Koskamo

Plain Ballot MCP

A read-only, nonpartisan MCP server that provides tools to list election issues, retrieve candidate ballots for a specific address with verified quotes, and score how well candidates fit a voter's stated priorities using deterministic arithmetic.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Plain Ballot MCP logo, by n8peaceCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-06Published by n8peace
MCP endpoint (Streamable HTTP)
https://plainballot.com/mcp
Vendor documentation

What its tools do

3 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (3)

3 of 3 have a description · 3 of 3 declare behavior hints · 1 of 2 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • List available election issues and their wording
  • Retrieve candidate positions and verified quotes for a specific address
  • Score candidate fit based on voter priorities

Source and maintenance

Community listingRegistry 1.0.0
mcp-registry: io.github.n8peace/plain-ballot@1.0.0Source repositoryProject website
Maintenance checked

Protocol and capabilities

Server
plain-ballot 1.0.0
MCP protocol negotiated in check
2025-11-25
Tools
3 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Plain Ballot shows who's on a U.S. voter's November 3, 2026 ballot and where each choice stands on 18 issues, each position backed by an exact quote and a source URL. Coverage: every race in California, plus U.S. House and Senate races in all 50 states. Rules for using it: - Stay nonpartisan. Report positions and sources; don't tell the voter how to vote or add your own judgment of candidates. - Quote and link sources when you state a position. A missing position means no public source was found; never fill it in or infer it from party. - Fit scores only reflect the priorities the voter gave you. Ask the voter for their priorities; never guess them from who they are. - Positions are researched by AI agents that had to agree, and every quote was checked against its page. Unless reviewedByPerson is true, a person hasn't checked them. - Plain Ballot may not list every race on the voter's ballot: outside California it has only U.S. House and Senate (partial is true and the notice says so), and some local contests anywhere may be missing. Don't stop there. Research the missing races yourself to the same standard: take the list of races from the official sample ballot, quote candidates' own words with a link, say no public position was found rather than guessing, and tell the voter which positions came from your own search rather than from Plain Ballot. - The voter's address is only used to look up districts and isn't stored. Site: https://plainballot.com. Open data (ODbL): https://github.com/n8peace/open-election-data.

Tools

3 advertised

list_issues — List the issues
Advertised by the server during the last successful anonymous check.
Advertised read-only

The 18 issues Plain Ballot tracks. Each has two sides, each worded the way its own supporters would say it. Use the short side labels ("l" and "r") when giving priorities to score_fit.

list_issues input schema
{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {}
}
list_issues annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
get_ballot — Get a ballot
Advertised by the server during the last successful anonymous check.
Advertised read-only

Every researched race on the ballot for a U.S. street address, with each choice's position on the issues that office decides, the exact quote, and the source URL.

get_ballot input schema
{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "address"
  ],
  "properties": {
    "address": {
      "type": "string",
      "maxLength": 200,
      "minLength": 5,
      "description": "Full street address with city, state and ZIP"
    }
  }
}
get_ballot annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
score_fit — Score fit with the voter's priorities
Advertised by the server during the last successful anonymous check.
Advertised read-only

How closely each choice on the voter's ballot fits the priorities the voter stated, from 0 to 100. Plain arithmetic, the same as plainballot.com: issues where a choice has no sourced position are left out, never guessed. Only use priorities the voter actually gave you.

score_fit input schema
{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "address",
    "priorities"
  ],
  "properties": {
    "address": {
      "type": "string",
      "maxLength": 200,
      "minLength": 5
    },
    "priorities": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "issue",
          "side"
        ],
        "properties": {
          "side": {
            "type": "string",
            "description": "A side label from list_issues, or \"neither side\""
          },
          "issue": {
            "enum": [
              "tax",
              "wages",
              "trade",
              "debt",
              "housing",
              "schools",
              "transit",
              "safety",
              "sentencing",
              "immigration",
              "guns",
              "abortion",
              "gender",
              "cannabis",
              "health",
              "energy",
              "voting",
              "judicial"
            ],
            "type": "string"
          },
          "strength": {
            "enum": [
              "lean",
              "strong"
            ],
            "type": "string",
            "default": "lean"
          },
          "importance": {
            "enum": [
              "low",
              "medium",
              "high"
            ],
            "type": "string",
            "default": "medium"
          }
        }
      },
      "maxItems": 18,
      "minItems": 1
    }
  }
}
score_fit annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
416 ms
95th percentile latency
416 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 416 ms · metadata changed · 3 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http plain-ballot-mcp https://plainballot.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add plain-ballot-mcp --url https://plainballot.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable plain-ballot-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "plain-ballot-mcp": {
      "url": "https://plainballot.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "plain-ballot-mcp": {
      "type": "streamableHttp",
      "url": "https://plainballot.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start plain-ballot-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "plain-ballot-mcp": {
      "type": "http",
      "url": "https://plainballot.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http plain-ballot-mcp https://plainballot.com/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://plainballot.com/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "plain-ballot-mcp": {
      "serverUrl": "https://plainballot.com/mcp"
    }
  }
}

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