An SEO performance comparison tool. SEO means improving how easily people find a website in search engines and AI answers; this tool compares older and newer performance snapshots.

Use it for before-and-after reports, monthly comparisons, site-migration checks, content-refresh reviews, and measuring changes after a search-engine update.

It shows which search terms, pages, or visibility measures changed, so you can separate meaningful movement from normal fluctuations.

seo-drift — Command for Claude Code by indranilbanerjee

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo

git clone --depth 1 https://github.com/indranilbanerjee/digital-marketing-pro

agentmods

npx agentmods add commands/indranilbanerjee/digital-marketing-pro/seo-drift

Made for: Claude Code.

Or install digital-marketing-pro, the plugin that ships this one along with the rest of its 154 skills, 18 commands, 24 agents.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/indranilbanerjee/digital-marketing-pro/seo-drift/github.svg)](https://agentmods.dev/commands/indranilbanerjee/digital-marketing-pro/seo-drift)

Your own site

<a href="https://agentmods.dev/commands/indranilbanerjee/digital-marketing-pro/seo-drift"><img src="https://agentmods.dev/badge/commands/indranilbanerjee/digital-marketing-pro/seo-drift/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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/indranilbanerjee/digital-marketing-pro/seo-drift"><img src="https://agentmods.dev/badge/commands/indranilbanerjee/digital-marketing-pro/seo-drift.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 43 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 830 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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00043	$0.00830
Opus 5	$0.00022	$0.00415
Sonnet 5	$0.00009	$0.00166
Haiku 4.5	$0.00004	$0.00083

Measured 12d ago against content hash 272246b58c59, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

seo-drift 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 12d 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.

commands/seo-drift.md · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SEO Drift

If you see unfamiliar placeholders or need to check which data sources are connected, see CONNECTORS.md.

Takes two snapshots of SEO performance data — separated by weeks, a Core Update, a content refresh, or an algorithm change — and produces a structured drift report. Works with classic GSC exports, the new GSC AI Performance Report (3 Jun 2026), rank-tracker exports, and aeo-audit probe results. Routes to skills/seo-drift/SKILL.md.

Trigger

User runs /digital-marketing-pro:seo-drift or asks for:

"Compare this month vs last month"
"What changed since the Core Update?"
"Track AI Mode citation drift"
"Before/after for the content refresh"
"Site migration impact audit"

Inputs

Baseline CSV — older snapshot
Current CSV — newer snapshot
Source type — auto-detected via columns (GSC / GSC AI / rank tracker / AEO probe). Both snapshots must be from same source.
Noise threshold (optional) — default 5%, below which moves are classified stable. YMYL industries should use 10% to filter out Quality Rater Guidelines volatility.

Process

Load brand context
Place baseline + current CSV exports into the dated output folder
Run scripts/seo_drift.py to compute per-row deltas + classifications
Validate the four quality gates (date_range_distinct / sample_size / metric_compatibility / no_lookup_collisions)
Narrative analysis of top 10 gainers (cause hypotheses → amplification candidates)
Triage matrix for top 10 losers (is_yMYL × had_recent_change × Core_Update_window → action)
If source is GSC AI Performance Report: cross-reference AI Mode citation losses with /digital-marketing-pro:aeo-audit
Classification distribution analysis (high reshuffle = AI Mode intent reweighting)
Write PLAN.md to ${CLAUDE_PLUGIN_DATA}/{brand}/seo/seo-drift/{date}/

Output

Numbered intermediate files under ${CLAUDE_PLUGIN_DATA}/{brand}/seo/seo-drift/{YYYY-MM-DD}/:

00-input.md, 01-baseline.csv, 02-current.csv
03-drift-run.json (raw script output), 04-quality-scorecard.md
05-biggest-gainers.md, 05-biggest-losers.md
06-ai-mode-shift.md (only when source is GSC AI Performance Report)
07-classification-distribution.md
PLAN.md (the deliverable)

Read the full file on GitHub · 61 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.

12d ago First seen · 61 lines · 43 tokens per session scan A 272246b58c59

Subscribe to this mod's changes

seo-drift is a command published in the GitHub repository indranilbanerjee/digital-marketing-pro (806 stars, last pushed 4d ago), licensed MIT. It adds 43 tokens to every session and 830 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.

Analytics and metrics Claude Code Marketing and SEO aeo claude-plugin content-marketing marketing-automation seo

seo-drift

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

How it starts

SEO Drift

Trigger

Inputs

Process

Output

What this file has done since we first saw it

Other commands, from other repositories

brand-setup

output-folder

create-content

audit-content

content-brief

publish