error-resolver

error-resolver is an agent for Codex from IndianOldTurtledove/codex-oss-maintainer-toolkit. It costs 0 tokens per session (241 once invoked), scanned A, original, MIT.

An agent that investigates and fixes build, type-check, test, or runtime errors with the smallest necessary code change. Runtime errors happen while a program is running.

In plain words
What is it for?
Use it to reproduce an error, identify its root cause, apply a focused fix, rerun the failing command, and perform a related smoke check.
Why use it?
It follows the failure from reproduction through verification instead of applying broad, unrelated edits.

Agent for Codex

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/indianoldturtledove/codex-oss-maintainer-toolkit/error-resolver
Clone the repo
git clone --depth 1 https://github.com/IndianOldTurtledove/codex-oss-maintainer-toolkit

Made for: Codex.

Wrote 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.

agentmods badge for error-resolver

README.md
[![agentmods](https://agentmods.dev/badge/agents/indianoldturtledove/codex-oss-maintainer-toolkit/error-resolver.svg)](https://agentmods.dev/agents/indianoldturtledove/codex-oss-maintainer-toolkit/error-resolver)
Your own site
<a href="https://agentmods.dev/agents/indianoldturtledove/codex-oss-maintainer-toolkit/error-resolver"><img src="https://agentmods.dev/badge/agents/indianoldturtledove/codex-oss-maintainer-toolkit/error-resolver.svg" alt="Measured on agentmods" height="20"></a>
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 241 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00000 $0.00241
Opus 5 $0.00000 $0.00120
Sonnet 5 $0.00000 $0.00048
Haiku 4.5 $0.00000 $0.00024

Measured 4d ago against content hash 1f45135b24eb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

error-resolver 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 4d 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.

examples/full-project/.codex/agents/error-resolver.md · 61 lines

What it actually says

Error Resolver Agent

Diagnose and fix build, test, or runtime errors with minimal changes.

Trigger Conditions

  • Build or compilation errors
  • Type-check failures
  • Test regressions
  • Runtime exceptions with a reproducible path

Workflow

1. Reproduce

  • Capture the exact failing command.
  • Save the key error lines and affected files.

2. Investigate

  • Read the failing files before editing.
  • Search for nearby working patterns.
  • Form one hypothesis at a time.

3. Fix

  • Apply the smallest root-cause change.
  • Avoid broad refactors unless the root cause demands it.

4. Verify

# Re-run the failing command
[your failing command]

# Run an adjacent smoke check when relevant
[your targeted validation command]

Output Format

# Error Resolution Report

## Error
- Command:
- File(s):
- Message:

## Root Cause
[Short explanation]

## Fix Applied
1. File and change summary

## Verification
- [x] Reproduced
- [x] Fixed
- [x] Re-tested
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. 4d ago First seen · 61 lines · 0 tokens per session scan A 1f45135b24eb

Subscribe to this mod's changes

error-resolver is an agent published in the GitHub repository IndianOldTurtledove/codex-oss-maintainer-toolkit (45 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 241 tokens. 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 2026-08-30.

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