Hashnet

io.github.hashgraph-onlinePublished by GitHub account hashgraph-onlinev1.0.24Updated Oct 25, 2026

Universal AI Agent Discovery - search 59,000+ agents across MCP, NANDA, A2A, OpenRouter

VerifiedSTDIODesktop onlyKnowledge & Memory AI & ML

Server details

Identifier: io.github.hashgraph-online/hashnet
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Sep 16, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified the GitHub account hashgraph-online for this listing. That does not show the account is the product's maker.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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Overview

AI-generated overview

A local MCP server for discovering AI agents across registries, chatting with them, registering agents, and running discovery or delegation workflows.

What you can do: Search and inspect agents across MCP, NANDA, A2A and OpenRouter, including vector search, stats, capabilities and UAID resolution via the hol discovery tools and the discovery workflow. Start, send to, retry, read history from, resume and end chat sessions with agents. Get registration quotes, register agents and wait for registration to complete, or run the registration workflow. Run a delegation workflow that combines discovery and agent interaction.
When to use it: Useful when you want an assistant to find suitable agents or services across several agent registries, talk to them, or register and delegate work to agents through the HOL Registry Broker ecosystem.
Requirements: Runs locally as an npm package (Node.js) over stdio, or over HTTP on 127.0.0.1:3333 by default. Network access to the Registry Broker API is needed; the API URL defaults to hol.org and can be overridden. An optional REGISTRY_BROKER_API_KEY enables paid tools.

Before you install

The optional REGISTRY_BROKER_API_KEY enables paid tools, so usage may incur charges. Optional settings accept wallet credentials, including HEDERA_PRIVATE_KEY and ETH_PK; only supply these if you understand the risk. Chat and registration tools send data to the remote Registry Broker service. Binding to a non-local host requires MCP_SERVER_BEARER_TOKEN.

Installation

In SourceWeft

Open Hashnet in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

Hashnet MCP JS

[npm version] [npm downloads] [Node version] [Bundle size] [Publish] [Canary] [License] [CodeSandbox]

Universal MCP server for discovery, chat, registration, credits, and workflow automation across the HOL Registry Broker ecosystem.

Ecosystem

Quickstart

Common launch modes:

pnpm dev:stdio
pnpm dev:http
pnpm dev:http:compat
npx @hol-org/hashnet-mcp --help
npx @hol-org/hashnet-mcp --stdio
npx @hol-org/hashnet-mcp --http --host 127.0.0.1 --port 3333

When installed globally or linked locally, the binary is hashnet-mcp.

Supported Transports

Transport	Endpoint(s)	Notes
stdio	process stdin/stdout	best for local agent runtimes
Streamable HTTP	`/mcp`, `/mcp/stream`	recommended HTTP transport
legacy HTTP + SSE	`/mcp/sse`, `/mcp/messages`	enabled with `FEATURE_LEGACY_SSE=1`

Runtime utility endpoints:

/healthz
/readyz
/metrics

Tool Surface

Discovery: hol.stats, hol.capabilities, hol.search, hol.vectorSearch, hol.resolveUaid
Chat: hol.chat.readiness, hol.chat.createSession, hol.chat.sendMessage, hol.chat.retry, hol.chat.history, hol.chat.resume, hol.chat.end
Registration: hol.getRegistrationQuote, hol.registerAgent, hol.waitForRegistrationCompletion
Workflows: workflow.discovery, workflow.delegate, workflow.registration

Tool success responses use structured envelopes in structuredContent:

ok
data
meta

Tool failures return isError: true with structured machine-readable error fields (code, category, retryable).

Configuration

Variable	Required	Notes
`REGISTRY_BROKER_API_URL`	no	defaults to `https://hol.org/registry/api/v1`
`REGISTRY_BROKER_API_KEY`	no	enables paid tools with a static broker API key
`BROKER_REQUEST_TIMEOUT_MS`	no	default upstream request timeout is `60000`
`MCP_TRANSPORT`	no	`http` (default) or `stdio`
`MCP_HOST`	no	defaults to `127.0.0.1`
`MCP_PORT`	no	defaults to `3333`
`MCP_ALLOWED_ORIGINS`	no	comma-separated allow list
`MCP_SERVER_BEARER_TOKEN`	no	required when binding to a non-local host (for example `0.0.0.0`)
`MCP_SESSION_IDLE_TTL_MS`	no	defaults to `900000`
`MCP_SESSION_MAX_COUNT`	no	defaults to `250`
`MCP_SESSION_REAP_INTERVAL_MS`	no	defaults to `60000`
`LEDGER_ACCOUNT_ID`	no	generic ledger identity fallback
`HEDERA_ACCOUNT_ID`	no	Hedera account id
`HEDERA_NETWORK`	no	e.g. `hedera:testnet`
`HEDERA_PRIVATE_KEY`	no	Hedera private key
`EVM_LEDGER_NETWORK`	no	e.g. `eip155:1`
`ETH_PK`	no	EVM private key

Security Defaults

Binds to 127.0.0.1 by default.
Validates Origin for HTTP requests when present.
Enforces bearer-token auth when binding to non-local hosts.
Reaps idle HTTP sessions and enforces max active sessions.
Redacts sensitive values in logs.

Development

Command	Purpose
`pnpm build`	compile distributable artifacts
`pnpm start`	run compiled server
`pnpm lint`	run ESLint
`pnpm typecheck`	run TypeScript checks
`pnpm test:run`	run Vitest once
`pnpm test:coverage`	run Vitest with coverage
`pnpm check:no-stubs`	enforce no-stubs contract
`pnpm smoke:http`	streamable HTTP smoke test
`pnpm smoke:stdio`	stdio smoke test

Release Notes Automation

GitHub releases are generated automatically from merged pull requests:

release tags are created during publish (vX.Y.Z)
GitHub release notes are generated with GitHub's release-note engine
changelog categories are controlled via .github/release.yml
canonical docs links are appended to each release

Source: README.md at commit a7d4ac1

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v1.0.24LatestSep 16, 2026

Score

40% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 days25 pts
Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.
Auth declared10 pts
Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.
Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
License10 pts
Declare a license in the repository or the registry entry.

Surface	Link
npm package	`@hol-org/hashnet-mcp`
GitHub repo	hashgraph-online/hashnet-mcp-js
GitHub releases	Releases
Documentation	hol.org/mcp
CodeSandbox	Open examples in browser