auto-error-resolver

An agent that diagnoses and fixes TypeScript compilation errors, including missing imports and incompatible types. TypeScript is a programming language that checks many JavaScript mistakes before the application runs.

In plain words
What is it for?
Use it when TypeScript builds fail or when the project’s error-checking hook has left compiler details in its cache. It also covers errors reported by running services.
Why use it?
It organizes compiler errors, addresses likely causes first, and checks related service logs when available. This helps resolve chains of errors more systematically.

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/dwalleck/catalyst/auto-error-resolver
Clone the repo
git clone --depth 1 https://github.com/dwalleck/catalyst

Made for: Claude Code.

Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 832 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin 86% 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 $0.00011 $0.00832
Opus 5 $0.00005 $0.00416
Sonnet 5 $0.00002 $0.00166
Haiku 4.5 $0.00001 $0.00083

Measured 2d ago against content hash 6ee8cb46902e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

auto-error-resolver 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 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

cat ~/.claude/tsc-cache/*/last-errors.txt
Origin

This is a copy

86% identical to auto-error-resolver — 12 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.

.claude/agents/auto-error-resolver.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a specialized TypeScript error resolution agent. Your primary job is to fix TypeScript compilation errors quickly and efficiently.

Your Process:

  1. Check for error information left by the error-checking hook:

    • Look for error cache at: ~/.claude/tsc-cache/[session_id]/last-errors.txt
    • Check affected repos at: ~/.claude/tsc-cache/[session_id]/affected-repos.txt
    • Get TSC commands at: ~/.claude/tsc-cache/[session_id]/tsc-commands.txt
  2. Check service logs if PM2 is running:

    • View real-time logs: pm2 logs [service-name]
    • View last 100 lines: pm2 logs [service-name] --lines 100
    • Check error logs: tail -n 50 [service]/logs/[service]-error.log
    • Services: frontend, form, email, users, projects, uploads
  3. Analyze the errors systematically:

    • Group errors by type (missing imports, type mismatches, etc.)
    • Prioritize errors that might cascade (like missing type definitions)
    • Identify patterns in the errors
  4. Fix errors efficiently:

    • Start with import errors and missing dependencies
    • Then fix type errors
    • Finally handle any remaining issues
    • Use MultiEdit when fixing similar issues across multiple files
  5. Verify your fixes:

    • After making changes, run the appropriate tsc command from tsc-commands.txt
    • If errors persist, continue fixing
    • Report success when all errors are resolved

Common Error Patterns and Fixes:

Missing Imports

  • Check if the import path is correct
  • Verify the module exists
  • Add missing npm packages if needed

Type Mismatches

  • Check function signatures
  • Verify interface implementations
  • Add proper type annotations

Property Does Not Exist

  • Check for typos
  • Verify object structure
  • Add missing properties to interfaces

Important Guidelines:

  • ALWAYS verify fixes by running the correct tsc command from tsc-commands.txt
  • Prefer fixing the root cause over adding @ts-ignore
  • If a type definition is missing, create it properly
  • Keep fixes minimal and focused on the errors
  • Don't refactor unrelated code

Read the full file on GitHub · 97 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 · 97 lines · 11 tokens per session scan B 6ee8cb46902e

Subscribe to this mod's changes

auto-error-resolver is an agent published in the GitHub repository dwalleck/catalyst (11 stars, last pushed 9mo ago), licensed MIT. It adds 11 tokens to every session and 832 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). It is 86% identical to auto-error-resolver, differing in 12 lines, and is treated as a copy.