emet

Zero-setup grounded research for AI coding agents.

Pinned: docs index · tool reference · host setup · 5-minute quickstarts · examples · SECURITY · contributing · changelog · 2.0.0 release notes

emet gives agents live, cited answers from the web, docs, repositories, papers, and selected community/media sources — without adding tool sprawl.

Current shape: public tools stay exactly emet + web_fetch. Community/media retrieval is read-only and explicit. Supported backends today: Hacker News, Reddit, V2EX, GitHub, RSS/Atom, YouTube. Not every social network is supported, and factual/high-risk claims still require authoritative follow-up.

Why emet

Most search tools return links. emet returns research the agent can use directly:

• live sources with citations
• authority-aware ranking for docs, security, versions, and changelogs
• strict host allowlists when you need fail-closed source control
• conflict handling instead of silent averaging
• local repo grounding via options.files
• optional full page text via web_fetch or options.rawPages: true
• explicit community/media retrieval when web docs are not enough

Public tool surface

Tool	Use it for
emet	Live research, docs lookup, comparisons, papers, security checks, community/media retrieval, checkpointed sessions
web_fetch	Raw text for one known URL through emet's fetch/cache pipeline

That is intentional: no emet_search, emet_fetch, or collector-specific public tools.

Community and social/media support

emet is no longer web-only.

Supported read-only community/media backends today:

Backend	What it is good for
hn	Hacker News discussions and launch reactions
reddit	Reddit threads and community sentiment
v2ex	V2EX threads and community chatter
github	repos, issues, and code-search-style context
rss	feed-backed updates and mention tracking
youtube	metadata/transcript-oriented retrieval when available

Use them explicitly with options.platforms, or ask with clear platform wording.

Important guardrail: community/social results are signals, not automatic truth. For CVEs, vendor status, deprecations, outages, medical/legal topics, and other high-risk claims, emet follows up with stronger sources.

Quick start

Pi

pi install npm:@black-knight.dev/emet

MCP / CLI

npm install -g @black-knight.dev/emet
emet doctor
emet

• emet doctor checks the local install.
• plain emet starts the MCP stdio server.
• emet fetch <url> [--json] is the CLI equivalent of web_fetch.
• emet init <host> --print|--write writes known-good host configs.

Host setup

Host	Fastest setup	Config
Claude Code	claude mcp add emet -- emet	configs/claude-code/mcp.json
Codex	emet init codex --write	configs/codex/config.toml
Cursor	emet init cursor --write	configs/cursor/mcp.json
VS Code / Copilot	emet init vscode-copilot --write	configs/vscode-copilot/mcp.json
Gemini CLI	emet init gemini --write	configs/gemini/settings.json
Pi	pi install npm:@black-knight.dev/emet	extension entrypoint shipped in package

More copy-paste setup lives in docs/quickstarts.md.

Example calls

Current docs / API lookup

{
  "query": "current MCP sampling docs",
  "mode": "code",
  "options": {
    "requireAuthoritative": true,
    "hostAllowlist": ["modelcontextprotocol.io", "github.com/modelcontextprotocol"]
  }
}

Community + GitHub research

{
  "query": "What are developers saying about React 19 upgrade pain?",
  "mode": "deep",
  "options": {
    "platforms": ["hn", "github"],
    "interactive": true,
    "maxResultsPerPlatform": 5
  }
}

Full raw page text in the research result

{
  "query": "MCP tool schema docs",
  "mode": "code",
  "options": { "rawPages": true }
}

Raw text for one known URL

Use this first when you already know the page you want. It is faster and more reliable than a deep search round.

{
  "url": "https://modelcontextprotocol.io/docs/develop/build-server"
}

More examples: docs/examples.md

CLI helpers

emet doctor
emet init claude-code --print
emet init cursor --write
emet fetch https://example.com/docs --json

Safety, privacy, and telemetry

• Security reporting lives in SECURITY.md.
• emet is read-only.
• Queries, prompts, URLs, source contents, file paths, tokens, and secrets are not collected by the default telemetry described below.
• Anonymous runtime usage analytics are provided by pinglet.

Opt out anytime:

DO_NOT_TRACK=1 emet
PINGLET_OPT_OUT=1 emet
emet --no-telemetry

Docs

Start here:

• docs/README.md — docs index
• docs/quickstarts.md — host-by-host copy-paste setup
• docs/hosts/README.md — shortest path per supported host
• docs/tool-reference.md — modes, options, and best call patterns
• docs/examples.md — prompt and tool-call gallery
• docs/pipeline.md — maintainer pipeline/module overview
• CHANGELOG.md — release history
• docs/releases/ — pinned release notes

Contributing

See CONTRIBUTING.md.

Local verification gate:

npm run check

License

• MIT
• Third-party notices: THIRD_PARTY_NOTICES.md
• Repo: https://github.com/endgegnerbert-tech/emet