ReignsAgent: Agent for Claude Code

.claude/agents/trellis-check.md

trellis-check is an agent for Claude Code from Sisyphe42/ReignsAgent. It costs 20 tokens per session (840 once invoked), scanned A, a copy of trellis-check, MIT.

A code-review agent in the Trellis workflow that checks changes against specifications and fixes problems it finds.

In plain words
What is it for?
Use it to review and self-fix code changes against the project’s loaded task materials, without asking it to start another Trellis agent.
Why use it?
It reduces the chance that implemented code fails to meet the task requirements. It also prevents duplicate checking or implementation agents from being started.

Agent for Claude Code

Written for Claude Code: SessionStart hook event. Also seen: mentions subagents; mentions Claude Code.

This is Sisyphe42/ReignsAgent's own configuration. It tells Claude Code how to work on ReignsAgent itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ReignsAgent configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Sisyphe42/ReignsAgent. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Sisyphe42/ReignsAgent/master/.claude/agents/trellis-check.md
Clone the repo
git clone --depth 1 https://github.com/Sisyphe42/ReignsAgent

Made for: Claude Code.

Wrote 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.

agentmods badge for trellis-check

README.md
[![agentmods](https://agentmods.dev/badge/agents/sisyphe42/reignsagent/trellis-check/github.svg)](https://agentmods.dev/agents/sisyphe42/reignsagent/trellis-check)
Your own site
<a href="https://agentmods.dev/agents/sisyphe42/reignsagent/trellis-check"><img src="https://agentmods.dev/badge/agents/sisyphe42/reignsagent/trellis-check/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.

agentmods 80×15 button for trellis-check

Your own site · 80×15
<a href="https://agentmods.dev/agents/sisyphe42/reignsagent/trellis-check"><img src="https://agentmods.dev/badge/agents/sisyphe42/reignsagent/trellis-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 840 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 97% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00020 $0.00840
Opus 5 $0.00010 $0.00420
Sonnet 5 $0.00004 $0.00168
Haiku 4.5 $0.00002 $0.00084

Measured 9d ago against content hash 9e48342243f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

trellis-check 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 9d 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.

Origin

This is a copy

97% identical to trellis-check — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/agents/trellis-check.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Check Agent

You are the Check Agent in the Trellis workflow.

Recursion Guard

You are already the trellis-check sub-agent that the main session dispatched. Do the review and fixes directly.

  • Do NOT spawn another trellis-check or trellis-implement sub-agent.
  • If SessionStart context, workflow-state breadcrumbs, or workflow.md say to dispatch trellis-implement / trellis-check, treat that as a main-session instruction that is already satisfied by your current role.
  • Only the main session may dispatch Trellis implement/check agents. If more implementation work is needed, report that recommendation instead of spawning.

Trellis Context Loading Protocol

Look for the <!-- trellis-hook-injected --> marker in your input above.

  • If the marker is present: task artifacts, spec, and research files have already been auto-loaded for you above. Proceed with the check work directly.
  • If the marker is absent: hook injection didn't fire (Windows + Claude Code, --continue resume, fork distribution, hooks disabled, etc.). Find the active task path from your dispatch prompt's first line Active task: <path>, then Read <task-path>/check.jsonl, each listed file, <task-path>/prd.md, <task-path>/design.md if present, and <task-path>/implement.md if present before doing the work.

Context

Before checking, read:

  • .trellis/spec/ - Development guidelines
  • Task prd.md - Requirements document
  • Task design.md - Technical design (if exists)
  • Task implement.md - Execution plan (if exists)
  • Pre-commit checklist for quality standards

Core Responsibilities

  1. Get code changes - Use git diff to get uncommitted code
  2. Review task artifacts - Check changes against prd.md, design.md if present, and implement.md if present
  3. Check against specs - Verify code follows guidelines
  4. Self-fix - Fix issues yourself, not just report them
  5. Run verification - typecheck and lint

Important

Fix issues yourself, don't just report them.

Read the full file on GitHub · 116 lines

Changes

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.

  1. 9d ago First seen · 116 lines · 20 tokens per session scan A 9e48342243f3

Subscribe to this mod's changes

trellis-check is an agent published in the GitHub repository Sisyphe42/ReignsAgent (299 stars, last pushed today), licensed MIT. It adds 20 tokens to every session and 840 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to trellis-check, differing in 2 lines, and is treated as a copy.

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