Is the Crossingkeyintelligence Crossingkey MCP server down?

• Renamed "artifact.integrity_manifest" → "artifact_integrity_manifest" (letters, digits, _ and - only; max 64). Keep the old name as an alias for a release if clients already call it. (verify)

{
  "name": "artifact_integrity_manifest",
  "description": "PAID $0.10 USDC on Base via x402. Creates deterministic SHA-256 entries and a root manifest hash for supplied text artifacts. Calling this MCP tool does not spend funds; it returns the exact PAYMENT-REQUIRED challenge and canonical paid execution endpoint.",
  "inputSchema": {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "artifacts"
    ],
    "properties": {
      "artifacts": {
        "type": "array",
        "items": {
          "type": "object",
          "required": [
            "name",
            "content"
          ],
          "properties": {
            "name": {
              "type": "string",
              "maxLength": 300,
              "minLength": 1,
              "description": "Artifact name."
            },
            "content": {
              "type": "string",
              "description": "Text content to hash."
            }
          },
          "additionalProperties": false
        },
        "minItems": 1,
        "description": "Artifacts to include in the integrity manifest."
      }
    },
    "additionalProperties": false
  },
  "annotations": {
    "readOnlyHint": false,
    "openWorldHint": true,
    "idempotentHint": true,
    "destructiveHint": false
  },
  "title": "Purchase Artifact Integrity Manifest"
}

• Renamed "capability.get" → "capability_get" (letters, digits, _ and - only; max 64). Keep the old name as an alias for a release if clients already call it. (verify)

{
  "name": "capability_get",
  "description": "FREE. Use name for legacy deterministic capability metadata or capabilityId for public marketplace metadata, rights and provenance.",
  "inputSchema": {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "properties": {
      "name": {
        "type": "string",
        "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,159}$",
        "description": "Exact deterministic first-party machine capability name. Use either name or capabilityId, never both."
      },
      "capabilityId": {
        "$ref": "#/properties/name",
        "description": "Exact marketplace capability identifier. Use either capabilityId or name, never both."
      }
    },
    "additionalProperties": false
  },
  "annotations": {
    "readOnlyHint": true,
    "openWorldHint": false,
    "destructiveHint": false
  },
  "title": "capability.get"
}

• Renamed "capability.search" → "capability_search" (letters, digits, _ and - only; max 64). Keep the old name as an alias for a release if clients already call it. (verify)

{
  "name": "capability_search",
  "description": "FREE MARKETPLACE FILTERED DISCOVERY ONLY. Search active public marketplace capabilities when one or more filters are known: text, category, provider, delivery type, or price. Metadata is free; purchased execution and deliverables are not. Do NOT use for unfiltered browsing; use catalog.list. Do NOT use for CrossingKey digital/service offers; use offers.list. For one exact capabilityId use capability.get.",
  "inputSchema": {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "properties": {
      "limit": {
        "type": "integer",
        "default": 25,
        "maximum": 100,
        "minimum": 1,
        "description": "Maximum number of results to return; 1-100, defaults to 25."
      },
      "query": {
        "type": "string",
        "maxLength": 160,
        "description": "Optional case-insensitive search text across capability name, description, and category; maximum 160 characters."
      },
      "offset": {
        "type": "integer",
        "default": 0,
        "maximum": 10000,
        "minimum": 0,
        "description": "Zero-based result offset; defaults to 0."
      },
      "category": {
        "type": "string",
        "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,159}$",
        "description": "Optional exact marketplace category identifier."
      },
      "maxPrice": {
        "$ref": "#/properties/minPrice",
        "description": "Optional inclusive maximum USDC price in atomic units."
      },
      "minPrice": {
        "type": "string",
        "pattern": "^(0|[1-9][0-9]{0,29})$",
        "description": "Optional inclusive minimum USDC price in atomic units."
      },
      "provider": {
        "$ref": "#/properties/category",
        "description": "Optional exact provider identifier."
      },
      "deliveryType": {
        "enum": [
          "mcp_tool",
          "api",
          "digital_asset",
          "workflow",
          "service",
          "dataset",
          "content",
          "software",
          "other"
        ],
        "type": "string",
        "description": "Optional capability delivery-type filter."
      }
    },
    "additionalProperties": false
  },
  "annotations": {
    "readOnlyHint": true,
    "openWorldHint": false,
    "destructiveHint": false
  },
  "title": "capability.search"
}