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.
npx agentmods add skills/douglasmonsky/codex-usage-tracker/gitnexus-guidenpx skills add douglasmonsky/codex-usage-tracker --skill gitnexus-guidegit clone --depth 1 https://github.com/douglasmonsky/codex-usage-trackerWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00056 | $0.02544 |
| Opus 5 | $0.00028 | $0.01272 |
| Sonnet 5 | $0.00011 | $0.00509 |
| Haiku 4.5 | $0.00006 | $0.00254 |
Grade A, and why
gitnexus-guide 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.
This is a copy
97% identical to gitnexus-guide — 70 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GitNexus Guide
Quick reference for all GitNexus MCP tools, resources, and the knowledge graph schema.
Always Start Here
For any task involving code understanding, debugging, impact analysis, or refactoring:
- Read
gitnexus://repo/{name}/context— codebase overview + check index freshness - Match your task to a skill below and read that skill file
- Follow the skill's workflow and checklist
If step 1 warns the index is stale, run
gitnexus analyze --index-only .in the terminal first.
Skills
| Task | Skill to read |
|---|---|
| Understand architecture / "How does X work?" | gitnexus-exploring |
| Blast radius / "What breaks if I change X?" | gitnexus-impact-analysis |
| Trace bugs / "Why is X failing?" | gitnexus-debugging |
| Rename / extract / split / refactor | gitnexus-refactoring |
| Tools, resources, schema reference | gitnexus-guide (this file) |
| Index, status, clean, wiki CLI commands | gitnexus-cli |
Tools Reference
| Tool | What it gives you |
|---|---|
query |
Process-grouped code intelligence — execution flows related to a concept |
context |
360-degree symbol view — categorized refs, processes it participates in |
impact |
Symbol blast radius — what breaks at depth 1/2/3 with confidence |
trace |
Shortest path between two symbols — "how does A reach B?" in one call |
detect_changes |
Git-diff impact — what do your current changes affect |
rename |
Multi-file coordinated rename with confidence-tagged edits |
cypher |
Raw graph queries (read gitnexus://repo/{name}/schema first) |
explain |
Persisted taint findings — source→sink data flows (needs analyze --pdg) |
pdg_query |
Control/data dependence — what gates X (CDG) / where Y flows (REACHING_DEF); needs analyze --pdg |
check |
Check graph invariants such as circular imports |
route_map |
API route map — which components/hooks fetch which endpoints, and the handler files that serve them |
shape_check |
Response-shape drift — keys each route returns vs keys its consumers access (flags MISMATCH) |
api_impact |
Pre-change report for an API route — consumers, middleware, shape mismatches, risk level |
tool_map |
MCP/RPC tool definitions and the files that handle them |
group_list |
List configured multi-repo groups, or one group's config |
group_sync |
Rebuild a group's Contract Registry (cross-repo HTTP contract links); run after group.yaml changes or member re-index |
list_repos |
Discover indexed repos (paginated — limit/offset) |
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.
- 2d ago First seen · 155 lines · 56 tokens per session scan A ed4ead75bf74
gitnexus-guide is a skill published in the GitHub repository douglasmonsky/codex-usage-tracker (193 stars, last pushed 12d ago), licensed MIT. It adds 56 tokens to every session and 2,544 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to gitnexus-guide, differing in 70 lines, and is treated as a copy.
Other skills, from other repositories
cost-aware-development
先按风险选择最低可胜任能力，再决定需要多少流程和角色。简单任务保持简单；成本优化不得绕过真实风险、安全边界或完成证据。.
disposable-prototype
当实现前可用最小可运行实验回答具体技术或交互未知时使用；产物默认不可发布，且这是轻量叶子能力，不负责任务编排。.
domain-context
当开发任务需要澄清领域术语、业务不变量、CONTEXT.md 或 ADR 约束时使用；这是轻量叶子能力，不负责任务编排。.
module-design
当用户要求改善模块边界、降低耦合、缩小变更面或评估代码结构时使用；这是轻量叶子能力，不负责任务编排。.
codex-plugin-discovery
Use when a user asks what Codex plugins are available or can be used, wants plugin recommendations for a task, asks to find/search/discover installable plugins, asks about the plugin marketplace, or asks whether a plugin can help with a task.
final-release-review
Perform pre-release planning or a final release-candidate review for openai-agents-python by comparing the target with the previous remote tag, determining the minimum compatible release type, auditing regressions and contract changes, reviewing open documentation PR coverage, drafting minor-release Key Changes, and…