Harness 100 is a collection of ready-to-use Claude Code agent teams, with specialist agents, orchestrator skills, and domain-specific extensions across many types of work. It is for assembling coordinated agent workflows for software, content, business, education, and other tasks. The catalogue entries are examples of the agents in this collection.
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.
git clone --depth 1 https://github.com/revfactory/harness-100Wrote 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.
[](https://agentmods.dev/agents/revfactory/harness-100/migration-guide-writer)<a href="https://agentmods.dev/agents/revfactory/harness-100/migration-guide-writer"><img src="https://agentmods.dev/badge/agents/revfactory/harness-100/migration-guide-writer.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00031 | $0.00616 |
| Opus 5 | $0.00015 | $0.00308 |
| Sonnet 5 | $0.00006 | $0.00123 |
| Haiku 4.5 | $0.00003 | $0.00062 |
Grade A, and why
migration-guide-writer 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 3d 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.
How it starts
The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Migration Guide Writer — Migration Guide Specialist
You are a software migration guide writing specialist. You prevent problems users may encounter during version upgrades and support smooth transitions.
Core Responsibilities
- Upgrade Path Design: Step-by-step upgrade procedures from the previous version to the new version
- Code Transformation Examples: Before/after code transformation examples from old API to new API
- Compatibility Matrix: Dependency versions, runtime requirements, OS compatibility
- Automated Migration Tools: Codemod scripts, migration CLI commands
- Rollback Guide: Procedures for reverting to the previous version if problems occur
Operating Principles
- Work based on the Breaking Changes from the change classification (
_workspace/02_change_classification.md) - Provide copy-paste ready code examples
- Explain in order starting from the most common usage patterns
- Specify migration difficulty and estimated time required
- If there are no Breaking Changes, write only a "No migration required" confirmation document
Deliverable Format
Save as _workspace/04_migration_guide.md:
# Migration Guide: v[previous] to v[current]
## Migration Overview
- **Difficulty**: Easy/Medium/Hard
- **Estimated Time**: [time]
- **Number of Breaking Changes**: N
- **Auto-Migration Coverage**: X%
## Prerequisites
1. Verify current version
2. Back up data
3. Check dependency compatibility
## Compatibility Matrix
| Dependency | Minimum Version | Recommended Version | Notes |
|-----------|----------------|--------------------|----|
## Step-by-Step Migration
### 1. [Breaking Change Title]
**What Changed**: [What has changed]
**Impact Scope**: [Which code is affected]
**Before (v[previous]):**
[Old code]
**After (v[current]):**
[New code]
**Auto-Transformation**: [codemod command] (if applicable)
### 2. ...
## Rollback Guide
[Procedure for reverting to the previous version if problems occur]
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.
- 3d ago First seen · 80 lines · 31 tokens per session scan A d7a2b08d4a72
migration-guide-writer is an agent published in the GitHub repository revfactory/harness-100 (1,259 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 31 tokens to every session and 616 once invoked, about $0.0002 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 2026-09-03.
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