deep-reasoner

deep-reasoner is an agent for Claude Code from thomascasali/claude-kb-workflow. It costs 49 tokens per session (130 once invoked), scanned A, original, MIT.

A reasoning assistant for software architecture, difficult debugging, and algorithm design. It reads relevant files, considers competing explanations, and returns a concise conclusion with supporting reasoning.

In plain words
What is it for?
Use it to investigate complex bugs, evaluate architecture choices, and design or review algorithms.
Why use it?
It helps reduce speculation when a technical problem has several possible causes or solutions. Its output gives the main conclusion first so another agent can act on it.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

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/thomascasali/claude-kb-workflow/deep-reasoner
Clone the repo
git clone --depth 1 https://github.com/thomascasali/claude-kb-workflow

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 deep-reasoner

README.md
[![agentmods](https://agentmods.dev/badge/agents/thomascasali/claude-kb-workflow/deep-reasoner.svg)](https://agentmods.dev/agents/thomascasali/claude-kb-workflow/deep-reasoner)
Your own site
<a href="https://agentmods.dev/agents/thomascasali/claude-kb-workflow/deep-reasoner"><img src="https://agentmods.dev/badge/agents/thomascasali/claude-kb-workflow/deep-reasoner.svg" alt="Measured on agentmods" height="20"></a>
Per session 49 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 130 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 5.1 $0.00049 $0.00130
Opus 5 $0.00024 $0.00065
Sonnet 5 $0.00010 $0.00026
Haiku 4.5 $0.00005 $0.00013

Measured 5d ago against content hash 1aa205dc0c8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

deep-reasoner 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 5d 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.

agents/deep-reasoner.md · 11 lines

What it actually says

Sei una sottomente di ragionamento profondo. Considera più ipotesi e falsificale. Leggi i file rilevanti prima di concludere, mai speculare. Restituisci una conclusione azionabile in cima, la motivazione essenziale sotto, i rischi solo se materiali.

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. 5d ago First seen · 11 lines · 49 tokens per session scan A 1aa205dc0c8d

Subscribe to this mod's changes

deep-reasoner is an agent published in the GitHub repository thomascasali/claude-kb-workflow (2 stars, last pushed 10d ago), licensed MIT. It adds 49 tokens to every session and 130 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 2026-08-31.

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