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PopNx MCPAIを使う人のためのMCPサーバー · やさしい言葉で解説

Hythe

作者:hythe-devバージョン 0.2.0i★ –iパソコンで動く
レジストリ名dev.hythe/hythe

インストール

概要

作者による説明(英語の原文)

HYTHE — coordination bus + shared truth for AI agent fleets — self-hosted MCP server + stdio bridge.

PopNx MCPの3つの柱

この3つを1つのスコアにまとめることはしません。意見、測定、人気はそれぞれ別のものだからです。

できること

このサーバーのやさしい解説はまだ書いていません。以下はレジストリから読み取った事実です。

  • 接続方法: パソコンで動く
  • トランスポート: stdio
  • カテゴリ: その他
  • 入力が必要なもの:HYTHE_AGENT_ID, API_KEY

インストール

使っているAIアプリを選んで、設定をコピーしてください。

インストールの前に

  • 基本チェック:1項目中1項目に合格
  • あなたのパソコンで、あなたのユーザーと同じ権限(ファイル、ネットワーク、アプリ)で動きます。
  • 自分で入力するもの: HYTHE_AGENT_ID, HYTHE_AGENT_KEY_FILE, HYTHE_AGENT_AUTH_MODE, API_KEY, MCP_HOST, MCP_PORT

「秘密」と表示された値は、あなたのアカウントの鍵です。絶対に人に教えたり、チャットに貼り付けたりしないでください。

必要なもの

  • npmNode.jsのインストール(npxコマンドに必要)

どのアプリを使っていますか?

上でアプリを選んでください。選んだアプリを覚えておくので、次からはボタンに「…にインストール」と表示されます。

Claude Desktop → Settings → Developer → Edit Config を開き、claude_desktop_config.json にこれを貼り付けます

{
  "mcpServers": {
    "hythe": {
      "command": "npx",
      "args": [
        "-y",
        "@hythe/mcp"
      ],
      "env": {
        "HYTHE_AGENT_ID": "your-value",
        "HYTHE_AGENT_KEY_FILE": "your-value",
        "HYTHE_AGENT_AUTH_MODE": "your-value",
        "API_KEY": "your-value",
        "MCP_HOST": "your-value",
        "MCP_PORT": "your-value"
      }
    }
  }
}

ターミナルでこれを実行します

claude mcp add hythe --env HYTHE_AGENT_ID=your-value --env HYTHE_AGENT_KEY_FILE=your-value --env HYTHE_AGENT_AUTH_MODE=your-value --env API_KEY=your-value --env MCP_HOST=your-value --env MCP_PORT=your-value -- npx -y @hythe/mcp

動かす前に、空欄の値を入力してください。

Cursorで開く

または、設定を自分でコピーする

プロジェクトの .cursor/mcp.json、または ~/.cursor/mcp.json に貼り付けます

{
  "mcpServers": {
    "hythe": {
      "command": "npx",
      "args": [
        "-y",
        "@hythe/mcp"
      ],
      "env": {
        "HYTHE_AGENT_ID": "your-value",
        "HYTHE_AGENT_KEY_FILE": "your-value",
        "HYTHE_AGENT_AUTH_MODE": "your-value",
        "API_KEY": "your-value",
        "MCP_HOST": "your-value",
        "MCP_PORT": "your-value"
      }
    }
  }
}

ブラウザがアプリを開いてよいか確認し、そのあとアプリが設定を表示して確認を求めます。キーの値は空欄のままなので、自分で入力してください。

VS Codeで開く

または、設定を自分でコピーする

プロジェクトの .vscode/mcp.json に貼り付けます

{
  "servers": {
    "hythe": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@hythe/mcp"
      ],
      "env": {
        "HYTHE_AGENT_ID": "your-value",
        "HYTHE_AGENT_KEY_FILE": "your-value",
        "HYTHE_AGENT_AUTH_MODE": "your-value",
        "API_KEY": "your-value",
        "MCP_HOST": "your-value",
        "MCP_PORT": "your-value"
      }
    }
  }
}

ブラウザがアプリを開いてよいか確認し、そのあとアプリが設定を表示して確認を求めます。キーの値は空欄のままなので、自分で入力してください。

これはパソコンで動くサーバーですが、ChatGPTがつなげるのはインターネット上のサーバーだけです。ほかのアプリを選んでください。

選んだアプリは、この端末のCookieに保存されます。アカウントは不要です。

自分で入力する値

  • HYTHE_AGENT_ID 必須 env
    Stable exact agent identity for this client lane; required so restarts and compaction cannot adopt another principal
  • HYTHE_AGENT_KEY_FILE env
    Optional path to one protected per-agent credential file: regular, non-symlink, owned by the client user, mode 0400 or 0600, containing one hya1 token. Never place the token itself in an environment…
  • HYTHE_AGENT_AUTH_MODE env
    Client authorization expectation: observe, mixed, or required (default observe). Move to mixed and then required only after this exact lane has a credential and passes /agent/whoami.
  • API_KEY 秘密 必須 env
    Shared API key authenticating the bridge to your self-hosted HYTHE server (create a protected .env with: npx -y @hythe/mcp@0.2.0 init --write-env --agent-id )
  • MCP_HOST env
    HYTHE server host (default 127.0.0.1)
  • MCP_PORT env
    HYTHE server port (default 6174)

