agent-insights AGENTS.md

Project instructions for Agent Insights, a Rust service that scans coding-agent session files and prepares activity data for heatmap views.

In plain words
What is it for?
They guide changes to scanners for Claude, Gemini, and Codex data, aggregation services, REST endpoints, and the React-based interface.
Why use it?
They document where session data comes from and how the backend, parsers, API, and interface fit together.

Instructions file for CodexOpenCode

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 instructions/milisp/agent-insights/agents-md
Clone the repo
git clone --depth 1 https://github.com/milisp/agent-insights

Made for: Codex, OpenCode.

Per session 757 This file is loaded in full into every session.
When invoked 757 The same file — it is already loaded in full.
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 $0.00757 $0.00757
Opus 5 $0.00378 $0.00378
Sonnet 5 $0.00151 $0.00151
Haiku 4.5 $0.00076 $0.00076

Measured 2d ago against content hash 1b14f9eb22af, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

agent-insights 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 2d 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 · 102 lines

How it starts

The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Insights Backend

Rust backend API for scanning and aggregating AI agent usage data.

Features

  • Scans local agent directories (Claude, Gemini, Codex)
  • Parses JSON/JSONL session files
  • Aggregates data by date for heatmap visualization
  • RESTful API with CORS support

Architecture

agent-insights/
├── src/
│   ├── domain/          # Domain models
│   │   ├── record.rs    # AgentRecord, TokenInfo
│   │   └── heatmap.rs   # HeatmapData, DayActivity
│   ├── scanner/         # File scanning
│   │   └── mod.rs       # FileScanner with walkdir
│   ├── agents/          # Agent-specific parsers
│   │   ├── claude.rs    # JSONL parser for ~/.claude/projects
│   │   ├── gemini.rs    # JSON parser for ~/.gemini/tmp
│   │   └── codex.rs     # Scanner for ~/.codex
│   ├── services/        # Business logic
│   │   ├── collect.rs   # CollectionService
│   │   └── aggregate.rs # AggregationService
│   ├── api/             # HTTP API
│   │   └── heatmap.rs   # Heatmap endpoints
│   └── main.rs          # Axum server
│   └── ui/              # frontend (react + vite + tailwind + shadcn + bun)

API Endpoints

GET /api/heatmaps

Returns all agent heatmaps

{
  "Claude": {
    "agent": "Claude",
    "data": [
      {"date": "2025-12-02", "count": 20, "size": 5096527},
      {"date": "2025-12-03", "count": 27, "size": 1687467}
    ],
    "max_count": 82,
    "total_files": 666,
    "total_size": 123456789
  },
  "Gemini": {...},
  "Codex": {...}
}

GET /api/heatmap/:agent

Returns heatmap for specific agent (claude, gemini, codex)

{
  "agent": "Claude",
  "data": [...],
  "max_count": 82,
  "total_files": 666,
  "total_size": 123456789
}

Running

cargo run

Server starts on http://127.0.0.1:3001

Implementation Details

Claude Scanner

  • Location: ~/.claude/projects/
  • Format: JSONL (newline-delimited JSON)
  • Extracts: session_id, token usage (input/output/cached)
  • Pattern: One event per line

Gemini Scanner

  • Location: ~/.gemini/tmp/{hash}/chats/
  • Format: JSON
  • Extracts: session_id, token usage
  • Pattern: Multiple chat files per session

Read the full file on GitHub · 102 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. 2d ago First seen · 102 lines · 757 tokens per session scan A 1b14f9eb22af

Subscribe to this mod's changes

agent-insights AGENTS.md is an instructions file published in the GitHub repository milisp/agent-insights (2 stars, last pushed 5mo ago), licensed MIT. It adds 757 tokens to every session, about $0.0038 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.