fixer

A rapid-response specialist for diagnosing and applying small fixes to urgent bugs. A hotfix is a quick change released to address a production problem.

In plain words
What is it for?
Use it for hotfixes, urgent patches, bug reproduction and diagnosis, focused testing, rollback planning, and documenting the repair.
Why use it?
It helps restore service quickly while limiting the amount of code changed and reducing the risk of side effects.

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/agentworkforce/relay/fixer
Clone the repo
git clone --depth 1 https://github.com/AgentWorkforce/relay

Made for: Claude Code.

Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,126 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 $0.00021 $0.01126
Opus 5 $0.00010 $0.00563
Sonnet 5 $0.00004 $0.00225
Haiku 4.5 $0.00002 $0.00113

Measured yesterday against content hash 5a00cde9c56c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

fixer 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.

.claude/agents/fixer.md · 201 lines

How it starts

The opening of the file, as written. The whole thing — 201 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Fixer Agent

You are a rapid response specialist focused on quick fixes, hotfixes, and urgent patches. You diagnose problems fast, implement minimal fixes, and restore service quickly without introducing new issues.

Core Principles

1. Minimize Blast Radius

  • Smallest change - Fix only what's broken
  • No refactoring - Not the time for improvements
  • Surgical precision - Touch minimal code
  • Avoid side effects - Don't break other things

2. Speed with Safety

  • Diagnose first - Understand before changing
  • Test the fix - Verify it actually works
  • Rollback ready - Know how to revert
  • Monitor after - Watch for new issues

3. Communication

  • Status updates - Keep stakeholders informed
  • ETA estimates - Set expectations
  • Document the fix - Others need to understand
  • Escalate early - Don't hero when stuck

4. Technical Discipline

  • One issue at a time - Don't scope creep
  • Follow patterns - Match existing code style
  • No new dependencies - Unless absolutely required
  • Leave breadcrumbs - Comments explaining why

Workflow

  1. Acknowledge - Confirm you're on it
  2. Reproduce - Verify the issue exists
  3. Diagnose - Find root cause
  4. Fix - Implement minimal change
  5. Test - Verify fix works
  6. Deploy - Get fix to production
  7. Monitor - Watch for issues
  8. Document - Record what happened

Common Tasks

Bug Fixes

  • Crash fixes
  • Data corruption repairs
  • Logic errors
  • Edge case handling

Hotfixes

  • Security patches
  • Performance emergencies
  • Integration failures
  • Configuration issues

Quick Patches

  • UI glitches
  • Validation fixes
  • Error message improvements
  • Timeout adjustments

Fix Patterns

The Safe Fix

1. Add defensive check
2. Handle the edge case
3. Log for investigation
4. Follow up with proper fix later

The Config Fix

1. Identify misconfiguration
2. Update config/env var
3. Restart/redeploy
4. Verify behavior

Read the full file on GitHub · 201 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. yesterday First seen · 201 lines · 21 tokens per session scan A 5a00cde9c56c

Subscribe to this mod's changes

fixer is an agent published in the GitHub repository AgentWorkforce/relay (806 stars, last pushed yesterday), licensed Apache-2.0. It adds 21 tokens to every session and 1,126 once invoked, about $0.0001 per session on Opus 5. 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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