PolyBridge
by crowdvector · remote · no sign-in to list tools · v0.2.5 · published by GitHub user crowdvector
Calibrated probabilistic foresight for AI agents, powered by live prediction-market signal.
2 tools: 1 change things and 1 only read.
Scanned Oct 21, 2026
- Deletes or cancels0Claude Code: deny
- Can't be undone0Claude Code: ask
- Changes things1Claude Code: ask: see these tools
- Only reads1Claude Code: allow: see these tools
1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.
claude mcp add --transport http polybridge https://mcp.polybridge.ai/mcpFindings
Matches of fixed checks, with the text they matched.
The server marks "polybridge_forecast" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"openWorldHint":true}; The description's first verb is "generate": a word for a change.
Tools
Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.
2 tools
Changes things 1Claude Code: ask
polybridge_forecastGenerate a read-only probability forecast for a clearly stated future event by searching relevant prediction markets and synthesizing evidence.1 finding
Why it is in this group
- The description's first verb is "generate": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
The server marks "polybridge_forecast" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"openWorldHint":true}; The description's first verb is "generate": a word for a change.
Description, as the server wrote it Generate a read-only probability forecast for a clearly stated future event by searching relevant prediction markets and synthesizing evidence. Use when the user asks for a probability, outlook, or forecast; use polybridge_search when they only need market discovery. Does not place trades, provide financial advice, or access private/internal data.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
Only reads 1Claude Code: allow
polybridge_searchSearch public prediction markets for markets relevant to a natural-language topic or question.No findings
Why it is in this group
- The name "polybridge_search" says "search": a word for reading.
Description, as the server wrote it Search public prediction markets for markets relevant to a natural-language topic or question. Use when you need candidate markets, market URLs, outcomes, statuses, and relevance scores. Do not use for a final probability forecast, market-history lookup, trading, or private/internal data. Scores are relevance scores, not probabilities.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Install
Pinned to version 0.2.5. Values in angle brackets are yours to fill in.
claude mcp add --transport http polybridge https://mcp.polybridge.ai/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__polybridge__polybridge_search"
],
"ask": [
"mcp__polybridge__polybridge_forecast"
],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as polybridge. Review it before you use it.