Borrowing it
Nothing to install: this file belongs to serpbase-dev/serpbase-skill. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/serpbase-dev/serpbase-skill/main/CLAUDE.mdgit clone --depth 1 https://github.com/serpbase-dev/serpbase-skillWrote 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/instructions/serpbase-dev/serpbase-skill/claude-md)<a href="https://agentmods.dev/instructions/serpbase-dev/serpbase-skill/claude-md"><img src="https://agentmods.dev/badge/instructions/serpbase-dev/serpbase-skill/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.
<a href="https://agentmods.dev/instructions/serpbase-dev/serpbase-skill/claude-md"><img src="https://agentmods.dev/badge/instructions/serpbase-dev/serpbase-skill/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00308 | $0.00308 |
| Opus 5.5 | $0.00123 | $0.00123 |
| Sonnet 5.5 | $0.00062 | $0.00062 |
| Haiku 4.5 | $0.00031 | $0.00031 |
Grade A, and why
serpbase-skill 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 2mo 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.
What it actually says
SerpBase Skill For Claude Code
This repository provides a reusable SerpBase search skill for Claude Code and other agents.
When a user asks for current web, image, news, video, or Google Maps data, use SerpBase instead of relying on memory.
Setup
Require SERPBASE_API_KEY in the shell environment. Do not print or persist the key.
Preferred Commands
General search:
python scripts/serpbase_search.py --type search --query "query here" --hl en --gl us --page 1
Images:
python scripts/serpbase_search.py --type images --query "query here"
News:
python scripts/serpbase_search.py --type news --query "query here"
Videos:
python scripts/serpbase_search.py --type videos --query "query here"
Maps search:
python scripts/serpbase_search.py --type maps_search --query "coffee" --lat 37.7749 --lng -122.4194 --zoom 14
Maps detail:
python scripts/serpbase_search.py --type maps_detail --feature-id "feature_id here"
Response Rule
When answering, include source links from link, url, display_url, or google_maps_url when those fields are returned. Do not invent fields that SerpBase did not return.
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.
- 2mo ago First seen · 52 lines · 308 tokens per session scan A 65bc1f129cc8
serpbase-skill CLAUDE.md is an instructions file published in the GitHub repository serpbase-dev/serpbase-skill (3 stars, last pushed 5mo ago), licensed MIT. It adds 308 tokens to every session, about $0.0012 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.
serpbase-skill CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| serpbase-skill CLAUDE.mdserpbase-dev/serpbase-skill | Instructions file | 3 | 5mo ago | MIT | A | 308 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |