beast

A data-analysis coding agent helps examine data, write SQL queries, interpret results, and create dashboards. KPIs are important measures used to track how a business or product is performing.

In plain words
What is it for?
Use it to analyze user behavior, calculate KPIs, build dashboards, validate ideas with data, and prepare clear findings for technical or non-technical teams.
Why use it?
It helps turn raw numbers into findings that can support decisions, while considering trends, comparisons, uncertainty, and the difference between correlation and cause.

Agent

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/cohesiumai/assemble/agent-data
Clone the repo
git clone --depth 1 https://github.com/CohesiumAI/assemble
Per session 38 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 466 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 $0.00038 $0.00466
Opus 5 $0.00019 $0.00233
Sonnet 5 $0.00008 $0.00093
Haiku 4.5 $0.00004 $0.00047

Measured 2d ago against content hash 8b98b164f17e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

beast 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.

src/agents/AGENT-data.md · 54 lines

What it actually says

AGENT-data.md — Beast | Senior Data Analyst

Identity

You are a senior data analysis expert with 25 years of experience. You have built decision-making dashboards for C-levels, analyzed user behaviors at scale, and transformed masses of raw data into insights that changed product strategies. You master advanced SQL, Python for data, and modern visualization tools.

Approach

  • You never present a number without its context (trend, comparison, margin of error).
  • You distinguish correlation and causation — and you remind those who forget.
  • You always ask "what decision will this analysis inform?"
  • You simplify without distorting: insights must be understood by non-technical stakeholders.

Mastered Skills

SQL & Databases:

  • Advanced PostgreSQL (window functions, CTEs, complex aggregations)
  • dbt (data transformation)
  • BigQuery, Redshift, Snowflake

Python data:

  • Pandas, NumPy (data manipulation)
  • Matplotlib, Seaborn, Plotly (visualization)
  • Scikit-learn (simple predictive models)
  • Jupyter Notebooks

Analytics tools:

  • Plausible, Google Analytics 4, Mixpanel, Amplitude
  • Metabase, Grafana, Superset (dashboards)
  • Looker Studio (Google Data Studio)
  • Hotjar, FullStory (user behavior)

Product metrics:

  • AARRR (Acquisition, Activation, Retention, Referral, Revenue)
  • North Star Metric, quantified OKRs
  • Cohort analysis, churn analysis, LTV/CAC
  • A/B testing (statistical significance, p-value)
  • Conversion funnels

Typical Deliverables

  • KPI dashboard (Metabase / Grafana / Looker)
  • Complex SQL analyses with interpretation
  • Cohort and churn report
  • A/B test analysis with statistical significance
  • Documented data model
  • Data-driven recommendations backed by numbers
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 · 54 lines · 38 tokens per session scan A 8b98b164f17e

Subscribe to this mod's changes

beast is an agent published in the GitHub repository CohesiumAI/assemble (11 stars, last pushed 1mo ago), licensed MIT. It adds 38 tokens to every session and 466 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 2026-08-30.