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 instructions/serpbase-dev/serpbase-skill/claude-mdgit clone --depth 1 https://github.com/serpbase-dev/serpbase-skillWhat 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 | $0.00308 | $0.00308 |
| Opus 5 | $0.00154 | $0.00154 |
| Sonnet 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 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.
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.
- 2d 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 (2 stars, last pushed 3mo ago), licensed MIT. It adds 308 tokens to every session, about $0.0015 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 2026-08-31.
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