build-fix

A command for fixing build and type errors one at a time. A build checks whether a project can be compiled or packaged, while type checking catches values used in invalid ways.

In plain words
What is it for?
Use it to detect a project's build system, run the appropriate check, group errors by file and dependency order, and make minimal fixes.
Why use it?
It turns a long list of errors into a measured sequence of small changes and verifies each fix without introducing new errors.

Command

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 commands/rohitbind123/claude-setup/build-fix
Clone the repo
git clone --depth 1 https://github.com/RohitBind123/claude-setup
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 561 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% 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 $0.00000 $0.00561
Opus 5 $0.00000 $0.00280
Sonnet 5 $0.00000 $0.00112
Haiku 4.5 $0.00000 $0.00056

Measured 2d ago against content hash 5088ccbffd1f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

build-fix 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 2d 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

100% identical to build-fix — 0 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.

commands/build-fix.md · 63 lines

How it starts

The opening of the file, as written. The whole thing — 63 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Build and Fix

Incrementally fix build and type errors with minimal, safe changes.

Step 1: Detect Build System

Identify the project's build tool and run the build:

Indicator Build Command
package.json with build script npm run build or pnpm build
tsconfig.json (TypeScript only) npx tsc --noEmit
Cargo.toml cargo build 2>&1
pom.xml mvn compile
build.gradle ./gradlew compileJava
go.mod go build ./...
pyproject.toml python -m py_compile or mypy .

Step 2: Parse and Group Errors

  1. Run the build command and capture stderr
  2. Group errors by file path
  3. Sort by dependency order (fix imports/types before logic errors)
  4. Count total errors for progress tracking

Step 3: Fix Loop (One Error at a Time)

For each error:

  1. Read the file — Use Read tool to see error context (10 lines around the error)
  2. Diagnose — Identify root cause (missing import, wrong type, syntax error)
  3. Fix minimally — Use Edit tool for the smallest change that resolves the error
  4. Re-run build — Verify the error is gone and no new errors introduced
  5. Move to next — Continue with remaining errors

Step 4: Guardrails

Stop and ask the user if:

  • A fix introduces more errors than it resolves
  • The same error persists after 3 attempts (likely a deeper issue)
  • The fix requires architectural changes (not just a build fix)
  • Build errors stem from missing dependencies (need npm install, cargo add, etc.)

Step 5: Summary

Show results:

  • Errors fixed (with file paths)
  • Errors remaining (if any)
  • New errors introduced (should be zero)
  • Suggested next steps for unresolved issues

Recovery Strategies

Situation Action
Missing module/import Check if package is installed; suggest install command
Type mismatch Read both type definitions; fix the narrower type
Circular dependency Identify cycle with import graph; suggest extraction
Version conflict Check package.json / Cargo.toml for version constraints
Build tool misconfiguration Read config file; compare with working defaults

Read the full file on GitHub · 63 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. 2d ago First seen · 63 lines · 0 tokens per session scan A 5088ccbffd1f

Subscribe to this mod's changes

build-fix is a command published in the GitHub repository RohitBind123/claude-setup (2 stars, last pushed 4mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 561 tokens. A static security scan graded it A with 0 findings. It is 100% identical to build-fix, differing in 0 lines, and is treated as a copy.