Is io.onesource/mcp safe to use?

io.onesource/mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install io.onesource/mcp?

io.onesource/mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can io.onesource/mcp do?

io.onesource/mcp provides 27 tools: 1s_allowance_live, 1s_contract_info_live, 1s_erc1155_balance_live, 1s_erc20_balance_live, 1s_erc20_transfers_live and 22 more. See the full tools list on the server page for descriptions and parameters.

What AI clients work with io.onesource/mcp?

io.onesource/mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and http transport.

Is io.onesource/mcp actively maintained?

io.onesource/mcp is actively maintained — last commit was 3 days ago.

io.onesource/mcp

@one-source/mcp

31 tools for blockchain data, live chain queries, and API documentation

1.4k/wk 27 tools GitHub npm

No known CVEs

No license

Actively maintained

Last commit 3d ago

Works with most clients

Transport: stdio, http

27 tools · ~1.0k tok

Grade B · 0.5% of 200K ctx

Edit this pageView history

Developer Tools Finance

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "onesource": {
      "args": [
        "-y",
        "@one-source/mcp@latest"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-onesource-mcp)](https://mcppedia.org/s/io-onesource-mcp)

Read me

What io.onesource/mcp does

Unified MCP server for OneSource — 27 tools for blockchain data and live chain queries in a single server.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y '@one-source/mcp' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

87/100across 5 weighted dimensions

How we score →

0255075100

−13

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked @one-source/mcp against OSV.dev.

Inventory

Tools (27)

Click any tool to inspect its schema.

~1.0k tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.onesource/mcp safe to use?: io.onesource/mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install io.onesource/mcp?: io.onesource/mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.onesource/mcp do?: io.onesource/mcp provides 27 tools: 1s_allowance_live, 1s_contract_info_live, 1s_erc1155_balance_live, 1s_erc20_balance_live, 1s_erc20_transfers_live and 22 more. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.onesource/mcp?: io.onesource/mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and http transport.
Is io.onesource/mcp actively maintained?: io.onesource/mcp is actively maintained — last commit was 3 days ago.

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Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

Developer Tools Finance

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "onesource": {
      "args": [
        "-y",
        "@one-source/mcp@latest"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-onesource-mcp)](https://mcppedia.org/s/io-onesource-mcp)

Read me

What io.onesource/mcp does

Unified MCP server for OneSource — 27 tools for blockchain data and live chain queries in a single server.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y '@one-source/mcp' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

@one-source/mcp

Unified MCP server for OneSource — 30 tools for blockchain data and live chain queries in a single server.

What is MCP? The Model Context Protocol lets AI assistants call tools and access data sources. This server exposes both the OneSource blockchain API and its documentation as tools.

Quick Start

Claude Code

claude mcp add onesource -- npx -y @one-source/mcp@latest

Claude Desktop / Cursor

Add to your MCP config:

{
  "mcpServers": {
    "onesource": {
      "command": "npx",
      "args": ["-y", "@one-source/mcp@latest"]
    }
  }
}

Any MCP Client (stdio)

npx -y @one-source/mcp@latest

HTTP Server (self-hosted)

npx -y @one-source/mcp@latest --http
npx -y @one-source/mcp@latest --http --port=8080

Then connect your MCP client to http://localhost:8080/.

Health check: GET http://localhost:8080/health

Tools (30)

Blockchain API — Live Chain (12 tools)

Tool	Description
`1s_allowance_live`	ERC20 allowance check
`1s_contract_info_live`	Contract type detection via ERC165
`1s_erc1155_balance_live`	ERC1155 balance via RPC
`1s_erc20_balance_live`	ERC20 balance via balanceOf
`1s_erc20_transfers_live`	ERC20 Transfer logs via eth_getLogs
`1s_erc721_tokens_live`	ERC721 token enumeration
`1s_events_live`	Event logs via eth_getLogs
`1s_multi_balance_live`	ETH + multiple ERC20 balances
`1s_nft_metadata_live`	NFT metadata via tokenURI
`1s_nft_owner_live`	NFT owner via ownerOf
`1s_total_supply_live`	Token total supply
`1s_tx_details_live`	Transaction + receipt via RPC

Blockchain API — Chain Utilities (13 tools)

RPC only.

Tool	Description
`1s_block_by_number`	Block details by number via RPC
`1s_block_number`	Latest block number
`1s_chain_id`	EIP-155 chain ID
`1s_contract_code`	Contract bytecode
`1s_ens_resolve`	ENS name/address resolution
`1s_estimate_gas`	Gas estimation
`1s_network_info`	Chain ID, block number, gas price
`1s_nonce`	Transaction count
`1s_pending_block`	Pending block from mempool
`1s_proxy_detect`	Proxy contract detection
`1s_simulate_call`	Simulate eth_call
`1s_storage_read`	Read storage slot
`1s_tx_receipt`	Transaction receipt

Payments (2 tools)

Tool	Description
`1s_payment_mode`	View or switch the payment rail + scheme across all four modes: `x402-exact` / `x402-batch` (USDC on Base) and `mpp-charge` / `mpp-session` (USDC.e / pathUSD on Tempo). `batch` and `session` open a channel that funds many calls.
`1s_refund`	Reclaim an open payment channel's unspent deposit on demand — works for both an x402 `batch` channel (Base) and an MPP `session` voucher channel (Tempo)

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

87/100across 5 weighted dimensions

How we score →

0255075100

−13

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked @one-source/mcp against OSV.dev.

Inventory

Tools (27)

Click any tool to inspect its schema.

~1.0k tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.onesource/mcp safe to use?: io.onesource/mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install io.onesource/mcp?: io.onesource/mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.onesource/mcp do?: io.onesource/mcp provides 27 tools: 1s_allowance_live, 1s_contract_info_live, 1s_erc1155_balance_live, 1s_erc20_balance_live, 1s_erc20_transfers_live and 22 more. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.onesource/mcp?: io.onesource/mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and http transport.
Is io.onesource/mcp actively maintained?: io.onesource/mcp is actively maintained — last commit was 3 days ago.