この設定は、作者のレジストリ登録情報から作成しています。READMEと違う場合は、READMEに従ってください。

できること

パソコンで動くサーバーです。インストールすると、ツール一覧がAIアプリに表示されます。

基本チェックi

誰でも見られる情報をチェックしており、コードは読んでいません。当てはまらない項目は数に入れていません。 · 2026年11月6日にチェック

  • ✓ 合格

    作者とリポジトリが一致

    レジストリ名はドメイン hythe.dev で確認済みです(レジストリがドメインの所有を確認しています)

  • … 未チェック

    今もメンテナンスされている

    このリポジトリはまだGitHubから読み取っていません

  • … 未チェック

    ライセンスがある

    このリポジトリはまだGitHubから読み取っていません

  • – 対象外

    エンドポイントが応答する

    これはパソコンで動くため、インターネット上のエンドポイントはありません

  • – 対象外

    OAuthでサインイン

    パソコンで動き、代わりにローカルの設定を使います

  • … 未チェック

    ツールの説明に隠れた指示がない

    パソコンで動くサーバーです。ツール一覧を読み取れるのは、インターネット上のエンドポイントがある場合だけです

その他のほかのサーバーとの比較i

  • このカテゴリのほかの32410件のうち0%よりスターが多い
  • このカテゴリのほかの32410件のうち33%より最近レジストリに公開
  • 基本チェックの結果が、このカテゴリのほかの32410件のうち100%と同じかそれ以上

レジストリでこのカテゴリにある有効なすべてのサーバーと比較しています。スターは、公開者がリポジトリの所有者である場合だけ数えます。

よくある質問

Hytheは安全ですか?

当てはまる基本チェック1項目のうち1項目に合格しました。コードは読んでいません。キーやトークンを追加する前に、サーバーがどんなアクセスを求めているかを確認し、必要な権限だけを持つキーを使ってください。

どんなキーやコードが必要ですか?

入力が必要なもの:HYTHE_AGENT_ID, API_KEY

パソコンで動きますか、それともクラウドですか?

あなたのパソコンで動きます。必要なときにAIアプリが起動し、データは作者のサーバーを通りません(サーバー自体がオンラインサービスを呼び出す場合を除きます)。

今もメンテナンスされていますか?

GitHubリポジトリの最終更新は–、最新バージョン(0.2.0)がレジストリに届いたのは2 か月前です。

どのアプリで使えますか?

Claude Desktop、Claude Code、Cursor、VS CodeなどのMCP対応アプリで使えます。パソコンにNode.jsも必要です。

代わりに使えるものは?

同じカテゴリには:Spec Driven Development, Remote Desktop Commander, debuff

代わりの候補

同じカテゴリで、ほかの作者が作ったサーバー。スターの多い順。

カードの見方:★ GitHubスターi3つの柱:レビュー · チェック · 利用状況i更新=最新バージョンをレジストリに公開した日i

Remote Desktop Commander

作者:desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

クラウドで動く★ 211昨日更新
インストール

debuff

作者:debuffjp

Let coding agents play, test and tune your 2D web game: live state, explained errors, replays, fuzz.

パソコンで動く今日更新
インストール

作者のREADME

READMEを開く

作者のリポジトリから書かれたとおりにコピーしたものです。PopNx MCPは内容を確認・推奨していません。HTML、画像、スクリプトは取り除いています。リンクはこのサイトの外へ移動します。

HYTHE

A coordination bus + shared truth for your agent fleet. Self-hosted, two-component setup: a dockerized server plus a thin stdio bridge for your MCP clients.

HYTHE is an MCP server that lets multiple AI coding agents — Claude Code, Codex, Cursor, custom harnesses — share state, preserve context across sessions, and coordinate with each other. It is not another memory store. Its differentiators:

  • Supersession + current-state resolution: observations supersede each other (replace-current), and get_current_observation resolves the chain server-side — so readers get the newest non-superseded state. Conflict handling is implemented: checkpoint is branch-preserving CAS — concurrent writers branch rather than overwrite, and conflicts surface as heads, never silently resolved (contract-tested; see the evidence ledger).
  • Agent messaging with a tracked delivery lifecycle: direct and capability-based sends, message supersession, read-state as a shared signal, atomic ack+archive. (Described as *tracked lifecycle*, not guaranteed delivery — the states are honest about what the server knows.)
  • The Adaptive Coordination Protocol (ACP): the ETA-driven coordination discipline that co-evolved with the server — published as docs/SPEC.md with a real two-harness worked tutorial.

