{
  "data": {
    "tool": {
      "category": "",
      "endpoint": "https://mcp.parlay.run/mcp",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/parlay.json",
      "kind": "mcp",
      "listed": "indexed",
      "liveUrl": "https://www.anchorterminal.com/api/v1/live/parlay.json",
      "markdownUrl": "https://www.anchorterminal.com/tools/parlay.md",
      "mcpTools": {
        "check": {
          "checker": "anchor-check/1.0",
          "totalTokens": 1690,
          "counts": {
            "error": 0,
            "note": 1,
            "warn": 6
          },
          "findings": [
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "compare_markets",
              "message": "none of its 2 parameters has a description",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "discover_markets",
              "message": "none of its 4 parameters has a description",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "inspect_platform",
              "message": "none of its 3 parameters has a description",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "market_brief",
              "message": "3 parameters without a description: limit, real_money_only, topic",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "scan_discrepancies",
              "message": "1 parameter without a description: limit",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "search_markets",
              "message": "none of its 3 parameters has a description",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC24",
              "severity": "note",
              "message": "6 of 6 tools have no outputSchema",
              "fix": "Declare outputSchema for tools that return structured data, and return structuredContent that matches it."
            }
          ]
        },
        "checkedAt": "2026-10-03T22:18:45Z",
        "count": 6,
        "note": "answered without the initialize handshake",
        "schemaTokens": 1690,
        "status": "ok",
        "tools": [
          {
            "name": "search_markets",
            "title": "Search prediction markets",
            "description": "Search live prediction markets and event contracts across Polymarket, Kalshi, Limitless (real-money) and Manifold (sentiment). Use for queries on election odds, political markets, Fed rate decisions, crypto prices, sports outcomes, geopolitics, and other binary markets with crowd-sourced probabilities. Returns unified results with title, current probability, volume, liquidity, expiration, source venue, and risk flags. For topic synthesis use `market_brief`; for browsing trending markets use `discover_markets`.",
            "inputSchema": {
              "$schema": "http://json-schema.org/draft-07/schema#",
              "additionalProperties": false,
              "properties": {
                "limit": {
                  "default": 20,
                  "maximum": 50,
                  "minimum": 1,
                  "type": "number"
                },
                "query": {
                  "type": "string"
                },
                "real_money_only": {
                  "default": false,
                  "type": "boolean"
                }
              },
              "required": [
                "query"
              ],
              "type": "object"
            },
            "annotations": {
              "openWorldHint": true,
              "readOnlyHint": true
            }
          },
          {
            "name": "discover_markets",
            "title": "Discover trending markets",
            "description": "Browse trending, high-volume, fast-moving, or high-disagreement prediction markets across Polymarket, Kalshi, Limitless, and Manifold. Use when the user wants to explore what's happening — \"what's hot on Polymarket today\", \"show me biggest political markets\", \"what events are ending soon\" — rather than search a specific topic. Filter by category and sort by volume, newest, or ending soon.",
            "inputSchema": {
              "$schema": "http://json-schema.org/draft-07/schema#",
              "additionalProperties": false,
              "properties": {
                "category": {
                  "type": "string"
                },
                "limit": {
                  "default": 20,
                  "maximum": 50,
                  "minimum": 1,
                  "type": "number"
                },
                "real_money_only": {
                  "default": false,
                  "type": "boolean"
                },
                "sort_by": {
                  "default": "volume",
                  "enum": [
                    "volume",
                    "newest",
                    "ending_soon"
                  ],
                  "type": "string"
                }
              },
              "type": "object"
            },
            "annotations": {
              "openWorldHint": true,
              "readOnlyHint": true
            }
          },
          {
            "name": "compare_markets",
            "title": "Compare markets across venues",
            "description": "Compare the same event contract across Polymarket, Kalshi, and Limitless side-by-side: probability, liquidity, settlement rules, and venue type. Use when the user wants to know \"what's the spread between Polymarket and Kalshi on X\" or \"which venue has better liquidity for Y\". Returns match confidence buckets (high/medium/low) and explains any mismatches. Real-money venues only — Manifold is excluded because play-money pricing isn't comparable to real-money.",
            "inputSchema": {
              "$schema": "http://json-schema.org/draft-07/schema#",
              "additionalProperties": false,
              "properties": {
                "limit": {
                  "default": 5,
                  "maximum": 20,
                  "minimum": 1,
                  "type": "number"
                },
                "query": {
                  "type": "string"
                }
              },
