file

A command for reading a file from the server-side checkout of an external CIX project, usually backed by GitHub. CIX is a tool for locating and inspecting files in projects available to the command system.

In plain words
What is it for?
Use it to open a known file from an external repository, optionally selecting specific lines after finding the repository and path.
Why use it?
It lets you inspect source from an external project when that project is not stored on your computer. It also distinguishes external projects from the current local project, which should be read directly.

Command

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.

agentmods
npx agentmods add commands/dvcdsys/code-index/file
Clone the repo
git clone --depth 1 https://github.com/dvcdsys/code-index
Per session 19 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 245 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00019 $0.00245
Opus 5 $0.00010 $0.00122
Sonnet 5 $0.00004 $0.00049
Haiku 4.5 $0.00002 $0.00024

Measured yesterday against content hash 62fa96999b59, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

file 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 yesterday.

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/cix/commands/file.md · 24 lines

What it actually says

Read a file from the server-side checkout of an external (GitHub-backed) cix project: $ARGUMENTS

cix file $ARGUMENTS

This works only for external / workspace repos the server keeps on disk — the way to read source from a repo you don't have locally. For the current / local project, use the native Read tool instead (the file is already on your machine; this command will return an error pointing you there).

Tips:

  • Target the repo with -n github.com/owner/repo@main (from cix list).
  • --lines N:M selects a 1-based inclusive range (N, N:, :M also work).
  • To find the path first, use /cix:search or cix files <pattern>; to browse the tree, use /cix:tree.
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. yesterday First seen · 24 lines · 19 tokens per session scan A 62fa96999b59

Subscribe to this mod's changes

file is a command published in the GitHub repository dvcdsys/code-index (29 stars, last pushed 4d ago), licensed MIT. It adds 19 tokens to every session and 245 once invoked, about $0.0001 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.