CrossingKey MCP

com.crossingkeyintelligence由 crossingkeyintelligence.com 发布官方发布者v3.0.1更新于 Nov 1, 2026

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

已验证Streamable HTTP可网页运行金融开发者工具商业与电商

概览

AI 生成的概览

远程 MCP，提供受治理的机器商务市场：免费发现与报价，以及以 Base 上 USDC 结算的付费 x402 审计与校验工具。

可以做什么
  • 发现服务提供方、市场政策、报价、能力与目录，支持带筛选搜索和分页浏览
  • 检查需求、估算成本、预览结果形态，并执行在付款前停止的执行预检
  • 获取付款报价，包含总价、费用分成与 x402 付款要求
  • 提交服务提供方与创作者申请，读取公开的服务提供方与能力元数据
  • 运行付费审计与工具：x402 兼容性、MCP schema、OpenAPI 质量、机器商务就绪度、上线与购买路径审计、制品完整性清单、哈希、密钥与个人数据扫描、JSON 修复、提示词评分与 XKEY 校验
适用场景
适合需要让助手浏览付费能力市场、在承诺前比较价格与要求，或对 MCP 端点、OpenAPI 文档、x402 付款路径和文本制品执行固定价格审计的场景。
运行要求
需要远程 Streamable HTTP 端点；未声明本地包、账号或 API 密钥。付费工具通过 x402 以 Base 主网 USDC 计价，使用这些工具需要买方付款途径与人工授权。需要能访问该公开端点。
安装前请注意
有 13 个付费工具，价格从 0.01 到 19.00 USDC（Base）；调用只返回付款挑战而不直接扣款，但完成付款会真实花费资金。服务提供方与创作者申请工具是公开写入接口。扫描为启发式、并不全面，JSON 修复可能回传所提供的内容。不要发送私钥、助记词或机密；卖方钱包为仅接收，代理不具备签名权限。

安装

在 SourceWeft 中

  1. 打开 控制台中的 CrossingKey MCP，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。

交给智能体安装

把这段提示词粘贴到 Claude Code、Codex、Cursor 等智能体，或 SourceWeft 对话中。智能体会读取该服务器的安装指南，先向你展示发布者、端点和登录方式，经你同意后再把它添加到你的客户端。密钥不会写进任何命令。

阅读 https://sourceweft.com/mcp/com.crossingkeyintelligence%2Fcrossingkey-mcp/install.md，并按其中说明把这个 MCP 服务器接入我的客户端。修改任何配置之前，先告诉我它的发布者、端点和登录方式，等我确认。不要把 API 密钥写进命令或我会提交的文件；问我密钥应从哪里获取。

查看智能体所依据的安装指南

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

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

README

CrossingKey MCP

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

Production

Endpoint

https://mcp.crossingkeyintelligence.com/mcp

Canonical identity

com.crossingkeyintelligence/crossingkey-mcp

Stable source target

5.0.1 — the exact dependency-hardening source being prepared for promotion.

Current public runtime before host cutover

5.0.0 — the current public runtime before the v5.0.1 host cutover.

Promotion state

The source is being prepared as patch release 5.0.1. The host-side restart and GitHub release/tag are performed only after the running process is verified against this exact source.

Public verification

  • Cloudflare Tunnel crossingkey-mcp is healthy.
  • mcp.crossingkeyintelligence.com routes to the V5 origin on 127.0.0.1:3401.
  • Public discovery reports V5, Streamable HTTP, and Base mainnet eip155:8453.
  • No live payment or Base settlement is implied by discovery metadata alone.

This repository is the source of truth for the v5.0.1 candidate. Runtime deployment and release tagging are tracked separately.

Public documentation

Transport

MCP Streamable HTTP

CrossingKey MCP v5.0.1

CrossingKey MCP is a governed machine-commerce interface for AI agents and authorized software clients.

The stable source preserves the existing anonymous MCP surface and adds the two authorized v4 paid audits. The exact live/public tool count remains a deployment-time verification item.

