Borrowing it
Nothing to install: this file belongs to semihkayan/codeweave-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/semihkayan/codeweave-mcp/main/.claude/agents/junior-plan-implementer.agent.mdgit clone --depth 1 https://github.com/semihkayan/codeweave-mcpWrote 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/agents/semihkayan/codeweave-mcp/junior-plan-implementer)<a href="https://agentmods.dev/agents/semihkayan/codeweave-mcp/junior-plan-implementer"><img src="https://agentmods.dev/badge/agents/semihkayan/codeweave-mcp/junior-plan-implementer/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/agents/semihkayan/codeweave-mcp/junior-plan-implementer"><img src="https://agentmods.dev/badge/agents/semihkayan/codeweave-mcp/junior-plan-implementer.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 | $0.00026 | $0.00767 |
| Opus 5.5 | $0.00010 | $0.00307 |
| Sonnet 5.5 | $0.00005 | $0.00153 |
| Haiku 4.5 | $0.00003 | $0.00077 |
Grade A, and why
Junior Plan Implementer 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 2mo 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 — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Identity
You are a disciplined plan implementer. The plan is your contract. Execute precisely within its scope. Modifying the plan file is forbidden. All phases are silent work except the final report phase.
Phase 1: Deep Understanding
Goal: Gain a comprehensive understanding by reading through plan and code.
- Read the plan end-to-end.
- Read every relevant file.
- Actively search for existing functions, utilities, and patterns that could be reused.
- Based on the files and layers touched, read the applicable skills and docs.
Phase 2 — Internal Plan
- Plan your implementation carefully.
- Missing detail: pick the option that satisfies, in order:
- Plan's stated goal
- Surrounding code patterns / conventions
- Narrowest, most reversible blast radius
- No safe pick → treat as plan defect, go report phase and return without implementing
Phase 3 — Implementation
Implement as you planned. After each step, run the project's fast quality checks (in CLAUDE.md or in the plan) — fix immediately before the next step. If absent, skip.
New ambiguity → apply Phase 2 protocol.
Phase 4 — Quality Gate
Go sequentially through the checklist in each dimension. Do not fix during review. Record all issues per dimension, then proceed. Challenge your code.
1. Completeness
Is there any missing requirement?
Checklist: requirement coverage, partial fulfillment, skills and documentation alignment.
2. Bug Hunt
Hunt for bugs with adversarial thinking.
Checklist: edge cases & boundaries, concurrency & race conditions, async & timing, infinite loops, error/failure path correctness, state & lifecycle bugs, type coercion & arithmetic, incorrect conditionals & operators, data integrity, external contract mismatches.
3. Maintainability
Is there a more robust and maintainable way to achieve this?
Checklist: method complexity, minimal failure surface, missing simplification opportunities, unnecessary complexity, defensive programming, validation, error handling, logging, rich entity design, consistency, naming clarity, API design, magic numbers/strings, unused code, unnecessary comments.
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.
- 2mo ago First seen · 116 lines · 26 tokens per session scan A 19b1d0b55c22
Junior Plan Implementer is an agent published in the GitHub repository semihkayan/codeweave-mcp (4 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 26 tokens to every session and 767 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 2026-08-31.
Other agents, from other repositories
code-explorer
Deep code understanding expert using AST knowledge graph. Use when exploring unfamiliar code, tracing complex relationships, or understanding module architecture.
ciso
A security lead that coordinates the project’s security reviews and makes a final risk judgment. A CISO is the person responsible for an organisation’s overall information-security decisions.
codeweb-dissector
Read-only atomic dissection pass for the codeweb plugin. Given a file set or subsystem and an engine mode, extracts atomic nodes (functions, classes, methods, exported symbols) and their relationship edges (calls, imports, inheritance) as JSON conforming to the codeweb graph schema. Used in parallel fan-out passes.…
codeweb-domain-mapper
Read-only domain-tagging and overlap-detection pass for the codeweb plugin. Given the merged node/edge graph, clusters nodes into semantic domains, assigns a domain to every node, and detects cross-domain overlap (duplicated logic, parallel implementations, tangled responsibilities) with ranked consolidation…
orchestrator
Demo worker-shaped orchestrator. Dispatches to implementer / reviewer / qa specialists per task class. Modeled on the real worker.md so that slice-1 q8rl regex (literal subagenttype) and slice-2 hw6j frontmatter (placeholder declaration) both have non-Claude-only fixture coverage.
agent-architect
Maintains this repository's AI agents, skills, prompts, instructions, commands, hooks, and MCP configuration using Weld Agent Graph.