CrossingKey MCP
Agent-native MCP for governed commerce, x402 payments, paid capabilities, and verifiable receipts.
| Endpoint | https://mcp.crossingkeyintelligence.com/mcp (streamable-http) |
|---|---|
| Registry version | 3.0.1 |
| Now | 28 tools · grade F (20) · pin ts_094660ccf092ecd88f43a24f85af5663 · protocol 2025-06-18 |
| First / last listed | 2026-10-26 04:06 UTC / 2026-10-26 04:06 UTC |
| Grade over time | 2026-10-26: F (20), 28 tools |
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Tools: marketplace.describe provider.apply provider.get capability.get capability.search catalog.list commerce.quote creator.apply provider.describe offers.list requirements.check cost.estimate result.preview execution.preflight credits.options x402.compatibility_audit mcp.schema_audit openapi.quality_audit machine_commerce.readiness_audit artifact.integrity_manifest hash.encode secret.scan pii.scan json.repair prompt.audit mcp.launch_audit x402.purchase_path_audit xkey.validate
marketplace.describe | FREE, read-only marketplace overview. Use this first for marketplace-specific capability commerce, fee policy, creator rights, payment rails, and active catalog counts; use provider.describe for the broader CrossingKey provider and legacy offer surface. params: none |
provider.apply | FREE public application intake. Always pending, never creates credentials or active capabilities. params: displayName*, slug*, description*, website, contact* |
provider.get | FREE. Public active provider metadata. Pending applications require owner or administrator authorization. params: providerId* |
capability.get | FREE. Use name for legacy deterministic capability metadata or capabilityId for public marketplace metadata, rights and provenance. params: name, capabilityId |
capability.search | 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 capabili params: query, category, provider, deliveryType, minPrice, maxPrice, offset, limit |
catalog.list | FREE MARKETPLACE UNFILTERED DISCOVERY ONLY. Page through active public marketplace capabilities when no search filters are needed. Metadata is free; execution, entitlement, delivery, and purchased output remain gated. Do NOT use for filtered discovery; use capability.search. Do NOT use for CrossingKey digital/service offers; use offers.list. For one exact capabilityId use capability.get. params: offset, limit |
commerce.quote | FREE MARKETPLACE PAYMENT QUOTE ONLY. After selecting an active marketplace capabilityId, return authoritative gross price, CrossingKey fee, provider share, and x402 v1/v2 payment requirements. A quote grants no entitlement and performs no execution. Do NOT use for first-party paid capabilities; use cost.estimate (first-party x402 capabilities have fixed catalog prices and no quote stage). Do NOT u params: capabilityId* |
creator.apply | FREE WRITE. Private creator intake for assets needing a capability model. No ownership transfer and AI training defaults false. params: provider*, summary* |
provider.describe | FREE read-only provider and commerce policy discovery. Use this before selecting an offer or capability. params: none |
offers.list | FREE read-only public offer and capability discovery. This tool never starts payment or execution. params: query, offset, limit |
requirements.check | FREE read-only requirements check. This tool never authorizes or starts payment or execution. params: item_id* |
cost.estimate | FREE read-only cost estimate. This tool never creates checkout, reserves funds, or contacts a facilitator. params: item_id* |
result.preview | FREE read-only result-shape preview. This tool never executes a capability or creates an entitlement or receipt. params: item_id* |
execution.preflight | FREE read-only execution preflight. Returns READY_FOR_HUMAN_AUTHORIZATION only; it never authorizes, purchases, settles, executes, or creates records. params: item_id* |
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 compatibility path. params: none |
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 PAYMENT-REQUIRED challenge and canonical paid execution endpoint. params: url* |
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 not spend funds; it returns the exact PAYMENT-REQUIRED challenge and canonical paid execution endpoint. params: tools* |
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 returns the exact PAYMENT-REQUIRED challenge and canonical paid execution endpoint. params: spec* |
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 PAYMENT-REQUIRED challenge and canonical paid execution endpoint. params: url* |
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 spend funds; it returns the exact PAYMENT-REQUIRED challenge and canonical paid execution endpoint. params: artifacts* |
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 not autonomously spend funds. params: text* |
secret.scan | PAID $0.01 USDC on Base via x402. Detects selected credential patterns and returns classifications and positions, not matched values. Heuristic, not comprehensive. Calling this MCP tool returns a payment challenge and does not autonomously spend funds. params: text* |
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 comprehensive. Calling this MCP tool returns a payment challenge and does not autonomously spend funds. params: text* |
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 payment challenge and does not autonomously spend funds. params: text* |
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 does not autonomously spend funds. params: text* |
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 is attempted by the audit. params: url* |
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, destination, amount, and receiver-only controls. params: url*, capability* |
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 and does not spend funds. params: idempotency_key*, raw_intake* |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.