mcp-registry/io.github.nansen-ai/nansen-mcp · v3.2.4
Also listed as mcp-registry/io.github.hurcannansen/nansen-mcp · primary listing: mcp-registry/io.github.hurcannansen/nansen-mcp
As of 2026-10-20 02:05 UTC, the Nansen Ai Nansen MCP server is up with a Glimind reliability score of 93/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks. It had 5 outages in 90 days, with a median recovery of 5 minutes.
Blockchain analytics API for AI agents. Smart Money signals, wallet profiling, token analytics.
Claude Code
claude mcp add --transport http nansen-ai-nansen-mcp-server https://mcp.nansen.ai/ra/mcp/
Claude Desktop · Windsurf · Cline (mcpServers JSON)
{
"mcpServers": {
"nansen-ai-nansen-mcp-server": {
"type": "http",
"url": "https://mcp.nansen.ai/ra/mcp/"
}
}
}
Third-party server, listed as discovered. Review its source before installing.
4 tool definition(s) exceed ~1,200 tokens each (largest: token_discovery_screener, ~3,842).
Move long reference material out of descriptions (link a doc or expose a resource), drop repeated examples, and collapse large enums. Trimming these to ~600 tokens saves ~8,343 tokens every session. How to fix →
53 tools on one server. Tool-selection accuracy drops as the menu grows, and some clients (e.g. Cursor) cap the number of active tools.
Group tools by task into smaller servers or toolsets, and merge near-duplicates behind one tool with a mode parameter. How to fix →
41 parameter(s) across 40 tool(s) have no description.
Add a "description" to each parameter with its format and an example ("ISO 8601 date, e.g. 2026-10-17"). This is the commonest cause of wrong arguments on the first call. How to fix →
Loading this server's tool list costs an agent ~36,281 tokens before any work — more than 99% of MCP servers.
Split rarely-used tools into a separate server or a toolset the client can enable, or expose one "search tools" entry point. Many agents load every connected server's tools into every request. How to fix →
In the last 30 days: 0 tool(s) removed and 27 schema change(s).
Add new tools or optional parameters instead of renaming or removing; deprecate first (say so in the description) and remove later. Agents cache tool contracts. How to fix →
Get an email or webhook when this server's readiness drops by 10+ points, tool-poisoning text appears, or a tool breaks:
curl -X POST https://glimind.com/v1/subscriptions -H 'content-type: application/json' -d '{"tools":["mcp-registry/io.github.nansen-ai/nansen-mcp"],"email":"[email protected]"}'Agents: watch_tool({"toolId": "mcp-registry/io.github.nansen-ai/nansen-mcp"}) over MCP.
token_discovery_screener ~3,842 tokenstoken_pnl_leaderboard ~3,614 tokensaddress_counterparties_batch ~1,925 tokenstoken_current_top_holders ~1,362 tokenssmart_traders_and_funds_historical_token_balances ~1,050 tokensStatic checks of the advertised tools/list (schema, descriptions, annotations, tool-poisoning patterns, names, size) plus observed protocol, uptime, latency and contract changes. Read-only: no tool is ever called. Weights: schema 15, docs 20, safety 15, efficiency 15, compatibility 15, protocol 5, reliability 10, stability 5. Token counts are estimates (~3.6 characters per token).
Operator? Fix these, then re-check live. Embed the readiness badge:
[](https://glimind.com/server/mcp-registry%2Fio.github.nansen-ai%2Fnansen-mcp?ref=badge)
<a href="https://glimind.com/server/mcp-registry%2Fio.github.nansen-ai%2Fnansen-mcp?ref=badge"><img src="https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.github.nansen-ai%2Fnansen-mcp.svg" alt="MCP agent-readiness"></a>
.. image:: https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.github.nansen-ai%2Fnansen-mcp.svg :target: https://glimind.com/server/mcp-registry%2Fio.github.nansen-ai%2Fnansen-mcp?ref=badge :alt: MCP agent-readiness
Glimind records every version of this server's tool definitions in a signed, append-only transparency log. Current manifest sha256:f5a7a15612228b20…, first seen 2026-10-19, included at leaf 28833 of 30,087. Version history · verify what your client received.
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Glimind tells agents whether a server is up right now and how to call it, then fails over to a live alternative when it isn't.
Claude Code
claude mcp add --transport http glimind https://glimind.com/mcp
Claude Desktop · Windsurf · Cline (mcpServers JSON)
{
"mcpServers": {
"glimind": {
"type": "http",
"url": "https://glimind.com/mcp"
}
}
}
As of 2026-10-20 02:05 UTC, the Nansen Ai Nansen MCP server is up with a Glimind reliability score of 93/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks. It had 5 outages in 90 days, with a median recovery of 5 minutes.
Nansen Ai Nansen MCP server advertises 53 tools, including address_counterparties, address_counterparties_batch, address_dex_trades, address_first_funder, address_historical_balances.
Point your MCP client at this streamable-http endpoint: https://mcp.nansen.ai/ra/mcp/
Glimind scanned all 53 tool definitions for tool-poisoning patterns — hidden or invisible characters, instructions that override the model, concealment from the user, requests to read credential or MCP config files, conversation exfiltration and cross-tool shadowing — and found none. This checks what the server tells the model, not what its code does; review the source before granting access to sensitive data.
Status page: 90-day uptime, every outage and how long it lasted.
Claim this listing to get the Verified operator marker, a remediation checklist and owner analytics, or embed the live badge from any of the tool pages above. Maintainers: alerts, deploy attestation and monthly reports.
Status is an automated estimate from Glimind's liveness checks (handshake and tool listing only; no tool is ever called) and may lag or differ from your network. Glimind is not affiliated with this server or its operator. Operator? Request a correction or opt out at https://glimind.com/opt-out.