finfocus: Instructions file for Claude Code

CLAUDE.md

finfocus CLAUDE.md is an instructions file for Claude Code from rshade/finfocus. It costs 13,037 tokens per session, scanned A, original, Apache-2.0.

A project instruction guide for FinFocus, a command-line tool that calculates cloud costs from Pulumi infrastructure definitions. It also records rules for working safely in that repository.

In plain words
What is it for?
It is for building, testing, linting, validating, and running FinFocus while following the repository's development rules.
Why use it?
It makes required commands and restrictions clear, including the rule that changes must not be committed by the agent and that linting and tests must run before success is reported.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; positional $N argument; mentions Claude Code.

This is rshade/finfocus's own configuration. It tells Claude Code how to work on finfocus 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 finfocus configures →

Reuse

Borrowing it

Nothing to install: this file belongs to rshade/finfocus. 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/rshade/finfocus/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/rshade/finfocus

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.

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README.md
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Your own site
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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.

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Per session 13,037 This file is loaded in full into every session.
When invoked 13,037 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.13037 $0.13037
Opus 5.5 $0.05215 $0.05215
Sonnet 5.5 $0.02607 $0.02607
Haiku 4.5 $0.01304 $0.01304

Measured 2d ago against content hash e0fbe01c3c98, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

finfocus CLAUDE.md 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 2d 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.md · 822 lines

How it starts

The opening of the file, as written. The whole thing — 822 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

Guidance for Claude Code in this repository. It lists commands and the non-obvious rules that have caused real bugs. Feature behavior lives in specs/NNN-*/ and the code; this file points there instead of restating it.

Critical Instructions

  • Do not run git commit unless the user asks for a commit, directly or by invoking a workflow whose purpose is a commit (for example /pick-issue).
  • Always run make lint and make test before claiming success.
  • Do not modify .golangci.yml without explicit approval.
  • The constitution (.specify/memory/constitution.md) wins over any runtime mode instruction (learning, explanatory). Principle VI forbids TODOs and stubs. Record a conflict with /speckit.revisit.

Project Overview

FinFocus Core is a CLI and plugin host that calculates cloud costs from Pulumi (and Terraform state) definitions: projected estimates, actual history, and Kubernetes allocation, all through gRPC plugins. Sibling repos: finfocus-spec (protos, pluginsdk) and the finfocus-plugin-* plugins (aws-public, azure-public, ...). Cross-repo changes follow the constitution's protocol. Plugin domain knowledge stays in the plugin; core and spec get generic channels only.

Specs

Specs, plans, and tasks live in specs/NNN-*/, produced by Spec Kit (.specify/ and the /speckit-* skills). It is the only pipeline: output from other planning tools must become a Spec Kit feature folder before implementation.

Web parity (constitution Principle VII)

A user-facing CLI feature is not complete until finfocus --web reaches it. Every spec carries a Web UI Fit section. A feature with no web surface records Not applicable and a reason there and is exempt from the rest. Otherwise the internal/webui hook calls the same Go method as the CLI and the contract names it, and completion files one UX-only web-ui issue. Engine, API, or data-shape work never goes in that issue. Layout: docs/src/content/docs/architecture/web-ui.md.

Read the full file on GitHub · 822 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. 2d ago Changed · +5 lines · +275 tokens per session e0fbe01c3c98
  2. 4d ago Changed · +42 lines · +809 tokens per session 1baf9dc81148
  3. 5d ago Changed · +39 lines · +648 tokens per session d1709c785c30
  4. 6d ago Changed · +182 lines · +3,193 tokens per session 5d6e3591368e
  5. 7d ago Changed · +95 lines · +1,625 tokens per session f636bef65b78
  6. 18d ago Changed · -622 lines · -10,408 tokens per session 1e9c540507d6
  7. 20d ago Changed · +90 lines · +1,694 tokens per session 4feba062569b
  8. 21d ago Changed · +240 lines · +4,877 tokens per session c0255223ee83
  9. 22d ago Changed · +70 lines · +1,307 tokens per session c03aca959236
  10. 23d ago First seen · 681 lines · 9,017 tokens per session scan A 1485c07a6b3b

Subscribe to this mod's changes

finfocus CLAUDE.md is an instructions file published in the GitHub repository rshade/finfocus (10 stars, last pushed 2d ago), licensed Apache-2.0. It adds 13,037 tokens to every session, about $0.0521 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 2026-08-31.

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