cocosearch-new-feature

cocosearch-new-feature is a skill for Claude Code, Codex from VioletCranberry/coco-search. It costs 38 tokens per session (2,560 once invoked), scanned A, original, MIT.

A guided workflow for adding new commands, endpoints, modules, handlers, or other functionality to an existing codebase. It uses CocoSearch to find similar code and the right places to connect the change.

In plain words
What is it for?
Use it when extending a project and you want to inspect existing patterns before implementing and connecting the new functionality.
Why use it?
It reduces the risk of placing new code incorrectly or overlooking existing project conventions and integration points.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Part of the cocosearch plugin — 12 skills shipped together

Good fit Use it when extending a project and you want to inspect existing patterns before implementing and connecting the new functionality.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/violetcranberry/coco-search/cocosearch-new-feature
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 VioletCranberry/coco-search --skill cocosearch-new-feature
Clone the repo
git clone --depth 1 https://github.com/VioletCranberry/coco-search

Made for: Claude Code, Codex.

Or install cocosearch, the plugin that ships this one along with the rest of its 12 skills.

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 cocosearch-new-feature

README.md
[![agentmods](https://agentmods.dev/badge/skills/violetcranberry/coco-search/cocosearch-new-feature/github.svg)](https://agentmods.dev/skills/violetcranberry/coco-search/cocosearch-new-feature)
Your own site
<a href="https://agentmods.dev/skills/violetcranberry/coco-search/cocosearch-new-feature"><img src="https://agentmods.dev/badge/skills/violetcranberry/coco-search/cocosearch-new-feature/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 cocosearch-new-feature

Your own site · 80×15
<a href="https://agentmods.dev/skills/violetcranberry/coco-search/cocosearch-new-feature"><img src="https://agentmods.dev/badge/skills/violetcranberry/coco-search/cocosearch-new-feature.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,560 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00038 $0.02560
Opus 5 $0.00019 $0.01280
Sonnet 5 $0.00008 $0.00512
Haiku 4.5 $0.00004 $0.00256

Measured 11d ago against content hash 6d40240573ed, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

cocosearch-new-feature 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 11d 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.

skills/cocosearch-new-feature/SKILL.md · 348 lines

How it starts

The opening of the file, as written. The whole thing — 348 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Add New Features with CocoSearch

A systematic workflow for adding new code to an existing codebase. This skill uses semantic search to find existing patterns, conventions, and integration points so the new feature fits naturally into the project architecture.

Philosophy: New code should look like it was always there. Search the codebase for existing patterns before writing anything.

Pre-flight Check

  1. Resolve index name (use the resolved name for all operations):
    • Try cocosearch.yaml for indexName field -- if found, use it
    • If no config file, call list_indexes() and match the current project's directory name against available indexes. The MCP tools auto-derive index names from directory paths (e.g., my-project/ -> my_project), so a match is likely if the repo was indexed without a config file.
    • If no match found, the project is genuinely not indexed -- offer to index it. Do NOT abandon CocoSearch tools just because cocosearch.yaml is missing.
  2. list_indexes() to confirm project is indexed
  3. index_stats(index_name="<resolved-name>") to check freshness
  • Stale (>7 days) → warn: "Index is X days old -- I may miss recent patterns. Want me to reindex first?"
  1. Linked index health (if cocosearch.yaml has linkedIndexes):
    • Check the warnings array from index_stats() for entries starting with "Linked index"
    • If stale/missing: warn user — "Linked index 'X' is stale/missing. Cross-project results may be incomplete. Want me to reindex?"

Step 1: Understand the Feature

Parse the user's request to identify what needs to be built and where it fits.

Extract from the request:

  • What: The new capability (e.g., "a CLI command to export stats as CSV")
  • Where: The subsystem it belongs to (e.g., CLI layer, API layer, indexer, search)
  • Interface: How users/code will interact with it (e.g., CLI flag, function call, MCP tool, API endpoint)

Classify the feature type:

  • New command/endpoint: Adds a new entry point (CLI subcommand, MCP tool, API route)
  • New module: Adds a new subsystem or service (e.g., new handler, new search strategy)
  • Extension: Adds capability to an existing module (e.g., new flag, new option, new format)
  • Cross-cutting: Touches multiple subsystems (e.g., new data field flowing from indexer to search to output)

Read the full file on GitHub · 348 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. 11d ago First seen · 348 lines · 38 tokens per session scan A 6d40240573ed

Subscribe to this mod's changes

cocosearch-new-feature is a skill published in the GitHub repository VioletCranberry/coco-search (37 stars, last pushed today), licensed MIT. It adds 38 tokens to every session and 2,560 once invoked, about $0.0002 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 2026-08-30.