code-context: Instructions file for Codex

AGENTS.md

code-context AGENTS.md is an instructions file for Codex, OpenCode from infino-ai/code-context. It costs 815 tokens per session, scanned A, original, Apache-2.0.

Project instructions for code-context, a local tool that helps AI coding agents search a codebase using keywords and meaning. It builds a searchable index from files in the repository and provides command-line and MCP access.

In plain words
What is it for?
Use it to understand a codebase, search its files, query the local index with SQL, and rebuild that index after code changes.
Why use it?
It helps an agent find relevant code without putting the entire repository into its limited working context, while keeping the search local and read-only.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is infino-ai/code-context's own configuration. It tells Codex and OpenCode how to work on code-context itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything code-context configures →

Reuse

Borrowing it

Nothing to install: this file belongs to infino-ai/code-context. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/infino-ai/code-context/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/infino-ai/code-context

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/infino-ai/code-context/agents-md"><img src="https://agentmods.dev/badge/instructions/infino-ai/code-context/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 815 This file is loaded in full into every session.
When invoked 815 The same file — it is already loaded in full.
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 $0.00815 $0.00815
Opus 5.5 $0.00326 $0.00326
Sonnet 5.5 $0.00163 $0.00163
Haiku 4.5 $0.00081 $0.00081

Measured 1mo ago against content hash c495c3a7c027, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-context AGENTS.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 1mo 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.

AGENTS.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

code-context: notes for AI agents

Read CONTRIBUTING.md first for prerequisites, the build, test commands, and the PR workflow. This file covers what isn't there: what the project is, the repo map, and the boundaries that aren't obvious from the code.

Project overview

code-context is local code search for AI coding agents: a CLI (cx) and an MCP server over a ranked index that lives in plain files inside the repo. It fuses keyword (BM25) and semantic (vector) search into one ranked pass and exposes read-only SQL over the index, so an agent answers questions about a codebase without crawling files into the context window. The index is built and queried in-process with a local embedding model: no accounts, no API keys, no server. It is built on the infino engine, which runs SQL, full-text, and vector search over one copy of the data.

The user-facing surface, quick start, and configuration live in README.md; the measured results in docs/benchmark.md; the honest limits in docs/tradeoffs.md.

Repo map

  • src/cli.ts: the cx / code-context command entry (commander).
  • src/mcp/server.ts: the MCP server, three tools (search, sql, reindex). Each takes an optional path (repo root) so one server serves multiple repos in a session, defaulting to the startup root.
  • src/mcp/repos.ts: the per-repo registry - resolves and validates a requested root, one engine connection per repo, LRU-capped.
  • src/mcp/ensure.ts: auto-index on first query - a search/sql on a never-indexed repo builds the index inline, then answers on the same call (CX_AUTO_INDEX=0 restores the strict "index it first" error).
  • src/core/: the engine-facing core. chunker (tree-sitter chunking), indexer (build + staged readiness + incremental sync), searcher (hybrid search + SQL), embedder (local model), filestate (incremental sync state), walker, manifest, config, context, output.
  • src/commands/: CLI command implementations (index-cmd, query-cmds).
  • test/: vitest suites. bench/: the benchmark harness. docs/: docs.

Read the full file on GitHub · 68 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. 1mo ago First seen · 68 lines · 815 tokens per session scan A c495c3a7c027

Subscribe to this mod's changes

code-context AGENTS.md is an instructions file published in the GitHub repository infino-ai/code-context (31 stars, last pushed 25d ago), licensed Apache-2.0. It adds 815 tokens to every session, about $0.0033 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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