Poplin MCP server

• Registry namecom.poplinmoney/publicverified in the MCP registry

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

• Stateanswerschecked 2026-11-01
• Tools11
• Server calls itselfPoplin
• Server version1.0.0
• Protocol version2025-06-18

On 2026-11-01 the server answered initialize and tools/list without a sign-in. First answer in 471 ms.

• Whether its tools do the product's job has not been judged yet.
• Checked on 2 of the 7 days it takes to judge reliability.

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.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 2 so far
• Answeredmeasuring2 of the 7 daily checks it takes to print a share
• Median first answer471 ms
• Space in an agent's context≈ 1,388 tokensthe definitions of all its tools (11), which an agent carries on every turn
• Tool definitionsB · 86 of 100
• Typed results0 of 11 toolsdeclared outputSchema: results come typed, read once

• Parameters without a description: in 9 of 11

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 →

• list_legal_documents

  Lists Poplin's published legal documents, such as the terms of service, privacy policy and risk disclosure, with a link to the full text of each. Use it when someone asks about Poplin's terms, policies or what it doesn't allow. It returns…

• get_receiving_accounts

  Lists the currencies Poplin can open a receiving bank account in, whether the account takes payments from other people, and the fee and deposit limits for personal and business accounts. Pass a country to see whether people living there…

• get_payout_options

  Lists where money can be paid out to a bank account: the country, the currency it arrives in, the method, the fee, the largest amount and how fast it arrives, for personal and business accounts. Give a country, a currency or both. Use it…

• get_supported_countries

  Says which countries people can sign up to Poplin from, including any regions that are excluded, and which countries money can be sent to. Pass a country to check one. Use it when someone asks whether Poplin works where they live or where…

• list_banks

  Lists the banks a bank payout can reach in a country, with the other names people know them by. Use it when someone asks whether a particular bank is supported. Only some countries have a bank list.

• get_business_requirements

  Shows what a business in a country is asked for when it signs up: the company types its registry recognises and what that registry calls the standard documents. Use it when a business owner asks what they need to get started.

• get_rate_history

  Shows how the mid-market exchange rate from US dollars to another currency has moved over the last 24 hours, 7 days, 30 days, 90 days or a year. Mid-market is the rate before any fees, so it is not the rate a payment is priced at, and a…

• get_send_quote

  Estimates paying a bank account from a Poplin account: how much is sent in US dollars, how much arrives in the other currency, the rate, the fees, the limits and how fast it arrives, for personal and business accounts at standard pricing…

• get_receive_quote

  Estimates how many US dollars arrive in a Poplin account when someone pays into its receiving bank account in another currency, with the rate, the fees and the deposit limits, for personal and business accounts at standard pricing. Use it…

• get_stablecoin_networks

  Lists the networks that stablecoins such as USDC can be received from and sent to, with the fee and speed for each, and Poplin's home network. Use it only when someone asks about stablecoin deposits or sends.

• get_stablecoin_transfer_quote

  Estimates the fee and speed of sending USDC from Poplin to another network, such as Base or Ethereum, for a fast and a standard transfer. Use it only when someone asks about sending stablecoins to another network.

• com.poplinmoney/accountanswers, requires sign-inverified in the MCP registry