build-fix

A command that checks a TypeScript project for type and build errors, then fixes them with small code changes. TypeScript is a programming language that checks many mistakes before the program runs.

In plain words
What is it for?
Use it to fix incorrect types, missing imports, syntax errors, missing modules, and missing checks for possibly absent values.
Why use it?
It removes the need to diagnose and repair a long list of compiler errors manually while reducing unrelated changes.

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/fmflurry/settings-opencode/build-fix
Clone the repo
git clone --depth 1 https://github.com/fmflurry/settings-opencode
Per session 9 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 399 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 $0.00009 $0.00399
Opus 5 $0.00005 $0.00199
Sonnet 5 $0.00002 $0.00080
Haiku 4.5 $0.00001 $0.00040

Measured yesterday against content hash 7aa311924b65, 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 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.

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 · 57 lines

What it actually says

Build Fix Command

Fix build and TypeScript errors with minimal changes: $ARGUMENTS

Your Task

  1. Run type check: npx tsc --noEmit
  2. Collect all errors
  3. Fix errors one by one with minimal changes
  4. Verify each fix doesn't introduce new errors
  5. Run final check to confirm all errors resolved

Approach

DO:

  • ✅ Fix type errors with correct types
  • ✅ Add missing imports
  • ✅ Fix syntax errors
  • ✅ Make minimal changes
  • ✅ Preserve existing behavior
  • ✅ Run tsc --noEmit after each change

DON'T:

  • ❌ Refactor code
  • ❌ Add new features
  • ❌ Change architecture
  • ❌ Use any type (unless absolutely necessary)
  • ❌ Add @ts-ignore comments
  • ❌ Change business logic

Common Error Fixes

Error Fix
Type 'X' is not assignable to type 'Y' Add correct type annotation
Property 'X' does not exist Add property to interface or fix property name
Cannot find module 'X' Install package or fix import path
Argument of type 'X' is not assignable Cast or fix function signature
Object is possibly 'undefined' Add null check or optional chaining

Verification Steps

After fixes:

  1. npx tsc --noEmit - should show 0 errors
  2. npm run build - should succeed
  3. npm test - tests should still pass

IMPORTANT: Focus on fixing errors only. No refactoring, no improvements, no architectural changes. Get the build green with minimal diff.

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 · 57 lines · 9 tokens per session scan A 7aa311924b65

Subscribe to this mod's changes

build-fix is a command published in the GitHub repository fmflurry/settings-opencode (172 stars, last pushed 19d ago), licensed MIT. It adds 9 tokens to every session and 399 once invoked, about $0.0000 per session on Opus 5. 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.