write-query

A command that turns a plain-English data question into SQL, the language used to retrieve and summarize data in a database. It supports databases including BigQuery, PostgreSQL, and MySQL.

In plain words
What is it for?
Use it to write queries for metrics such as daily active users, onboarding completion, conversion rates, or results grouped by plan and cohort.
Why use it?
It removes the need to remember SQL syntax and work out table joins from scratch. When the database structure is unclear, it can use an uploaded schema or ask for the missing details.

Command

Part of the pm-data-analytics plugin — 3 skills, 3 commands shipped together

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 commands/phuryn/pm-skills/write-query
Clone the repo
git clone --depth 1 https://github.com/phuryn/pm-skills

Or install pm-data-analytics, the plugin that ships this one along with the rest of its 3 skills, 3 commands.

Per session 19 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 622 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 $0.00019 $0.00622
Opus 5 $0.00010 $0.00311
Sonnet 5 $0.00004 $0.00124
Haiku 4.5 $0.00002 $0.00062

Measured 3d ago against content hash ba8fb8e96238, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

write-query 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 3d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

pm-data-analytics/commands/write-query.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/write-query -- SQL Query Generator

Describe what data you need in plain English and get an optimized SQL query. Supports multiple dialects and can read your schema from uploaded files.

Invocation

/write-query Show me daily active users for the last 30 days, broken down by plan tier
/write-query Find users who signed up last month but never completed onboarding
/write-query [upload a schema diagram] What's the conversion rate from trial to paid by cohort?

Workflow

Step 1: Understand the Question

Parse the user's natural language request to identify:

  • What data is being requested (metrics, dimensions, filters)
  • Time range and granularity
  • Grouping and ordering preferences
  • Output expectations (raw data, aggregated, ranked)

Step 2: Determine Schema

If a schema is available (uploaded diagram, DDL, or description):

  • Map the request to specific tables and columns
  • Identify necessary joins

If no schema is provided:

  • Ask for the database type (BigQuery, PostgreSQL, MySQL, etc.)
  • Infer a reasonable schema from the question and ask the user to confirm
  • Use common SaaS data model conventions as defaults

Step 3: Generate Query

Apply the sql-queries skill:

  • Write the SQL query in the correct dialect
  • Optimize for readability and performance
  • Include comments explaining key logic
  • Add CTEs for complex queries to improve readability
  • Handle edge cases (NULLs, timezone considerations, duplicate handling)

Step 4: Present and Iterate

## SQL Query: [What It Does]

**Dialect**: [BigQuery / PostgreSQL / MySQL / etc.]
**Tables used**: [list]

### Query
[SQL code block with comments]

### What This Returns
[Description of the output: columns, rows, expected result shape]

### Assumptions
- [Schema assumptions made]
- [Business logic assumptions]

### Notes
- [Performance considerations for large datasets]
- [Edge cases handled or flagged]

Offer:

  • "Want me to modify this — add filters, change grouping, extend the time range?"
  • "Should I create a companion query for a related metric?"
  • "Want me to build a dashboard around this query?"
  • "Need a cohort analysis version of this?"

Read the full file on GitHub · 85 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. 3d ago First seen · 85 lines · 19 tokens per session scan A ba8fb8e96238

Subscribe to this mod's changes

write-query is a command published in the GitHub repository phuryn/pm-skills (25,886 stars, last pushed 2mo ago), licensed MIT. It adds 19 tokens to every session and 622 once invoked, about $0.0001 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.