malloy-notebook-chat

malloy-notebook-chat is a skill for Claude Code, Codex from malloydata/publisher. It costs 55 tokens per session (565 once invoked), scanned A, original, MIT.

A workflow for answering questions using a notebook or saved report as the main source of context. It treats the notebook's cells and queries as the user's intended data.

In plain words
What is it for?
Use it when the chat is connected to a Malloy notebook or report to run its queries, summarize findings, and answer questions about its data.
Why use it?
It prevents the agent from ignoring the report, asking unnecessary clarification questions, or answering from unrelated information.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when the chat is connected to a Malloy notebook or report to run its queries, summarize findings, and answer questions about its data.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/malloydata/publisher/malloy-notebook-chat
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.

Any agent
npx skills add malloydata/publisher --skill malloy-notebook-chat
Clone the repo
git clone --depth 1 https://github.com/malloydata/publisher

Made for: Claude Code, Codex.

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 malloy-notebook-chat

README.md
[![agentmods](https://agentmods.dev/badge/skills/malloydata/publisher/malloy-notebook-chat/github.svg)](https://agentmods.dev/skills/malloydata/publisher/malloy-notebook-chat)
Your own site
<a href="https://agentmods.dev/skills/malloydata/publisher/malloy-notebook-chat"><img src="https://agentmods.dev/badge/skills/malloydata/publisher/malloy-notebook-chat/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 malloy-notebook-chat

Your own site · 80×15
<a href="https://agentmods.dev/skills/malloydata/publisher/malloy-notebook-chat"><img src="https://agentmods.dev/badge/skills/malloydata/publisher/malloy-notebook-chat.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 565 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 19
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
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 $0.00055 $0.00565
Opus 5 $0.00028 $0.00282
Sonnet 5 $0.00011 $0.00113
Haiku 4.5 $0.00006 $0.00056

Measured 5d ago against content hash 5054a48e030f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

malloy-notebook-chat 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.

skills/malloy-notebook-chat/SKILL.md · 25 lines

What it actually says

Notebook/Report Chat Workflow

Steps to follow when the user asks a question:

Tool names are written bare here - get_context, execute_query, search_malloy_docs. The exact prefixed name depends on the host surface; match each against the tools you actually have.

  1. Interpret the user's question as being about the bound notebook/report unless they explicitly ask about something else. Pronouns and shorthand ("this", "it", "the notebook", "the report", "the data", "what's here", "summarize", "key insights", "findings", "anything interesting") all refer to the notebook above. Never respond with a clarifying question about what the user means when the referent is clearly this notebook.
  2. Start with a brief, natural acknowledgment that references the specific question: one sentence, varied wording.
  3. The notebook above IS your context. Its code cells define the queries the user cares about. For any question:
  • For broad requests like "summarize", "what are the key insights", or "tell me about this notebook", run the notebook's queries via execute_query and synthesize the findings across them. Do NOT ask the user to be more specific.
  • If the question can be answered by a query already in the notebook, run that cell's query via execute_query (exact code, or a minor variation like adding a filter or changing a group_by).
  • If the question asks for an analysis that is clearly NOT in the notebook (new source, different package, different domain), then, and only then, call get_context to explore.
  • Do NOT call get_context as a default first step. The notebook already tells you what's available.
  1. Before writing or modifying a query, read the malloy-queries skill for syntax patterns. When you tweak a query (add a where: clause, change a group_by, etc.), do NOT add #(filter) annotations or given: declarations: both live on the source's model file and are inherited by this notebook automatically. Query-level where: filtering inside a cell is fine; declaring a new runtime parameter is a model change, not a chat-time change.
  2. Summarize insights from query results. Do not echo raw rows: the user sees them rendered.
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 Changed 5054a48e030f
  2. 9d ago First seen · 25 lines · 55 tokens per session scan A f06221136527

Subscribe to this mod's changes

malloy-notebook-chat is a skill published in the GitHub repository malloydata/publisher (100 stars, last pushed today), licensed MIT. It adds 55 tokens to every session and 565 once invoked, about $0.0003 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 2026-08-30.

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