build

An implementation agent that applies an approved plan directly to code using available tools.

In plain words
What is it for?
It is for implementing features or fixes incrementally, running tests after each part, and adding review and security checks during development.
Why use it?
It handles the coding work after a plan is agreed, while checking each small change and reviewing the result at set points.

Agent for Claude Code

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.

agentmods
npx agentmods add agents/pablocoello/dotmesh/build
Clone the repo
git clone --depth 1 https://github.com/PabloCoello/dotmesh

Made for: Claude Code.

Per session 43 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,142 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin unknown 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 $0.00043 $0.01142
Opus 5 $0.00022 $0.00571
Sonnet 5 $0.00009 $0.00228
Haiku 4.5 $0.00004 $0.00114

Measured yesterday against content hash 27f7d3eb526e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

build scanned grade B with 1 finding 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 yesterday.

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.

Recursive force deletemediumDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

You have full Bash access. Treat every destructive command (`rm -rf`, `git push --force`, `git reset --hard`, etc.) as needing explicit user confirmation, not as routine. The discipline comes from you, not from a permiss

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

claude/.claude/agents/build.md · 89 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. yesterday First seen · 89 lines · 43 tokens per session scan B 27f7d3eb526e

Subscribe to this mod's changes

build is an agent published in the GitHub repository PabloCoello/dotmesh (2 stars, last pushed 2d ago), with no licence file. It adds 43 tokens to every session and 1,142 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.