Documentation

DocWhat it covers
QuickstartClean machine → two coordinating agents in ~15 minutes
ConceptsOne current truth, messaging lifecycle, resume/checkpoint, honest security model
Checkpoint / resume v3Current-head pointer, reconciliation, record / patch, the v3 read model, and the one-time adoption step for scopes written before v3
ACP SPECThe coordination protocol, versioned (1.0.0)
TutorialAnnotated transcript of a real Claude Code ↔ Codex review loop from the original Engram deployment
Tool compatibility mapThe 20-tool v1 surface; every retired tool and its exact replacement
Backup & restoreTested SQLite backup/restore/compaction runbook
Agent credential operatorOffline issuance, attestation, promotion, rotation, and revocation
Private-residue adjudicationHash-bound, owner-approved disposition of ambiguous historical rows
SQLite physical sanitationVerified offline VACUUM and no-clobber promotion after logical cleanup
Pavilion productionPinned deployment, readiness, shutdown, canary, and rollback contract

Status

Version 0.2.0. This source tree and package define the reviewed 0.2.0 release. Version 0.2.0 preserves 0.1.7's dual-proof agent authorization, exact-mailbox/private-payload containment, bounded related-context discovery, latency-SLO recovery and the offline adjudicator, and adds checkpoint / resume resultVersion: 3: an explicit current-head pointer per scope, a reconcile operation that folds live heads into one survivor and resolves divergent values causally, append-only verified fact/loop versions, a read model that only promotes values proven on the accepted lineage, and record / patch operations on the pointed head. Every v1 / v2 request and result shape is frozen; v3 is opt-in per call, so a 0.1.7 client keeps working against a 0.2.0 server. The dependency tree moved to Express 5, clearing two moderate qs advisories. This release runs on the reference production host since 2026-09-05. All 0.2.0 rollout configurations pin @hythe/mcp@0.2.0; verify that the registry returns that exact version before production use. The predecessor @tomcat65/engram-mcp and io.github.tomcat65/engram remain available as compatibility history and are never unpublished. See CHANGELOG.md and the v3 guide.

House rule: every claim in these docs must trace to a test or a measurement (see the evidence ledger below). Claims that don't are bugs.

