tabless CLAUDE.md

A set of project instructions for coding agents working on tabless, a local shelf and reader for HTML that agents produce.

In plain words
What is it for?
Guiding work on tabless before and during code changes, including its reader window, project tabs, local-only operation, optional dependencies, copying behavior, and layout-related files.
Why use it?
It records the project's constraints and design decisions so changes do not accidentally break its intended behavior or architecture.

Instructions file

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 instructions/starless0912/tabless/claude-md
Clone the repo
git clone --depth 1 https://github.com/starless0912/tabless
Per session 821 This file is loaded in full into every session.
When invoked 821 The same file — it is already loaded in full.
Security scan A 1 finding. 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 $0.00821 $0.00821
Opus 5 $0.00411 $0.00411
Sonnet 5 $0.00164 $0.00164
Haiku 4.5 $0.00082 $0.00082

Measured 2d ago against content hash 2fc6c332b0a1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

tabless CLAUDE.md scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -X POST http://127.0.0.1:6181/api/reload
CLAUDE.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

tabless — notes for coding agents

A local shelf and reader for HTML that coding agents produce. README.md says what it is for users; this file is what you need to work on it.

Before changing anything

Read CONTRIBUTING.md first. It lists seven design constraints that are not up for negotiation, and docs/design-notes.md records the failure behind each one. Both exist because this codebase's hard parts are decisions, not algorithms — the code is simple and the reasons are not.

The short version, so you recognise when you are about to cross one:

  1. One reader window, ever. Projects are tabs.
  2. No process management. A live entry whose service is down opens blank, on purpose.
  3. Copies, never references.
  4. No required third-party dependencies (pyyaml is optional and must degrade silently).
  5. Loopback only.
  6. Types stay an open set; nothing in the reader may key off a specific type name.
  7. Starring lifts an entry out of its group rather than duplicating it.

Layout

src/tabless/config.py paths and limits. Read them as config.HOME, never from config import HOMEreconfigure() has to be able to reach you
src/tabless/core.py storage, index, dependency closure, version folding
src/tabless/projects.py project inference and colours
src/tabless/server.py the local service, window reuse, page dressing
src/tabless/cli.py · client.py commands, and talking to the service
src/tabless/reader.html the whole front end, one file
src/tabless/locales/*.json every user-facing string, shared by CLI and reader
tests/ one case per historical bug; docstrings say what broke

Working on it

pip install -e .
python -m unittest discover -s tests -v
ruff check .

# Never develop against a real library
export TABLESS_HOME=/tmp/tabless-dev TABLESS_PORT=6181
tabless demo
tabless server                                    # foreground, watch it

# reader.html or locales/*.json changed? No restart needed:
curl -X POST http://127.0.0.1:6181/api/reload

Read the full file on GitHub · 72 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 First seen · 72 lines · 821 tokens per session scan A 2fc6c332b0a1

Subscribe to this mod's changes

tabless CLAUDE.md is an instructions file published in the GitHub repository starless0912/tabless (2 stars, last pushed 1mo ago), licensed MIT. It adds 821 tokens to every session, about $0.0041 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.