@humanisoffline/hio-client

Canonical Human Is Offline agent loop for npm and MCP.

Source repo for the public npm package. The hosted app lives in a separate private monorepo.

Install

npm install @humanisoffline/hio-client

Related MCP server: agent2agent

API

import {
  createHioClient,
  buildAskFirstEnvelopeFromCard,
  HIO_PROTOCOL_VERSION,
} from "@humanisoffline/hio-client";

const hio = createHioClient({ baseUrl: "https://humanisoffline.com" });

const resolved = await hio.resolveCard({
  type: "github",
  identifier: "octocat",
});

const markdown = await hio.fetchCardMarkdown(resolved.cardMarkdown);
const cardJson = await hio.fetchCardJson(resolved.cardJson);

const result = await hio.submitAskFirstNotePlaintext({
  cardJson,
  plaintext: {
    schemaVersion: HIO_PROTOCOL_VERSION,
    type: "inform",
    title: "Need approval",
    summary: "Deploy staging after tests pass.",
    urgency: "normal",
    riskLevel: "medium",
  },
  interpretedBoundary: {
    outcome: "ask_first",
    summary: "Deploy staging",
  },
});

const receipt = await hio.getReceipt(result.receiptUrl);

Lower-level envelope builder

If you already have card fields and the public encryption key:

import { buildAskFirstEnvelope } from "@humanisoffline/hio-client";

const envelope = buildAskFirstEnvelope({
  cardSlug: "example",
  cardUpdatedAt: "2026-07-12T12:00:00.000Z",
  cardSchemaVersion: 3,
  publicEncryptionKey: "…",
  publicKeyId: "pk_…",
  plaintext: { /* see agent-request.v3.json */ schemaVersion: 3, … },
});

await hio.submitAskFirstNote({ cardSlug: "example", envelope });

Encryption uses sealed_box_v1 (NaCl box). Plaintext is never sent to the server.

MCP server

HIO_BASE_URL=https://humanisoffline.com npx @humanisoffline/hio-client hio-mcp

One agent loop via tools:

1. fetch_card_markdown — read authority from /c/{slug}.md

2. fetch_card_json — structured fields and encryption keys

3. submit_ask_first_note — pass cardJsonUrl + plaintext; encrypts and posts one inbox note

4. get_receipt — fetch delegation receipt JSON

Optional: resolve_card when the human shared an alias instead of a card URL.

submit_ask_first_note is the only submit path. It fetches card JSON, builds the sealed envelope, and stops after one POST.

Discovery: read /llms.txt on the configured base URL for routes and schemas.

Development

This repo uses a two-branch release model:

Workflow

1. Branch from develop, make changes, open a PR into develop.

2. CI must pass (ci on Node 20 and 22, gitleaks, audit, build, tests).

3. To release: bump version in package.json on develop, open a PR into main, merge.

4. Tag the merge commit on main: git tag v0.1.3 && git push origin v0.1.3.

The publish.yml workflow builds, tests, verifies the tag matches package.json, and publishes to npm with provenance.

npm run verify

Network access

This package makes outbound HTTPS requests to the configured Human Is Offline base URL (https://humanisoffline.com by default). It does not phone home elsewhere, collect telemetry, or run code at install time.