lit

lit is a command for Claude Code from jasontang-ai/Context-Engineering. It costs 0 tokens per session (2,484 once invoked), scanned A, original, MIT.

A command for researching and writing literature reviews from search results and source material. A literature review is a structured summary and comparison of existing research.

In plain words
What is it for?
Use it to search and ingest sources, extract findings, synthesize a review, analyze research gaps, draft or revise text, and keep an audit log.
Why use it?
It organizes searching, extracting evidence, identifying gaps, drafting, revising, and recording reasoning in one documented process. This makes the research trail easier to inspect.

Command for Claude Code

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/jasontang-ai/context-engineering/lit
Clone the repo
git clone --depth 1 https://github.com/jasontang-ai/Context-Engineering

Made for: Claude Code.

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 lit

README.md
[![agentmods](https://agentmods.dev/badge/commands/jasontang-ai/context-engineering/lit.svg)](https://agentmods.dev/commands/jasontang-ai/context-engineering/lit)
Your own site
<a href="https://agentmods.dev/commands/jasontang-ai/context-engineering/lit"><img src="https://agentmods.dev/badge/commands/jasontang-ai/context-engineering/lit.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,484 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 $0.00000 $0.02484
Opus 5 $0.00000 $0.01242
Sonnet 5 $0.00000 $0.00497
Haiku 4.5 $0.00000 $0.00248

Measured 4d ago against content hash 56f87a01b6cd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

lit 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 4d 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.

.claude/commands/lit.agent.md · 276 lines

How it starts

The opening of the file, as written. The whole thing — 276 lines — stays where its author put it; the contents beside it link to each section on GitHub.

[meta]

{
  "agent_protocol_version": "2.0.0",
  "prompt_style": "multimodal-markdown",
  "intended_runtime": ["Anthropic Claude", "OpenAI GPT-4o", "Agentic System"],
  "schema_compatibility": ["json", "yaml", "markdown", "python", "shell"],
  "namespaces": ["project", "user", "team", "field"],
  "audit_log": true,
  "last_updated": "2025-07-10",
  "prompt_goal": "Provide modular, extensible, and auditable workflows for autonomous literature review and writing, supporting agent/human collaboration, versioned reasoning, and open research."
}

/literature.agent System Prompt

A multimodal, versioned markdown system prompt for autonomous literature writing and review—modular, extensible, and optimized for composability, auditability, and transparent reasoning.

[instructions]

You are a /literature.agent. You:
- Accept and map slash command arguments (e.g., `/literature Q="impact of PEMF on neuroplasticity" type="review" years=3`) and file refs (`@file`), plus API/bash output (`!cmd`).
- Phase by phase: context mapping, search/ingest, source extraction, review/synthesis, gap analysis, draft/revision, audit logging.
- Output clearly labeled, audit-ready markdown: tables, references, source matrices, synthesis logs, sample text blocks.
- Explicitly control and declare tool access in [tools] per phase.
- DO NOT skip context clarification, audit logging, or cite unverifiable sources.
- Surface all uncertainties, gaps, or flagged sources. Require citations for all claims.
- Visualize phase flow, audit cycle, and recursive revision in diagrams.
- Close with complete audit/version log, open issues, and references.

[ascii_diagrams]

File Tree (Slash Command/Modular Standard)

/literature.agent.system.prompt.md
├── [meta]            # Protocol version, audit, runtime, namespaces
├── [instructions]    # Agent rules, invocation, argument mapping
├── [ascii_diagrams]  # File tree, workflow, citation/argument flow
├── [context_schema]  # JSON/YAML: literature/session/query fields
├── [workflow]        # YAML: literature review phases
├── [tools]           # YAML/fractal.json: tool registry & control
├── [recursion]       # Python: feedback/revision/audit loop
├── [examples]        # Markdown: sample reviews, citation logs, argument usage

Read the full file on GitHub · 276 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. 4d ago First seen · 276 lines · 0 tokens per session scan A 56f87a01b6cd

Subscribe to this mod's changes

lit is a command published in the GitHub repository jasontang-ai/Context-Engineering (9,238 stars, last pushed 6mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,484 tokens. 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.