com.crossingkeyintelligence/crossingkey-mcp

down checked 2026-11-08T18:37:19.684Z

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Publisher-provided title

CrossingKey MCP

Publisher-provided description

Agent-native MCP for governed commerce, x402 payments, paid capabilities, and verifiable receipts.

Summary by lookupd

Lets agents search, quote and pay for marketplace capabilities, plus run paid hashing, JSON, PII, and MCP audit tools over x402.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http crossingkey https://mcp.crossingkeyintelligence.com/mcp

Codex, remote (streamable-http)

codex mcp add crossingkey --url https://mcp.crossingkeyintelligence.com/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "crossingkey": {
      "url": "https://mcp.crossingkeyintelligence.com/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (28 tools)

Publisher-provided text

• marketplace.describe FREE, read-only marketplace overview. Use this first for marketplace-specific capability commerce, fee policy, creator rights, payment rails, and active catalog
• provider.apply FREE public application intake. Always pending, never creates credentials or active capabilities.
• provider.get FREE. Public active provider metadata. Pending applications require owner or administrator authorization.
• capability.get FREE. Use name for legacy deterministic capability metadata or capabilityId for public marketplace metadata, rights and provenance.
• capability.search FREE MARKETPLACE FILTERED DISCOVERY ONLY. Search active public marketplace capabilities when one or more filters are known: text, category, provider, delivery t
• catalog.list FREE MARKETPLACE UNFILTERED DISCOVERY ONLY. Page through active public marketplace capabilities when no search filters are needed. Metadata is free; execution,
• commerce.quote FREE MARKETPLACE PAYMENT QUOTE ONLY. After selecting an active marketplace capabilityId, return authoritative gross price, CrossingKey fee, provider share, and
• creator.apply FREE WRITE. Private creator intake for assets needing a capability model. No ownership transfer and AI training defaults false.
• provider.describe FREE read-only provider and commerce policy discovery. Use this before selecting an offer or capability.
• offers.list FREE read-only public offer and capability discovery. This tool never starts payment or execution.
• requirements.check FREE read-only requirements check. This tool never authorizes or starts payment or execution.
• cost.estimate FREE read-only cost estimate. This tool never creates checkout, reserves funds, or contacts a facilitator.
• result.preview FREE read-only result-shape preview. This tool never executes a capability or creates an entitlement or receipt.
• execution.preflight FREE read-only execution preflight. Returns READY_FOR_HUMAN_AUTHORIZATION only; it never authorizes, purchases, settles, executes, or creates records.
• credits.options FREE read-only legacy credit compatibility status. New prepaid-credit sales are disabled in v4; historical paid credits remain redeemable through a separate com
• x402.compatibility_audit PAID $1.00 USDC on Base via x402. Audits an x402 endpoint for v1/v2 compatibility defects. Calling this MCP tool does not spend funds; it returns the exact PAYM
• mcp.schema_audit PAID $1.00 USDC on Base via x402. Scores supplied MCP tool schemas for discoverability, descriptions, and bounded input contracts. Calling this MCP tool does no
• openapi.quality_audit PAID $1.00 USDC on Base via x402. Evaluates structural quality and required fields in an OpenAPI document. Calling this MCP tool does not spend funds; it return
• machine_commerce.readiness_audit PAID $2.00 USDC on Base via x402. Checks machine-commerce discovery and health surfaces. Calling this MCP tool does not spend funds; it returns the exact PAYMEN
• artifact.integrity_manifest 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 spe
• hash.encode PAID $0.01 USDC on Base via x402. Computes a SHA-256 digest and UTF-8 byte count for supplied text. Calling this MCP tool returns a payment challenge and does n
• secret.scan PAID $0.01 USDC on Base via x402. Detects selected credential patterns and returns classifications and positions, not matched values. Heuristic, not comprehensi
• pii.scan PAID $0.01 USDC on Base via x402. Detects selected personal-data patterns and returns classifications and positions, not matched values. Heuristic, not comprehe
• json.repair PAID $0.01 USDC on Base via x402. Validates JSON and repairs a limited set of formatting errors. May return supplied content. Calling this MCP tool returns a pa
• prompt.audit PAID $0.01 USDC on Base via x402. Scores selected prompt structure signals using deterministic heuristics. Calling this MCP tool returns a payment challenge and
• mcp.launch_audit PAID $9.00 USDC on Base via x402. Performs bounded live MCP discovery, health, transport, schema, and receiver-only checks against a public endpoint. No payment
• x402.purchase_path_audit PAID $19.00 USDC on Base via x402. Performs a bounded no-payment purchase-challenge audit for a selected capability, validating status, requirements, destinatio
• xkey.validate PAID $0.10 USDC on Base via x402. Validates and normalizes one bounded XKEY intake payload. Calling this MCP tool returns the exact PAYMENT-REQUIRED challenge a

Details

• Version: 3.0.1
• Transports: streamable-http
• Uptime (7 days): 17%
• Median latency: 1651 ms
• First indexed: 2026-11-01T08:53:34.029Z
• Last seen in registry: 2026-11-01T08:53:34.061Z
• Repository: https://github.com/crossingkey-holdings/crossingkey-mcp
• Website: https://www.crossingkeyintelligence.com

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