  • 7 free discovery and commercial-navigation tools
  • 8 public marketplace tools
  • 13 direct x402 paid tools plus a separately named legacy credit-redemption compatibility tool for existing customers

Authenticated sessions additionally expose verification and role-gated marketplace operations.

The operating principle is:

Discovery is free. Evaluation is safe. Payment is explicit. Authority stays bounded. Execution is deterministic. Fulfillment is verifiable.

Free discovery

These seven tools can be used anonymously to understand the provider, available offers, requirements, price, expected result, authorization state, and prepaid-credit options without spending money:

  • provider.describe
  • offers.list
  • requirements.check
  • cost.estimate
  • result.preview
  • execution.preflight
  • credits.options (legacy compatibility status; new credit sales are disabled)

The normal discovery sequence is:

text
provider.describe→ offers.list→ requirements.check→ cost.estimate→ result.preview→ execution.preflight→ credits.options (legacy compatibility status; new credit sales are disabled)

A valid commercial flow may reach:

text
READY_FOR_HUMAN_AUTHORIZATION

and then stop at:

text
STOPPED_BEFORE_PAYMENT

until the required buyer authorization and payment conditions are satisfied.

Public marketplace discovery

The preserved anonymous marketplace surface also exposes:

  • marketplace.describe
  • provider.register
  • provider.get
  • capability.get
  • capability.search
  • catalog.list
  • commerce.quote
  • creator.apply

Discovery, catalog browsing, capability inspection, and quoting do not themselves authorize paid execution.

provider.register and creator.apply are public write surfaces for application and intake workflows. They do not grant unrestricted commercial authority.

Paid and gated execution

These 13 tools perform valuable computation, validation, or artifact generation and use direct x402 payment:

  • x402.compatibility_audit
  • mcp.schema_audit
  • openapi.quality_audit
  • machine_commerce.readiness_audit
  • artifact.integrity_manifest
  • xkey.validate

Current v4 paid capabilities use exact x402 Base USDC payments. Historical prepaid credit balances remain redeemable only through the separately named legacy compatibility path; v4 does not sell new credit packs.

Free discovery does not consume paid execution credits.

Authenticated verification

Authenticated sessions can expose read-only verification tools including:

  • approval.verify
  • idempotency.inspect
  • receipt.verify
  • entitlement.inspect

Marketplace sessions may additionally expose role-gated job, receipt, purchase, provider, capability, and settlement operations.

Approval minting remains a local operator action and is not exposed over MCP.

Commercial flow

The governed machine-commerce path is:

text
discover→ inspect requirements→ estimate cost→ preview result→ preflight→ authorize→ pay→ verify settlement→ execute→ issue result→ bind entitlement→ issue verifiable receipt

Payment alone does not create unrestricted authority.

Authorization, payment verification, execution, fulfillment, entitlement creation, and receipt generation remain separate governed stages.

Human authorization

CrossingKey does not treat an LLM-supplied boolean such as approved: true as buyer authorization.

Where human authorization is required, approval is bound to the relevant commercial context, including the buyer, capability, inputs, quote, idempotency state, and expiration conditions.

Paid execution does not occur merely because an agent asks for it.

MCP resources

The candidate preserves the public MCP resources for agent comprehension:

  • crossingkey://discovery-guide
  • crossingkey://commerce-policy
  • crossingkey://capability/{name}

These describe the free discovery sequence, commerce policy, and per-capability instructions.

Machine commerce

CrossingKey supports governed machine-payment infrastructure including:

  • x402 v1
  • x402 v2
  • Base USDC
  • historical prepaid request credits through a separately named compatibility path only
  • settlement verification
  • entitlements
  • result-bound receipts
  • idempotent execution
  • replay protection

The CrossingKey seller wallet boundary is receiver-only.

Agents are not granted unrestricted wallet signing, sending, swapping, bridging, or autonomous seller-spend authority.

