Blocksize MCP server

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

read 2026-10-18

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Whose server it is

Registry nameinfo.blocksize.mcp/agentic-paymentsverified in the MCP registry

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

When we asked itchecked 2026-10-18

Stateanswerschecked 2026-10-18
Tools9
Server calls itselfBlocksize Agentic Market Intelligence
Server version0.6.24
Protocol version2025-06-18

On 2026-10-18 the server answered initialize and tools/list without a sign-in. First answer in 283 ms.

Measured dailydaily checks: 2, the first on 2026-10-19

Answeredmeasuring2 of the 7 daily checks it takes to print a share
Median first answer273 ms
Space in an agent's context≈ 1,501 tokensthe definitions of all its tools (9), which an agent carries on every turn
Tool definitionsA · 98 of 100

Parameters without a description: in 1 of 9

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 state of vendors' MCP servers: method and numbers →

Tools it offers9 tools · read 2026-10-18

search_pairs
Discover supported crypto, equity, FX, and metal symbols before using the paid HTTP API. Returns up to 50 catalog matches with asset class, available services, and pricing tier; it is free, read-only, and never returns live prices or…
list_instruments
List the supported instruments for one Blocksize service. This is free, read-only catalog metadata; it does not fetch live prices, create accounts, or start x402 payment.
get_pricing_info
Inspect current direct x402 per-call prices, authenticated connector starter-credit costs, supported USDC settlement networks, and the account-plan contact path. This is free read-only metadata; it does not initiate payment.
get_product_catalog
Inspect Blocksize raw data, supported equity ticker bid/ask, and premium agent-native workflow products, including starter-credit positioning, credit costs, suggested paid prices, endpoint templates, and upgrade path. This is free and…
recommend_account_plan
Recommend a sales-assisted Blocksize account plan from expected live-call volume, team size, recurring use, and SLA needs. This is free and does not collect contact details, create an entitlement, or start a purchase.
get_workflow_endpoint
Build the exact paid HTTP endpoint, method, starter-credit cost, and example body for a premium Blocksize workflow. This is free and read-only; it does not fetch live data, charge credits, or start x402.
get_market_data_endpoint
Build the exact x402-protected HTTP URL for one live market-data request. Returns method, URL, service notes, pricing docs, and next steps; it is read-only and does not fetch prices, charge a wallet, or submit payment.
search
Search Blocksize documentation and catalog metadata by keyword. This free read-only search returns document and instrument ids for fetch; it does not return live prices or start payment.
fetch
Fetch one document or instrument guide returned by search. This is free, read-only content retrieval with no account, credential, payment, or live-price side effects.

How to connect

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

{
  "mcpServers": {
    "agentic-payments": {
      "type": "http",
      "url": "https://mcp.blocksize.info/mcp/server/?utm_source=mcp-registry"
    }
  }
}

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.