Summarize is a command-line tool and browser extension that extracts readable content and summarizes web pages, files, YouTube videos, podcasts, and other audio or video. It is for people who need concise information from mixed media sources or want structured output for automation.
Borrowing it
Nothing to install: this file belongs to steipete/summarize. 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/steipete/summarize/main/AGENTS.mdgit clone --depth 1 https://github.com/steipete/summarizeWrote 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/steipete/summarize/agents-md)<a href="https://agentmods.dev/instructions/steipete/summarize/agents-md"><img src="https://agentmods.dev/badge/instructions/steipete/summarize/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/steipete/summarize/agents-md"><img src="https://agentmods.dev/badge/instructions/steipete/summarize/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 | $0.00550 | $0.00550 |
| Opus 5.5 | $0.00220 | $0.00220 |
| Sonnet 5.5 | $0.00110 | $0.00110 |
| Haiku 4.5 | $0.00055 | $0.00055 |
Grade A, and why
summarize 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.
How it starts
The opening of the file, as written. The whole thing — 29 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Summarize Guardrails
- Hard rule: single source of truth =
~/Projects/summarize; never commit invendor/summarize(treat it as a read-only checkout). - Note: multiple agents often work in this folder. If you see files/changes you do not recognize, ignore them and list them at the end.
Workspace layout (note)
- Monorepo (pnpm workspace).
- Packages:
@steipete/summarize= CLI + UX (TTY/progress/streaming). Depends on core.@steipete/summarize-core(packages/core) = library surface for programmatic use (Sweetistics etc). No CLI entrypoints.
- Versioning: lockstep versions; publish order: core first, then CLI (
scripts/release.sh/RELEASING.md). - Homebrew/core formula is not owned here; BrewTestBot autobumps releases about every 3h. Do not block or manually manage it; ship and continue.
- Chrome Web Store: every release must upload the matching
dist-chrome/summarize-chrome-extension-v<version>.zipto itemcejgnmmhbbpdmjnfppjdfkocebngehfg, submit it for review with automatic publishing, and verify the exact pending/published version. Skip only when every shipped change is daemon-side and the packaged extension/companion contract is unchanged. - Dev:
- Build:
pnpm run build(builds core first; also runs during install viaprepare) - Gate:
pnpm run check - Import from apps: prefer
@steipete/summarize-coreto avoid pulling CLI-only deps.
- Build:
- Dependencies: stable releases need a 7-day stabilization delay before adoption; prereleases remain excluded unless already adopted.
- Daemon: restart with
pnpm summarize daemon restart; verify viapnpm summarize daemon status. - Rebuild (extension + daemon): run both in order:
pnpm -C apps/chrome-extension buildpnpm summarize daemon restart
- Extension tests:
pnpm -C apps/chrome-extension test:chrome= supported automated path.- Firefox Playwright extension tests are not reliable (
moz-extension://limitation); defaulttest:firefoxruns a temporary-install smoke test. - Use
pnpm -C apps/chrome-extension test:firefox:forceonly for explicit diagnostics.
- Commits: use
committer "type: message" <files...>(Conventional Commits).
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.
- 1mo ago Changed · +7 tokens per session 232b43de47d1
- 2mo ago First seen · 29 lines · 543 tokens per session scan A e112a743af82
summarize AGENTS.md is an instructions file published in the GitHub repository steipete/summarize (6,785 stars, last pushed yesterday), licensed MIT. It adds 550 tokens to every session, about $0.0022 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.
summarize AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| summarize AGENTS.mdsteipete/summarize | Instructions file | 6.8k | yesterday | MIT | A | 550 | Codex, OpenCode |
| 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 |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |