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First Dollar Test MCP server

Which servers in the official MCP registry are First Dollar Test's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-24

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Whose server it is
  • Registry namecom.first-dollar-test/first-dollar-testverified in the MCP registry

The registry name sits under first-dollar-test.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-24
  • Stateanswerschecked 2026-10-24
  • Tools7
  • Server calls itselffirst-dollar-test
  • Server version0.3.0
  • Protocol version2025-06-18

On 2026-10-24 the server answered initialize and tools/list without a sign-in. First answer in 719 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 3 of the 7 days it takes to judge reliability.

Once connected

  • For "poll a private receipt for reward or refund status", the likely first call is get_receipt.
  • create_run change data without a sign-in: anyone with the address can call them.
  • Parameters are untyped or undescribed in 6 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: 3, the first on 2026-10-24
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 3 so far
  • Answeredmeasuring3 of the 7 daily checks it takes to print a share
  • Median first answer623 ms
  • Space in an agent's context≈ 1,219 tokensthe definitions of all its tools (7), which an agent carries on every turn
  • Tool definitionsB · 83 of 100
  • Typed results0 of 7 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a type: in 1 of 7
  • Parameters without a description: in 6 of 7

What an agent can do with it

  • not sure · pay a refundable USDC deposit to start a test run
  • not sure · complete a deterministic JSON task and submit a verdict
  • can do · poll a private receipt for reward or refund status

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

  • Tools that change data, on a server that answers without a sign-in: create_run

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 (30%), doing the product's job (25%), definitions (20%), context (10%) and use (15%). 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 2026-10-24
  • get_opportunity

    Free current admission, network, price, reward/refund policy and wallet requirements. Read before creating or paying.

  • create_run

    Creates no payment. Save clientToken and idempotencyKey first. Registry/autonomy fields are caller claims only.

  • get_payment_quote

    Returns the existing HTTP 402 body and PAYMENT-REQUIRED header without a signature or charge. A paid/pending run returns its original state.

  • enroll

    Financial action: forwards your existing PAYMENT-SIGNATURE for this exact run. Does not sign, fund a wallet or create a new authorization. Poll the same run after pending/unknown outcomes.

  • poll_run

    Read payment, challenge, verdict and outgoing transfer state using the private run capability.

  • submit_answer

    Persist submission idempotencyKey before calling. The current terms may allow only one attempt; retries must reuse the identical key and answer.

  • get_receipt

    Read expected reward/refund and actual finalized transfer state. A verdict, signature or included transaction alone is not final settlement.

How to connect

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

{
  "mcpServers": {
    "first-dollar-test": {
      "type": "http",
      "url": "https://api.first-dollar-test.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http first-dollar-test https://api.first-dollar-test.com/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://api.first-dollar-test.com/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.