              "required": [
                "query"
              ],
              "type": "object"
            },
            "annotations": {
              "openWorldHint": true,
              "readOnlyHint": true
            }
          },
          {
            "name": "scan_discrepancies",
            "title": "Scan cross-venue discrepancies",
            "description": "Surface cross-venue price discrepancies between Polymarket, Kalshi, and Limitless as a discovery feed for price discovery and divergence detection. Default threshold is 0.5% spread, below typical round-trip fees — most results are informational, not tradable arbitrage. Raise `min_spread` to 0.03+ for after-fee opportunities. The optional `query` parameter post-filters results by topic keywords on event titles — it does not perform a topic search; for topic-driven retrieval use `discover_markets` or `search_markets`. Pairs with missing volume data on at least one venue are flagged 'volume_unconfirmed'. All results are indicative only — not trade recommendations. Real-money venues only. Orderbook depth is not confirmed in Phase 1.",
            "inputSchema": {
              "$schema": "http://json-schema.org/draft-07/schema#",
              "additionalProperties": false,
              "properties": {
                "limit": {
                  "default": 20,
                  "maximum": 50,
                  "minimum": 1,
                  "type": "number"
                },
                "min_spread": {
                  "default": 0.005,
                  "description": "Minimum price gap to report (0.005 = 0.5%, 0.03 = 3 percentage points). Default 0.005 surfaces price discovery signals, most of which are below typical 4% round-trip fees and therefore informational rather than tradable. Raise to 0.03+ to filter for after-fee opportunities.",
                  "maximum": 0.5,
                  "minimum": 0.001,
                  "type": "number"
                },
                "min_volume": {
                  "default": 1000,
                  "description": "Minimum 24h USD volume on the thinner side of each pair. Pairs where at least one venue has missing volume data are kept but tagged with risk_flag 'volume_unconfirmed'. Set to 0 to disable.",
                  "minimum": 0,
                  "type": "number"
                },
                "query": {
                  "description": "Optional post-filter on event titles by topic keywords (e.g. 'crypto', 'election', 'fed'). This filters the discovery feed locally — it is not a topic search and may return zero results when today's biggest discrepancies don't overlap your topic. Omit to receive the full feed.",
                  "type": "string"
                }
              },
              "type": "object"
            },
            "annotations": {
              "openWorldHint": true,
              "readOnlyHint": true
            }
          },
          {
            "name": "market_brief",
            "title": "Generate market brief",
            "description": "Generate a synthesized brief for a topic, combining real-money signals from Polymarket, Kalshi, and Limitless with Manifold community sentiment. Use for analytical queries like \"what do markets think about the 2028 election\", \"odds on a Fed rate cut\", or \"how is crypto priced for year-end\". Returns top markets by volume, cross-venue divergences, venue coverage, and risk flags. For raw market lists use `search_markets`.",
            "inputSchema": {
              "$schema": "http://json-schema.org/draft-07/schema#",
              "additionalProperties": false,
              "properties": {
                "limit": {
                  "default": 10,
                  "maximum": 30,
                  "minimum": 5,
                  "type": "number"
                },
                "min_volume": {
                  "default": 500,
                  "description": "Minimum 24h USD volume per market. Real-money markets with missing volume data are kept but tagged with risk_flag 'volume_unconfirmed'. Sentiment markets (Manifold) are exempt — their volume is denominated in Mana, not USD. Set to 0 to disable.",
                  "minimum": 0,
                  "type": "number"
                },
                "real_money_only": {
                  "default": false,
                  "type": "boolean"
                },
                "topic": {
                  "type": "string"
                }
              },
              "required": [
                "topic"
              ],
              "type": "object"
            },
            "annotations": {
              "openWorldHint": true,
              "readOnlyHint": true
            }
          },
          {
            "name": "inspect_platform",
            "title": "Inspect platform",
            "description": "Inspect a single named venue. Returns available capabilities, market data for the query, and metadata quality flags. Use when the user explicitly names a venue — \"show me Polymarket markets on AI\", \"what's on Kalshi for Q4 inflation\", \"Manifold markets about geopolitics\". For cross-venue queries use `search_markets` or `compare_markets`.",
            "inputSchema": {
              "$schema": "http://json-schema.org/draft-07/schema#",
              "additionalProperties": false,
              "properties": {
                "limit": {
                  "default": 20,
                  "maximum": 50,
                  "minimum": 1,
                  "type": "number"
                },
                "platform": {
                  "enum": [
                    "polymarket",
                    "kalshi",
                    "opinion",
                    "limitless",
                    "smarkets",
                    "myriad",
                    "metaculus",
                    "probable",
                    "baozi",
                    "manifold"
                  ],
                  "type": "string"
                },
                "query": {