Security properties

The production design includes:

  • bounded input validation
  • strict capability schemas
  • SSRF protections
  • DNS and address validation
  • response-size controls
  • authorization boundaries
  • approval binding
  • idempotency protection
  • payment replay protection
  • duplicate-settlement protection
  • deterministic result hashing
  • entitlement binding
  • receipt verification
  • receiver-only seller wallet policy
  • explicit uncertain-settlement handling

No private keys, wallet secrets, Stripe secrets, API keys, seed phrases, mnemonics, or private customer information belong in this repository.

Agent discovery

Recommended entry point:

provider.describe

Canonical MCP endpoint:

https://mcp.crossingkeyintelligence.com/mcp

Canonical identity:

com.crossingkeyintelligence/crossingkey-mcp

Official MCP Registry identity:

com.crossingkeyintelligence/crossingkey-mcp

Website:

https://www.crossingkeyintelligence.com

CrossingKey Intelligence

Operating online under the handle crossingkey_.

intelligence is the standard.

来源：README.md，提交 f907add

工具

28

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.

无需输入参数。

provider.apply

FREE public application intake. Always pending, never creates credentials or active capabilities.

输入参数slug必填contact必填websitedescription必填displayName必填

provider.get

FREE. Public active provider metadata. Pending applications require owner or administrator authorization.

输入参数providerId必填

capability.get

FREE. Use name for legacy deterministic capability metadata or capabilityId for public marketplace metadata, rights and provenance.

输入参数namecapabilityId

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.

输入参数limitoffset

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 use for generic price lookup; use cost.estimate. Paid marketplace execution requires capability.purchase with authorization and verified payment.

输入参数capabilityId必填

creator.apply

FREE WRITE. Private creator intake for assets needing a capability model. No ownership transfer and AI training defaults false.

输入参数summary必填provider必填

provider.describe

FREE read-only provider and commerce policy discovery. Use this before selecting an offer or capability.

无需输入参数。

offers.list

FREE read-only public offer and capability discovery. This tool never starts payment or execution.

输入参数limitqueryoffset

requirements.check

FREE read-only requirements check. This tool never authorizes or starts payment or execution.

输入参数item_id必填

cost.estimate

FREE read-only cost estimate. This tool never creates checkout, reserves funds, or contacts a facilitator.

输入参数item_id必填

result.preview

FREE read-only result-shape preview. This tool never executes a capability or creates an entitlement or receipt.

输入参数item_id必填

execution.preflight

FREE read-only execution preflight. Returns READY_FOR_HUMAN_AUTHORIZATION only; it never authorizes, purchases, settles, executes, or creates records.

输入参数item_id必填

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.

无需输入参数。

x402.compatibility_audit

Purchase 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.

输入参数url必填

mcp.schema_audit

Purchase 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.

输入参数tools必填

openapi.quality_audit

Purchase 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.

输入参数spec必填

machine_commerce.readiness_audit

Purchase 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.

输入参数url必填

artifact.integrity_manifest

Purchase 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.

输入参数artifacts必填

hash.encode

Purchase SHA-256 Text Hash

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.

输入参数text必填

secret.scan

Purchase Secret Pattern 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.

输入参数text必填

pii.scan

Purchase PII Pattern 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.

输入参数text必填

json.repair

Purchase Conservative 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.

输入参数text必填

prompt.audit

Purchase Prompt Heuristic 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.

输入参数text必填

mcp.launch_audit

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.

输入参数url必填

x402.purchase_path_audit

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.

输入参数url必填capability必填

xkey.validate

XKEY Intake Validation

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.

输入参数raw_intake必填idempotency_key必填

版本历史

3
  1. v3.0.1最新Oct 11, 2026
  2. v3.0.0Sep 29, 2026
  3. v2.3.0Sep 16, 2026

评分

已满足适用检查项的 90%

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  • 描述必需15 分
  • 图标10 分
  • 文档15 分
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