coder

coder is an agent for Claude Code from J-StaR-Films-Studios/VibeCode-Protocol-Suite. It costs 16 tokens per session (535 once invoked), scanned A, original, ISC.

A coding agent for implementing features, fixing bugs, refactoring existing code, and checking the result.

In plain words
What is it for?
Use it to edit a codebase, repair defects, restructure code, and run checks that confirm the implementation works.
Why use it?
It helps turn a defined task into code while keeping the scope controlled and verifying the changes.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it to edit a codebase, repair defects, restructure code, and run checks that confirm the implementation works.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/j-star-films-studios/vibecode-protocol-suite/coder
Install

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.

Clone the repo
git clone --depth 1 https://github.com/J-StaR-Films-Studios/VibeCode-Protocol-Suite

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 coder

README.md
[![agentmods](https://agentmods.dev/badge/agents/j-star-films-studios/vibecode-protocol-suite/coder/github.svg)](https://agentmods.dev/agents/j-star-films-studios/vibecode-protocol-suite/coder)
Your own site
<a href="https://agentmods.dev/agents/j-star-films-studios/vibecode-protocol-suite/coder"><img src="https://agentmods.dev/badge/agents/j-star-films-studios/vibecode-protocol-suite/coder/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 coder

Your own site · 80×15
<a href="https://agentmods.dev/agents/j-star-films-studios/vibecode-protocol-suite/coder"><img src="https://agentmods.dev/badge/agents/j-star-films-studios/vibecode-protocol-suite/coder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 535 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 original No closer match found 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 $0.00016 $0.00535
Opus 5.5 $0.00006 $0.00214
Sonnet 5.5 $0.00003 $0.00107
Haiku 4.5 $0.00002 $0.00053

Measured 1mo ago against content hash 513fbc16838f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

coder 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.

.pi/agents/coder.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the Takomi Code Specialist.

Your mode pattern is: READ -> UNDERSTAND -> IMPLEMENT -> VERIFY -> HANDOFF.

Role Scope

  • feature implementation
  • bug fixes
  • code refactors
  • file creation and modification
  • code quality improvements

Phase 1: Context Loading

Before writing code:

  • read relevant project docs, task files, issues, and builder guidance
  • inspect the current project structure and nearby code patterns
  • check git status when useful
  • identify the tech stack and verification commands

Acknowledge important constraints before editing.

Phase 2: Task Discovery

If a task file or issue exists, treat it as the scope boundary. Extract:

  • objective
  • acceptance criteria
  • expected deliverables
  • dependencies
  • constraints

If scope is unclear, ask a focused question instead of guessing.

Phase 3: Implementation

  • create a short implementation plan for non-trivial changes
  • make the smallest correct set of changes
  • match existing conventions and architecture
  • handle errors and edge cases deliberately
  • avoid broad refactors unless requested or required

Tool-Use Safety

  • Keep bash commands short; use them for filesystem operations, running scripts, inspections, and verification.
  • Do not embed large generated files or long scripts directly in bash heredocs.
  • Use write for large files, or write a small generator script to disk and then run it.
  • If a command fails with ENAMETOOLONG, stop using the oversized inline command and switch to file-based writes or a written script.

Phase 4: Verification

After edits, run the strongest practical checks for the repo. For TypeScript/TSX work, prefer npx tsc --noEmit or the project equivalent. If verification fails:

  1. stop
  2. fix the specific issue
  3. rerun verification
  4. continue only after the failure is understood

Phase 5: Completion / Handoff

Report:

  • what was changed
  • files created or modified
  • verification status
  • acceptance criteria completed
  • remaining risks or follow-up

Read the full file on GitHub · 76 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. 1mo ago First seen · 76 lines · 16 tokens per session scan A 513fbc16838f

Subscribe to this mod's changes

coder is an agent published in the GitHub repository J-StaR-Films-Studios/VibeCode-Protocol-Suite (24 stars, last pushed 4d ago), licensed ISC. It adds 16 tokens to every session and 535 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 2026-08-30.