                  "type": "string"
                }
              },
              "required": [
                "platform",
                "query"
              ],
              "type": "object"
            },
            "annotations": {
              "openWorldHint": true,
              "readOnlyHint": true
            }
          }
        ]
      },
      "name": "Parlay",
      "note": "Indexed from the official MCP registry: facts and our own checks, not reviewed, so no score, grade or rank.",
      "packages": null,
      "pageJsonUrl": "https://www.anchorterminal.com/tools/parlay.json",
      "popularity": {
        "githubStars": 6
      },
      "registryName": "run.parlay/parlay",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://mcp.parlay.run/mcp"
        }
      ],
      "repository": "https://github.com/parlay-run/parlay-mcp",
      "reviewed": false,
      "slug": "parlay",
      "source": "the official MCP registry",
      "sourceUrl": "https://registry.modelcontextprotocol.io/v0.1/servers?search=run.parlay/parlay",
      "summary": "Read-only MCP server for live Polymarket, Kalshi, Limitless odds; Manifold sentiment.",
      "updatedAt": "2026-05-21T02:54:28Z",
      "url": "https://www.anchorterminal.com/tools/parlay",
      "vendor": "parlay.run",
      "vendorUrl": "https://parlay.run",
      "version": "1.0.1",
      "websiteUrl": "https://parlay.run",
      "where": "hosted",
      "why": [
        "vendor"
      ]
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/tools/parlay",
    "json": "https://www.anchorterminal.com/tools/parlay.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/tools/parlay.md",
    "slim": "https://www.anchorterminal.com/tools/parlay.min.md"
  },
  "markdown": "# Parlay\n\n\u003e Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/\n\n- Kind: MCP server, by parlay.run (https://parlay.run)\n- Listed because: It's published in the registry under parlay.run, a namespace the registry only gives to whoever proves they control that domain.\n- What the official MCP registry says: Read-only MCP server for live Polymarket, Kalshi, Limitless odds; Manifold sentiment.\n\n## Facts\n\n- MCP registry: `run.parlay/parlay` 1.0.1\n- Endpoint: https://mcp.parlay.run/mcp (streamable HTTP)\n- Source: https://github.com/parlay-run/parlay-mcp\n- Website: https://parlay.run\n- GitHub stars: 6\n- Registry entry updated: 2026-05-21\n\n## Tools\n\n- Tools it lists (6, about 1,690 tokens of context, `tools/list` without credentials, checked 2026-10-03 22:18 UTC):\n  - `search_markets` (read-only): Search live prediction markets and event contracts across Polymarket, Kalshi, Limitless (real-money) and Manifold (sentiment). Use for queries on election…\n  - `discover_markets` (read-only): Browse trending, high-volume, fast-moving, or high-disagreement prediction markets across Polymarket, Kalshi, Limitless, and Manifold. Use when the user wants…\n  - `compare_markets` (read-only): Compare the same event contract across Polymarket, Kalshi, and Limitless side-by-side: probability, liquidity, settlement rules, and venue type. Use when the…\n  - `scan_discrepancies` (read-only): Surface cross-venue price discrepancies between Polymarket, Kalshi, and Limitless as a discovery feed for price discovery and divergence detection. Default…\n  - `market_brief` (read-only): Generate a synthesized brief for a topic, combining real-money signals from Polymarket, Kalshi, and Limitless with Manifold community sentiment. Use for…\n  - `inspect_platform` (read-only): Inspect a single named venue. Returns available capabilities, market data for the query, and metadata quality flags. Use when the user explicitly names a venue…\n- How its tools read to an agent (0 errors, 6 warnings, 1 note, about 1,690 tokens; rules at https://www.anchorterminal.com/check.md; not part of the score):\n  - warn TC11 compare_markets: none of its 2 parameters has a description\n  - warn TC11 discover_markets: none of its 4 parameters has a description\n  - warn TC11 inspect_platform: none of its 3 parameters has a description\n  - warn TC11 market_brief: 3 parameters without a description: limit, real_money_only, topic\n  - warn TC11 scan_discrepancies: 1 parameter without a description: limit\n  - warn TC11 search_markets: none of its 3 parameters has a description\n  - note TC24 server: 6 of 6 tools have no outputSchema\n\n- JSON: https://www.anchorterminal.com/api/v1/tools/parlay.json\n- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming\n",
  "meta": {
    "attribution": "Anchor Terminal (https://www.anchorterminal.com)",
    "docs": "https://www.anchorterminal.com/docs/",
    "generatedAt": "2026-10-04",
    "license": "CC-BY-4.0",
    "method": "https://www.anchorterminal.com/benchmark/",
    "methodology": "0.3",
    "openapi": "https://www.anchorterminal.com/openapi.json",
    "preview": false,
    "run": "2026-10-01",
    "runLabel": "October 2026 research run"
  },
  "page": {
    "breadcrumbs": [
      {
        "name": "Home",
        "url": "https://www.anchorterminal.com/"
      },
      {
        "name": "Terminal",
        "url": "https://www.anchorterminal.com/tools/"
      },
      {
        "name": "Indexed",
        "url": "https://www.anchorterminal.com/indexed/"
      },
      {
        "name": "Parlay",
        "url": ""
      }
    ],
    "description": "Parlay, an MCP server by parlay.run, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Read-only MCP server for live Polymarket, Kalshi, Limitless odds; Manifold sentiment.",
    "facts": [
      "not reviewed",
      "not ranked",
      "facts only"
    ],
    "h1": "Parlay",
    "image": "https://www.anchorterminal.com/assets/og/indexed.png",
    "path": "/tools/parlay",
    "published": "",
    "section": "indexed",
    "title": "Parlay: MCP server, indexed from the official MCP registry",
    "toc": null,
    "updated": "2026-10-04",
    "url": "https://www.anchorterminal.com/tools/parlay"
  },
  "tokens": {
    "markdown": 900,
    "slim": 830
  },
  "version": 1
}