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.
npx agentmods add skills/exmergo/dex/maintainnpx skills add exmergo/dex --skill maintaingit clone --depth 1 https://github.com/exmergo/dexWrote 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.
[](https://agentmods.dev/skills/exmergo/dex/maintain)<a href="https://agentmods.dev/skills/exmergo/dex/maintain"><img src="https://agentmods.dev/badge/skills/exmergo/dex/maintain.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00300 | $0.02688 |
| Opus 5 | $0.00150 | $0.01344 |
| Sonnet 5 | $0.00060 | $0.00538 |
| Haiku 4.5 | $0.00030 | $0.00269 |
Grade C, and why
maintain scanned grade C with 2 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 today.
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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
to install it (`curl -LsSf https://astral.sh/uv/install.sh | sh`, or Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
to install it (`curl -LsSf https://astral.sh/uv/install.sh | sh`, or How it starts
The opening of the file, as written. The whole thing — 180 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Maintain
Keep the dbt project correct as the world underneath it moves. Maintenance is the recurring half of the loop: warehouses drift, loads half-fail, models go stale, keys stop being unique, and business definitions change. This skill compares a known-good baseline against current reality, classifies what drifted, and proposes the reconciling edit. It is manual and on-demand here; continuous drift detection and automated PRs are the commercial product.
The model: baseline, detect, reconcile
Drift is measured against a baseline (the .dex/snapshot.json fingerprint of
the warehouse map and the project's per-layer definitions). Detection is
read-only; only reconcile proposes edits.
Snapshot discipline matters. A snapshot is only as trustworthy as the moment
it froze. Take one right after a known-good build (maintain snapshot), and
commit .dex/snapshot.json like a lockfile so the whole team diffs against
the same reference. Snapshot a state that is already drifted and check will
mask the very drift you care about. When you accept a change as the new normal
(re-run explore map first, then maintain snapshot); check warns when the
baseline looks stale.
On a warehouse past the rank cutoff, use explore map --full before
snapshotting. Past 50 objects explore map profiles the top 25 by rank and
enters the rest as metadata alone, and the baseline can only compare columns for
objects it has columns for. Snapshotting a partial map is still valid, and the
envelope reports column_detail_count against dataset_count plus a warning
naming what it could not cover, so the gap is visible rather than silently
mistaken for a clean bill.
How to drive it
uv run --no-project --script "${CLAUDE_SKILL_DIR}/scripts/run.py" <subcommand> [flags]
dex runs its engine through uv, which is a prerequisite and is not installed by
Claude Code. If the shell reports uv: command not found, stop and tell the user
to install it (curl -LsSf https://astral.sh/uv/install.sh | sh, or
brew install uv, or pipx install uv), then re-run. Never fall back to diffing
the warehouse against the project by hand instead: the drift axes and the baseline
comparison live in the engine, so any other path is guesswork.
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- today Changed · +37 lines 9f9414cb26ad
- 4d ago First seen · 143 lines · 300 tokens per session scan C 9d165a1a7e3d
maintain is a skill published in the GitHub repository exmergo/dex (24 stars, last pushed today), licensed Apache-2.0. It adds 300 tokens to every session and 2,688 once invoked, about $0.0015 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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