your job is to review code changes and provide actionable feedback.
speckit.git.feature
Create a feature branch with sequential or timestamp numbering.