search-harness

search-harness is a skill for Claude Code from SunflowersLwtech/sunkit. It costs 60 tokens per session (305 once invoked), scanned A, original, Apache-2.0.

Guidance for building a search harness for coding agents, meaning tools and processes that help agents find and use information. It covers search APIs, search pipelines, command-line tools, skills, and project planning.

In plain words
What is it for?
Use it when designing search infrastructure, comparing search APIs, planning a search pipeline, or reviewing the search-harness project.
Why use it?
It helps structure decisions about how coding agents search instead of treating search as an undefined feature.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the search-harness plugin — 1 skill shipped together

Good fit Use it when designing search infrastructure, comparing search APIs, planning a search pipeline, or reviewing the search-harness project.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sunflowerslwtech/sunkit/search-harness
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 SunflowersLwtech/sunkit --skill search-harness
Clone the repo
git clone --depth 1 https://github.com/SunflowersLwtech/sunkit

Made for: Claude Code.

Or install search-harness, the plugin that ships this one along with the rest of its 1 skill.

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 search-harness

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/sunflowerslwtech/sunkit/search-harness"><img src="https://agentmods.dev/badge/skills/sunflowerslwtech/sunkit/search-harness.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 305 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00060 $0.00305
Opus 5.5 $0.00024 $0.00122
Sonnet 5.5 $0.00012 $0.00061
Haiku 4.5 $0.00006 $0.00030

Measured 2mo ago against content hash 41cb14be6361, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

search-harness 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.

plugins/search-harness/skills/search-harness/SKILL.md · 31 lines

What it actually says

Search Harness — Domain Knowledge Pack

This skill packages the scoping and research documents for a search harness for coding agents (CLI + skills design). No code yet — this is the reference layer for decisions, reviews, and onboarding.

How to use these documents

Read the file that matches the question, in this order of relevance:

Question File
What is this domain? Terms, players, accumulated conclusions domain-knowledge.md
What are we building and in what order? roadmap.md
Which sources/APIs are in scope? sources.md
How do we wrap a ground-truth search API? ground-api-pipeline.md
Why that strategy? ground-api-strategy.md
Raw API documentation for candidate sources api-docs/

Ground rules carried over from the project

  • Domain knowledge is a reference manual: consult it before re-deriving conclusions that are already recorded.
  • The roadmap's top priority is "equip every source" — check roadmap.md before proposing new scope.
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. 2mo ago First seen · 31 lines · 60 tokens per session scan A 41cb14be6361

Subscribe to this mod's changes

search-harness is a skill published in the GitHub repository SunflowersLwtech/sunkit (13 stars, last pushed yesterday), licensed Apache-2.0. It adds 60 tokens to every session and 305 once invoked, about $0.0002 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 2026-08-30.

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