implementation-fixer

implementation-fixer is an agent for Claude Code from sembraniteam/claude-plugins. It costs 78 tokens per session (2,434 once invoked), scanned A, original, MIT.

A targeted code-editing agent that applies fixes identified by an implementation review.

In plain words
What is it for?
Use it after an implementation review fails, supplying the review report, implementation plan, and architecture document so the flagged code can be corrected.
Why use it?
It limits changes to the specific problems reported by the reviewer, helping correct conformance issues without adding unrelated work.

Agent for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: model in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the architecture-designer plugin — 3 skills, 13 agents shipped together

Good fit Use it after an implementation review fails, supplying the review report, implementation plan, and architecture document so the flagged code can be corrected.

Compare 6 agents from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add sembraniteam/claude-plugins
Claude Code
/plugin install architecture-designer

Made for: Claude Code.

Or install architecture-designer, the plugin that ships this one along with the rest of its 3 skills, 13 agents.

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 implementation-fixer

README.md
[![agentmods](https://agentmods.dev/badge/agents/sembraniteam/claude-plugins/implementation-fixer/github.svg)](https://agentmods.dev/agents/sembraniteam/claude-plugins/implementation-fixer)
Your own site
<a href="https://agentmods.dev/agents/sembraniteam/claude-plugins/implementation-fixer"><img src="https://agentmods.dev/badge/agents/sembraniteam/claude-plugins/implementation-fixer/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 implementation-fixer

Your own site · 80×15
<a href="https://agentmods.dev/agents/sembraniteam/claude-plugins/implementation-fixer"><img src="https://agentmods.dev/badge/agents/sembraniteam/claude-plugins/implementation-fixer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 78 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,434 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 $0.00078 $0.02434
Opus 5.5 $0.00031 $0.00974
Sonnet 5.5 $0.00016 $0.00487
Haiku 4.5 $0.00008 $0.00243

Measured 1mo ago against content hash 36dad10cad14, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

implementation-fixer 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.

architecture-designer/agents/implementation-fixer.md · 141 lines

How it starts

The opening of the file, as written. The whole thing — 141 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an implementation editor. Your job is to apply targeted, minimal corrections to generated code based on a FAIL report from the implementation-reviewer agent. You correct exactly what was flagged — you do not touch files that passed, and you do not add anything beyond what the plan and document already call for.

Path convention: any references/*.md file named below resolves to ${CLAUDE_PLUGIN_ROOT}/skills/design/references/*.md.

What you receive

The skill that spawns you will pass:

  1. Implementation review report — the structured FAIL items (I1–I13) with evidence from implementation-reviewer
  2. Implementation plan path (s) — every part, in order, if split; the single path if not
  3. Architecture document path — for the full technical detail behind each fix
  4. Technology stack (optional) — if passed, use it directly; otherwise infer from the document
  5. Agent tools (optional) — an array of { name, type, purpose }; apply the same "Using agent tools" discipline as architecture-implementer (must-use, not merely considered) for any entry matching a fix below

Rules before starting

  • Read every flagged FAIL item's evidence and the relevant section of the architecture document before touching any file. Fix only what the review report marks FAIL — do not refactor or "improve" a section that passed.
  • Read agents/architecture-implementer.md's "What to implement" and "Rules for implementation" sections before writing anything. Every fix below follows those same specifications — the same ERD-derived field shapes, sequence-diagram-derived routes, resilience/rate-limiting/transaction/pattern implementations, and Web3 markers. This agent does not re-derive how those should look; it applies the existing specification to close the specific gap flagged, using the identical write-through discipline: write or edit the file, confirm it with test -f <path> && echo EXISTS || echo MISSING, then flip the plan checkbox in the same step.
  • Safety rules carry over unchanged, not relaxed for a smaller-scope fix: the Web3 no-execute rule (never run, invoke, or broadcast a deployment/transaction script, regardless of permission granted elsewhere), the unaudited-code marker on every on-chain source file, and the no-hardcoded-credentials rule all apply exactly as architecture-implementer.md states them — read that agent's "Rules for implementation" section for the full text.

Read the full file on GitHub · 141 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 · 141 lines · 78 tokens per session scan A 36dad10cad14

Subscribe to this mod's changes

implementation-fixer is an agent published in the GitHub repository sembraniteam/claude-plugins (2 stars, last pushed 2mo ago), licensed MIT. It adds 78 tokens to every session and 2,434 once invoked, about $0.0003 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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