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exa-search

exa-search is a skill for Claude Code, Codex from halflifezyf2680/Skill-Shelf. It costs 116 tokens per session (1,189 once invoked), scanned A, original, no licence file.

A web-search and URL-reading tool for finding current, scientific, and technical information, including research papers.

In plain words
What is it for?
It is for semantic web searches, research-paper searches with academic filters, and fetching content from URLs.
Why use it?
It helps when ordinary web searches are too broad or when information must be taken from a specific webpage or academic source.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 4repo changed 5d ago A scan 116 tokens custom licence

Good fit It is for semantic web searches, research-paper searches with academic filters, and fetching content from URLs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/halflifezyf2680/skill-shelf/exa-search
View source ↗ halflifezyf2680/Skill-Shelf
Install

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.

Any agent
npx skills add halflifezyf2680/Skill-Shelf --skill exa-search
Clone the repo
git clone --depth 1 https://github.com/halflifezyf2680/Skill-Shelf

Made for: Claude Code, Codex.

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.

agentmods badge for exa-search

README.md
[![agentmods](https://agentmods.dev/badge/skills/halflifezyf2680/skill-shelf/exa-search/github.svg)](https://agentmods.dev/skills/halflifezyf2680/skill-shelf/exa-search)
Your own site
<a href="https://agentmods.dev/skills/halflifezyf2680/skill-shelf/exa-search"><img src="https://agentmods.dev/badge/skills/halflifezyf2680/skill-shelf/exa-search/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.

agentmods 80×15 button for exa-search

Your own site · 80×15
<a href="https://agentmods.dev/skills/halflifezyf2680/skill-shelf/exa-search"><img src="https://agentmods.dev/badge/skills/halflifezyf2680/skill-shelf/exa-search.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 116 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,189 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 unknown 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 $0.00116 $0.01189
Opus 5 $0.00058 $0.00594
Sonnet 5 $0.00023 $0.00238
Haiku 4.5 $0.00012 $0.00119

Measured 5d ago against content hash 1986353174a6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

exa-search 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 5d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/exa_extract.py, scripts/exa_search.py, tests/test_exa_search.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

data/hub/packages/academic-research/exa-search/SKILL.md · 103 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

6 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.

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. 5d ago Changed · +7 lines 1986353174a6
  2. 10d ago First seen · 96 lines · 116 tokens per session scan A 32feb76bc227

Subscribe to this mod's changes

exa-search is a skill published in the GitHub repository halflifezyf2680/Skill-Shelf (4 stars, last pushed 5d ago), with no licence file. It adds 116 tokens to every session and 1,189 once invoked, about $0.0006 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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