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The River MCP server

Which MCP servers are The River's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-26

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Whose server it is
  • Registry namemarkets.theriver/the-riververified in the MCP registry

The registry name sits under theriver.markets. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-26
  • Stateanswerschecked 2026-10-26
  • Tools7
  • Server calls itselfthe-river
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-26 the server answered initialize and tools/list without a sign-in. First answer in 238 ms.

Should an agent connect itNot proven either way yet
  • Whether its tools do the product's job has not been judged yet.
  • Checked on 1 of the 7 days it takes to judge reliability.

Once connected

  • For "compare issuer prices for the same stock", the likely first call is compare_issuers.
  • Parameters are untyped or undescribed in 5 of 7 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 1, the first on 2026-10-26
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 1 so far
  • Answeredmeasuring1 of the 7 daily checks it takes to print a share
  • Median first answer889 ms
  • Space in an agent's context≈ 1,137 tokensthe definitions of all its tools (7), which an agent carries on every turn
  • Tool definitionsB · 88 of 100
  • Typed results0 of 7 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 5 of 7

What an agent can do with it

  • not sure · buy tokenized stocks from your own crypto wallet
  • can do · compare issuer prices for the same stock
  • not sure · set recurring buys and stop-loss strategies that run onchain

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers7 tools · read 2026-10-26
  • list_stocks

    Tokenized stocks listed on The River, with ticker, token symbol, issuer, chain and trade link. Filter by chain and/or a search query (ticker, symbol or name).

  • trade_link

    A pre-filled River trade link. A buy by ticker with usd (no address or chain) returns a best-price link that opens the cheapest issuer for the user. Give exactly one of usd (buy only, settlement stablecoin, up to 6 decimals) or qty…

  • strategy_link

    A pre-filled River strategy card link (Base, ST0x stocks). Cards and fields: dip (budget, start, step, rungs); peg (amount, discount, max); recurring (budget, days, hours, max); cycle (budget, buy, step, levels, repeat, top, sell)…

  • wallet_holdings

    Any wallet's stock-token and cash balances on every chain The River serves (public onchain data), plus its read-only River profile link.

  • wallet_pnl

    Any wallet's profit and loss on Base, from public chain data. Wallet: its stock tokens since 1 Oct 2026, average cost from the wallet's own USDC trades on any venue (DEX or orderbook), realised and unrealised per token; transfers are…

  • compare_issuers

    Where a tokenized stock is cheapest: each issuer's token (ST0x, Coinbase, Robinhood) priced per share for a $100 buy, against the stock's own price (US, or the home exchange's in dollars), with the gap in % and the lowest issuer. From…

  • fair_value

    Last US market price and market status of listed stocks (what the tokens track). Up to 12 tickers.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "the-river": {
      "type": "http",
      "url": "https://theriver.markets/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http theriver https://theriver.markets/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://theriver.markets/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.