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PubFi MCP server

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

read 2026-10-20

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Whose server it is
  • Registry nameai.pubfi/mcpverified in the MCP registry

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

When we asked itchecked 2026-10-20
  • Stateanswerschecked 2026-10-20
  • Tools4
  • Server calls itselfpubfi-rust-mcp
  • Server version0.2.84
  • Protocol version2025-11-25

On 2026-10-20 the server answered initialize and tools/list without a sign-in. First answer in 549 ms.

Should an agent connect itNot proven either way yet
  • Whether its tools do the product's job has not been judged yet.

Once connected

  • Parameters are untyped or undescribed in 3 of 4 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: 7, the first on 2026-10-20
  • INITE MCP score77 of 100answers 100 · definitions 88 · context 100 · use 0
  • Answered100% of days7 of 7 daily checks
  • Median first answer573 ms
  • Space in an agent's context≈ 1,046 tokensthe definitions of all its tools (4), which an agent carries on every turn
  • Tool definitionsB · 88 of 100
  • Typed results4 of 4 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 3 of 4

What an agent can do with it

  • not sure · check wallet balances and transfers on Polkadot
  • not sure · compare governance activity across DAOs and chains
  • not sure · find and compare crypto data APIs by coverage and access

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 (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 offers4 tools · read 2026-10-20
  • pubfi.capabilities.list

    Enumerate the complete installed Registry v2 catalog as deterministic compact pages. The server does not rank, infer intent, or choose a capability.

  • pubfi.capabilities.get

    Return the full typed request, response, metering, and readiness contract for one exact capability id from the installed Registry generation.

  • pubfi.route.execute

    Execute one exact GET or POST path through the authenticated PubFi account lane and the same Registry v2 matcher and typed executor as the HTTP gateway. Append :free only when the capability catalog publishes that exact account-scoped…

  • pubfi.substrate.runtime_upgrade.verify

    Verify one reviewed Substrate System.apply_authorized_upgrade extrinsic through the authenticated account lane. Supply the expected Blake2b-256 hash of the FRAME System AuthorizedUpgrade code payload, not the active :code hash at the…

How to connect

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

{
  "mcpServers": {
    "pubfi": {
      "type": "http",
      "url": "https://mcp.pubfi.ai"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http pubfi https://mcp.pubfi.ai

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://mcp.pubfi.ai 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.