All clients

Connect Claude to Alphaday

Claude Code takes a one-line command. Claude Desktop is different: its JSON config is documented for local stdio servers only, so a remote server goes through the Connectors UI instead.

No API key No signup Remote HTTP, no local process

What you're connecting to

One endpoint exposing 22 data capabilities across 57 pre-described tools — news, governance, DeFi, security and market data. It is a remote server, so there is no package to install, no process to keep alive and no key to obtain. That matters for Claude setup specifically: almost every MCP example online is command + args spawning a local binary, and none of it applies here.

https://api.alphaday.com/mcp

Before you start

The config below assumes all of this is already true. Most failed setups are one of these rather than a wrong field.

  • For Claude Code: the claude CLI on your PATH, and a terminal open anywhere — servers added without --scope project are available in every directory.
  • For Claude Desktop: a Connectors section under Settings → Customize. Custom connectors are plan-gated, so if that section is missing, the plan is the reason rather than the config.
  • Nothing for the server itself. Alphaday is remote: no package, no local process, no key to obtain.

Set it up

Claude has more than one route in, and they are genuinely different rather than alternatives to the same thing. Use the one that matches the surface you work in.

Claude Code

Terminal
claude mcp add --transport http alphaday https://api.alphaday.com/mcp

Claude Desktop

Settings UI
  1. 1Settings → Customize → Connectors
  2. 2Add custom connector
  3. 3Enter the URL: https://api.alphaday.com/mcp
  4. 4Leave the authentication fields blank — the server needs none
  5. 5Quit Claude Desktop completely and reopen it

Check it worked

Confirm the connection before you go looking for a bug in your prompt. A server that is listed but not connected looks identical to a model that chose not to call it.

In Claude

Terminal
claude mcp list

alphaday listed with a connected status. Inside a session, /mcp shows the same thing plus the tool count. In Desktop, the connector appears in the composer's tool menu once the app has been fully restarted.

Or test the endpoint directly

This is the first message of the MCP protocol, sent by hand. If it answers, the server is reachable from your machine and every remaining problem is on the Claude side.

curl -s -X POST https://api.alphaday.com/mcp \
-H 'Content-Type: application/json' \
-H 'Accept: application/json, text/event-stream' \
-d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{
"protocolVersion":"2025-06-18","capabilities":{},
"clientInfo":{"name":"curl","version":"1"}}}'

Expected response

{"jsonrpc":"2.0","id":1,"result":{ "protocolVersion":"2025-06-18", "capabilities":{"tools":{"listChanged":false}, ...}, "serverInfo":{"name":"alphaday","version":"1.30.0"} }}

The version number moves; "name":"alphaday" is the part to look for. The response also carries an mcp-session-id header, which is what a client reuses for every later call.

Try it

Ask these in any Claude Code session, or a new Desktop chat. Each one needs data the model cannot have — a live feed, an incident record, a yield table — so a good answer is proof the tools fired, not just that the server is listed.

  • What's trending in crypto news right now, and what changed in the last 24 hours?
  • Which DeFi pools are paying over 20% APY, and which of them carry real impermanent-loss risk?
  • Summarise the three most recent on-chain exploits and what was taken.
  • Compare GitHub developer activity for Solana and Sui over the last month.

Things that catch people out

  • Claude Code's flag is --transport http, not streamable-http — sse is the deprecated transport and will fail here.
  • Claude Desktop's claude_desktop_config.json is for local stdio servers. Adding a remote URL there does nothing.
  • Desktop reaches the server from Anthropic's cloud, not your machine, so a server that only answers on localhost will fail even when curl works locally.
  • Verify with claude mcp list, or /mcp inside a session.

When it doesn't connect

Symptom first, because that is what you have. The status codes below were produced against the live server rather than copied from elsewhere — if yours does not appear here, it is worth trusting that difference.

claude mcp add succeeds but the server never appears in /mcp.

It was added at project scope from a different directory, so it is not in scope for the session you are testing in.

Run claude mcp list from the same directory, and re-add without --scope project if you want it everywhere.

Desktop shows the connector but Claude never uses it, or says it has no tools.

Desktop caches connector state until the app is fully restarted.

Quit from the menu bar — closing the window is not enough on macOS — then reopen and start a new chat.

You added the URL to claude_desktop_config.json and nothing happened.

That file configures local stdio servers only. A remote URL in it is ignored silently, with no error to find.

Remove it and use Settings → Customize → Connectors instead.

Opening the endpoint in a browser returns {"detail": "Bad Request"}.

A browser sends a GET. MCP is JSON-RPC over POST, so a 400 here is the server working correctly — there is no page to serve at an MCP endpoint.

Nothing. A 400 on a plain GET is the expected response, and it confirms the server is reachable.

404 {"detail": "Not Found"}.

The URL has a trailing slash, or a path appended. /mcp/ and /mcp/sse are both distinct routes from /mcp, and neither exists.

Use the endpoint exactly as written, with no trailing slash and nothing after it.

The server shows as connected, but the model never calls it.

Not a connection problem. Most clients only call tools in an agent mode, and several ship new tools unticked or capped.

Switch to the client's agent mode, confirm the Alphaday tools are enabled in its tool picker, and ask something that cannot be answered without live data.

What you get once it's connected

22 datasets, reached by 57 tools — most datasets have a list form, a detail form and a trending form, which is why the two numbers differ. These four are the ones a general crypto API does not have:

Security exploits

180+ on-chain exploits and hacks, each with a written incident record.

Developer activity

3,000+ GitHub activity snapshots — commits and contributors per coin.

Kasandra

AI-detected chart patterns with a bullish/bearish signal and confidence score.

TVL yields

32,000+ DeFi yield pools with base and reward APY, TVL and IL risk.

News

Real-time news from 49 crypto outlets — 440,000+ articles, tagged and deduped.

Forum

59 governance forums — 60,000+ posts — behind one endpoint.

Blogs

133 project blogs — 19,000+ posts — in one feed.

Podcasts

118 crypto podcast feeds — 22,000+ episodes, each with its audio URL and duration.

Videos

121 YouTube channels — 34,000+ videos — timestamped.

Market coins

Prices, metadata, history and trending movers for the top coins.

Coin categories

700+ token categories; about half carry a market-cap aggregate.

Exchanges

140+ centralized exchanges with trust scores and volume.

On-chain DEXes

700+ DEXes with the chains and protocols behind them.

TVL fees

2,000+ protocol fee and revenue records across DeFi.

TVL stablecoins

400+ stablecoins — peg type, mechanism and circulating supply.

DAO

Live Snapshot proposals across 51 DAOs.

Events

6,000+ conferences, meetups, hackathons and side events.

Tags

A 17,000+ tag taxonomy — projects, chains and categories, with parents and children.

News summary

An AI briefing over the whole news corpus, focusable by project.

Keywords

What crypto is talking about, ranked, right now.

Projects

Search project-tagged content across the whole superfeed.

Fear & greed

The fear & greed index, per asset.

All 22 capabilities are listed on the MCP overview, with the tool count behind each.