Evidence ledger

ClaimEvidenceSourceDate
Tree green, full gatesSource and clean installed-package gates cover 49 Vitest files (530 passed, 2 skipped, 6 explicit todos), 107 migration checks, 43 release-tree checks, 31 agent-kit checks, zero production npm audit findings, registry validation, and an isolated Docker start/readiness/MCP/WebSocket/graceful-shutdown canary..github/workflows/ci.yml, tests/, src/migrations/, clients/agent-kit/tests/test-setup.sh, scripts/verify-hythe-release-tree.test.mjs, scripts/verify-packed-consumer.mjs2026-08-14
Compaction identity fails closedStartup and post-compaction hooks reject missing, conflicting, or invalid identity; the bridge binds acting tools and message-resource recipients to the configured exact lane before any HTTP request.clients/agent-kit/tests/test-setup.sh, tests/contract-bridge-identity.test.ts2026-08-13
Exact mailboxes stay isolatedHouston/Hythe, case variants, display metadata, legacy identity history, cross-tenant poisoning, suffix handles, lifecycle changes, supersession, HTTP, and ENG-4 authorship have negative isolation coverage.tests/contract-message-identity-isolation.test.ts, tests/contract-eng4-p0.test.ts2026-08-13
Private message bodies stay out of shared graph surfacesHistorical, oversized, malformed, alias-linked, relation-linked, imported, exported, searched, graphed, logged, and restored payload paths are covered; hidden children do not leak through counts.tests/contract-message-payload-isolation.test.ts, tests/contract-data-payload-isolation.test.ts, tests/contract-log-confidentiality.test.ts2026-08-13
Cleanup is offline and fail-closedMigration 007, owner-approved adjudication, and physical sanitation are dry-run/plan-first, bind execution to reviewed database and decision evidence, require verified no-clobber artifacts, refuse unresolved custody, and preserve rollback state.src/migrations/007-private-message-residue.mjs, src/migrations/private-message-residue-adjudication.mjs, src/migrations/vacuum-sanitized-database.mjs, docs/2026-08-14
Per-agent authority is server-derivedThe base key proves deployment/tenant access; a separate protected-file hya1 credential proves the exact agent. Required mode rejects stripped proof, mismatched identity, insufficient scope, revoked credentials, and stale WebSocket sessions.src/agent-auth/, tests/contract-agent-auth-foundation.test.ts, tests/contract-agent-auth-server.test.ts, tests/contract-agent-key-client.test.ts2026-08-14
Install and discovery surfaces agreeCLI and registry surfaces require an exact lane identity and expose only a protected per-agent key-file path plus an explicit authorization mode; tools and resource templates served through HTTP match the stdio bridge path.tests/contract-cli.test.ts, tests/contract-agent-key-client.test.ts, tests/contract-mcp-resources-http.test.ts, scripts/verify-hythe-release-tree.test.mjs2026-08-14
Current head is explicit, never guessedThe pointer advances only from the pointed head; stale parents branch without becoming current; a pointer at a non-live snapshot fails closed; snapshot rows are immutable by trigger. 33 contract tests.tests/contract-eng4-h1-head-pointer.test.ts2026-09-03
Versions and coverage are exact and verifiedEvery ledger tuple gets exactly one disposition; the startup backfill is all-or-nothing and idempotent; a bidirectional parity verifier fails closed on any missing, extra or mismatched row. 32 contract tests.tests/contract-eng4-h2-version-foundation.test.ts2026-09-03
Reconciliation is CAS-bound and causalExact live-head set and pointer are compare-and-set; every non-survivor head is retired (never deleted); divergent values resolve only by bound accept, reject or lineage reject; the record is payload-bound and re-verified on replay and read. 34 contract tests.tests/contract-eng4-h3-reconcile.test.ts2026-09-04
The v3 read model promotes only proven valuescurrentFacts / openLoops come only from verified versions on the accepted lineage with provenance; everything else is accounted as divergent or legacy with closed coverage. 29 contract tests.tests/contract-eng4-h4-read-model.test.ts2026-09-04
record / patch cannot promote stale stateOnly the pointed head is admitted (conflict otherwise); state is materialized from the hash-verified payload; each payload is read once per call; snapshot resources serve exactly the verified bytes. 21 contract tests, four review rounds.tests/contract-eng4-h5-record-patch.test.ts2026-09-04
Express 5 keeps the HTTP contractA bodiless or wrong-content-type request is handled like an empty JSON body on every parsed route, never a framework 500; production audit reports zero findings.tests/contract-express5-body-contract.test.ts, .github/workflows/ci.yml run 338785870102026-09-04
Production migration verified on a copy firstThe v3 schema and backfill were exercised against a copy of the production database on the production host before cutover; the live cutover took 17 s with row counts identical to the verified cold backup.docs/PAVILION-PRODUCTION.md; operator log engram-prod/releases/hythe-74a324c-cutover-20260905T005551Z.log on the host2026-09-05

v1 surface (short)

  • Install (two-component setup): server via docker compose up, then the @hythe/mcp stdio bridge per MCP client; first-run wizard stores the API key in a protected .env and prints secret-free file-referencing config for Claude Code / Codex / Cursor / Claude Desktop; optional namespaced (demo-*) demo seed on an otherwise empty DB.
  • Knowledge graph: entities, observations, relations, supersession, current-state resolution, conflict surfacing.
  • Related-context discovery: exact scope anchoring plus automatic bounded vector retrieval and graph-path reranking, with currentness/evidence/provenance explanations and no implicit writes.
  • Agent messaging: direct, capability-based, superseding; tracked delivery lifecycle.
  • `resume` / `checkpoint`: budgeted one-call session rehydration with closed coverage accounting, and CAS-protected, branch-preserving structured state capture. With resultVersion: 3: an explicit current-head pointer, reconcile to fold heads and resolve divergent values, verified fact/loop versions with provenance, and record / patch on the pointed head — see the v3 guide.
  • ACP: the coordination protocol as a versioned spec + real worked example.

Embedding runtime contract

The published npm package does not install a transformer engine by default. Without one, HYTHE still provides deterministic 384-dimension token-hash vectors plus lexical ranking; it does not download a model or create a model cache. @xenova/transformers@2.17.2 is an optional peer for operators who deliberately provide it from their own audited dependency root.

The Docker image keeps semantic behavior stable through a separate, locked /opt/hythe-transformers runtime. Its startup preflight loads the configured Xenova/all-MiniLM-L6-v2 q8 model and requires one finite 384-dimension embedding before the server starts. When SQLITE_VEC_ALLOW_REMOTE_MODELS=false, the configured SQLITE_VEC_CACHE_DIR must already contain that model. Do not switch between transformer and hash embeddings on a populated vector index: retain the same provider/model/dimensions or rebuild the vector index first.

License

Apache-2.0

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