HarnessFlow: Agent for Claude Code

.claude/agents/robustness-analyst.md

robustness-analyst is an agent for Claude Code from HangYu8123/HarnessFlow. It costs 46 tokens per session (431 once invoked), scanned A, original, no licence file.

A helper reviewer for HarnessFlow that looks for weaknesses, possible bugs, and ways to make code more resilient when something goes wrong.

In plain words
What is it for?
Reviewing plans or code changes for robustness problems and suggesting improvements within a HarnessFlow workflow.
Why use it?
It helps uncover failures that may not appear during normal use.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is HangYu8123/HarnessFlow's own configuration. It tells Claude Code how to work on HarnessFlow itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything HarnessFlow configures →

Reuse

Borrowing it

Nothing to install: this file belongs to HangYu8123/HarnessFlow. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/HangYu8123/HarnessFlow/main/.claude/agents/robustness-analyst.md
Clone the repo
git clone --depth 1 https://github.com/HangYu8123/HarnessFlow

Made for: Claude Code.

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 robustness-analyst

README.md
[![agentmods](https://agentmods.dev/badge/agents/hangyu8123/harnessflow/robustness-analyst/github.svg)](https://agentmods.dev/agents/hangyu8123/harnessflow/robustness-analyst)
Your own site
<a href="https://agentmods.dev/agents/hangyu8123/harnessflow/robustness-analyst"><img src="https://agentmods.dev/badge/agents/hangyu8123/harnessflow/robustness-analyst/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for robustness-analyst

Your own site · 80×15
<a href="https://agentmods.dev/agents/hangyu8123/harnessflow/robustness-analyst"><img src="https://agentmods.dev/badge/agents/hangyu8123/harnessflow/robustness-analyst.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 431 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 5.1 $0.00046 $0.00431
Opus 5.5 $0.00018 $0.00172
Sonnet 5.5 $0.00009 $0.00086
Haiku 4.5 $0.00005 $0.00043

Measured 1mo ago against content hash a2bf9cfca8f5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

robustness-analyst 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 1mo 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.

.claude/agents/robustness-analyst.md · 51 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 1mo ago First seen · 51 lines · 46 tokens per session scan A a2bf9cfca8f5

Subscribe to this mod's changes

robustness-analyst is an agent published in the GitHub repository HangYu8123/HarnessFlow (458 stars, last pushed 1mo ago), with no licence file. It adds 46 tokens to every session and 431 once invoked, about $0.0002 per session on Opus 5.5. 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.

Related

Other agents, from other repositories

build-failure-analyst

Expert build-failure analyst for .NET / MSBuild repositories. Invoke when a build produced a binary log (.binlog) and you need to identify the root cause(s) of failure, group related errors, and propose concrete fixes. Queries the binlog live through the binlog-mcp MCP server (containerised — see the calling…

dotnet/skills · 108 tokens

swiftui-performance-analyzer

Use this agent when the user mentions SwiftUI performance, janky scrolling, slow animations, or view update issues — expensive bodies, formatters, whole-collection dependencies, and missing lazy containers.

CharlesWiltgen/Axiom · 45 tokens

review-obsidian-guidelines

Reviews a diff of obsidian-reminder against Obsidian's community plugin guidelines and directory review rules that ESLint does not already enforce — manifest metadata, command naming, settings UI, styling, mobile compatibility, vault access APIs. Used by the pr-review workflow; read-only.

uphy/obsidian-reminder · 63 tokens

predictive-analyst

Precognition agent. Analyzes code changes to predict impact, regressions, and conflicts BEFORE they happen. Uses dependency graphs and historical data.

softspark/ai-toolkit · 35 tokens

silent-failure-hunter

Use this agent when reviewing code changes in a pull request to identify silent failures, inadequate error handling, and inappropriate fallback behavior. Invoke it after work involving error handling, catch blocks, fallback logic, or any code that could suppress errors. See "When to invoke" in the agent body for…

nota-america/forgecat-agent-profiles · 67 tokens

analyst

../../src/claude/agents/analyst.md.

rjmurillo/ai-agents · 0 tokens