Borrowing it
Nothing to install: this file belongs to sathvikc/lume-js. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/sathvikc/lume-js/main/AGENTS.mdgit clone --depth 1 https://github.com/sathvikc/lume-jsWrote 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.
[](https://agentmods.dev/instructions/sathvikc/lume-js/agents-md)<a href="https://agentmods.dev/instructions/sathvikc/lume-js/agents-md"><img src="https://agentmods.dev/badge/instructions/sathvikc/lume-js/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>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.
<a href="https://agentmods.dev/instructions/sathvikc/lume-js/agents-md"><img src="https://agentmods.dev/badge/instructions/sathvikc/lume-js/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.02020 | $0.02020 |
| Opus 5.5 | $0.00808 | $0.00808 |
| Sonnet 5.5 | $0.00404 | $0.00404 |
| Haiku 4.5 | $0.00202 | $0.00202 |
Grade A, and why
lume-js 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md — How to work on Lume.js
Process contract for AI agents and humans. Follow it for every change. (Most agent tooling, including Claude Code, picks this file up automatically.)
What this library is
Standards-only reactivity: data-* attributes, plain JavaScript, no build step, no custom syntax. The product is trust in a tiny core — 1.49 KB universal kernel (lume-js/state), 2.90 KB with DOM (lume-js), everything else opt-in.
Two documents are the source of truth — read them before designing anything:
docs/design/design-decisions.md— ratified decisions (the contract). If your change contradicts an entry, the entry wins until it is amended.docs/design/VISION.md— direction, roadmap, open problems.
Hard constraints (never violate)
- Standards-only. No custom syntax beyond
data-*attributes. No expressions in attributes (state-key/path references only). No build-step requirement for users. - Explicit over magic. No hidden behavior, no auto-registration.
- No import side effects.
package.jsondeclares"sideEffects": false— module top-levels must be pure (no global mutation, no registration on import). This is what sank the old pluggable-scheduler branch. - Dependency directions.
core/state.jsimports nothing upward (no DOM, no effect, no addons). Addons import core only. No addon → addon imports. Handlers import nothing (orutils/log.js). - Browser floor: Chrome 80+, Firefox 74+, Safari 13.1+, Edge 80+ (ES2020: the source already uses
?.and??, shipped un-transpiled). Nothing newer than ES2020 insrc/— noObject.hasOwn,.at(),??=/||=/&&=,structuredClone,replaceAll. Check MDN before using any API newer than 2020, and update the README support table if the floor ever moves. - Source is plain JS + handwritten
.d.ts. When you change a public signature, update the matching.d.tsin the same commit. - Never bump the package version unless explicitly asked.
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.
- 8d ago Changed · +1 lines · +21 tokens per session dee3e5392693
- 9d ago Changed · +4 lines · +58 tokens per session 1b397707a314
- 2mo ago First seen · 93 lines · 1,941 tokens per session scan A 658cd047216a
lume-js AGENTS.md is an instructions file published in the GitHub repository sathvikc/lume-js (45 stars, last pushed 9d ago), licensed MIT. It adds 2,020 tokens to every session, about $0.0081 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.
lume-js AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| lume-js AGENTS.mdsathvikc/lume-js | Instructions file | 45 | 9d ago | MIT | A | 2,020 | Codex, OpenCode |
| create-trimble-app typescript.instructions.mdjulianoczkowski/create-trimble-app | Instructions file | 3 | 4mo ago | MIT | A | 583 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |