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seoagent: Instructions file for Claude Code

CLAUDE.md

seoagent CLAUDE.md is an instructions file for Claude Code from yagomp/seoagent. It costs 593 tokens per session, scanned A, original, MIT.

A project-specific instruction file for SEOAgent, an open-source toolkit for keyword research, search-rank tracking, website audits, competitor analysis, and related SEO work. It documents the TypeScript monorepo, its packages, tools, and commands.

In plain words
What is it for?
Use it when adding features, finding the core business logic, running builds or tests, or working with the command-line tool, MCP server, dashboard, and database.
Why use it?
It gives a coding agent the project structure and working conventions it needs to make changes in the right place and run the right checks.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: positional $N argument.

This is yagomp/seoagent's own configuration. It tells Claude Code how to work on seoagent itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything seoagent configures →

not rated 0repo 6mo ago A scan 593 tokens original MIT
View source ↗ yagomp/seoagent
Reuse

Borrowing it

Nothing to install: this file belongs to yagomp/seoagent. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/yagomp/seoagent/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/yagomp/seoagent

Made for: Claude Code.

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.

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README.md
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Your own site
<a href="https://agentmods.dev/instructions/yagomp/seoagent/claude-md"><img src="https://agentmods.dev/badge/instructions/yagomp/seoagent/claude-md/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.

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Per session 593 This file is loaded in full into every session.
When invoked 593 The same file — it is already loaded in full.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00593 $0.00593
Opus 5.5 $0.00237 $0.00237
Sonnet 5.5 $0.00119 $0.00119
Haiku 4.5 $0.00059 $0.00059

Measured 1mo ago against content hash f9df59746a41, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

seoagent CLAUDE.md 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 1mo 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.

CLAUDE.md · 57 lines

How it starts

The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SEOAgent

Open-source, agent-first SEO toolkit — keyword research, rank tracking, site audits, competitor analysis, content gap analysis, domain reputation, and AI-powered strategy generation.

Architecture

TypeScript pnpm monorepo with 4 packages:

  • packages/core/ (@seoagent/core) — all business logic. Every feature is a function here first.
  • packages/cli/ (seoagent) — commander.js CLI, thin wrapper over core
  • packages/mcp/ (seoagent-mcp) — MCP server with 24 tools, thin wrapper over core
  • packages/dashboard/ — Vite + React + Tailwind local web UI (read-only)

Tech Stack

  • TypeScript, Node.js >= 20, pnpm workspaces
  • SQLite via better-sqlite3 (one DB per project at ~/.seoagent/projects/<slug>/seoagent.db)
  • Vitest for testing (260 tests across 38 files)
  • DataForSEO for keyword/SERP/backlink data
  • Google Search Console API (googleapis)
  • LLM strategy: Anthropic SDK, OpenAI SDK, Ollama (fetch)
  • Crawler: undici + cheerio
  • Dashboard: Vite, React, React Router, Tailwind CSS v4, Recharts

Key Commands

pnpm install          # install all deps
pnpm build            # build all packages
pnpm test             # run all tests
pnpm -r run test      # run tests across all packages

# Core only
cd packages/core && pnpm test
cd packages/core && pnpm build

Code Conventions

  • All business logic in packages/core/src/. CLI/MCP/Dashboard are thin wrappers.
  • Barrel export from packages/core/src/index.ts — add new exports there.
  • Tests in packages/core/src/__tests__/ using Vitest with globals.
  • TDD workflow: test first, implement, verify.
  • SQLite schema in packages/core/src/schema.ts — tables created via openDatabase().
  • Config at ~/.seoagent/config.json, projects at ~/.seoagent/projects/<slug>/.
  • SEOAGENT_HOME env var overrides ~/.seoagent (used in tests with temp dirs).

Data Sources

  1. Free: Google Search Console API, PageSpeed Insights, local crawler
  2. Paid: DataForSEO (~$0.001/query) — keyword volumes, SERP, backlinks
  3. Derived: content gaps, rank deltas, audit scores, strategy (LLM or rule-based)

Read the full file on GitHub · 57 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. 1mo ago First seen · 57 lines · 593 tokens per session scan A f9df59746a41

Subscribe to this mod's changes

seoagent CLAUDE.md is an instructions file published in the GitHub repository yagomp/seoagent (0 stars, last pushed 6mo ago), licensed MIT. It adds 593 tokens to every session, about $0.0024 per session on Opus 5.5. 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 2026-08-31.

Marketing and SEOai-agentsbacklinksclicompetitor-analysiscontent-gapdataforseo
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