io.github.xpayrcom/xpayr-mcp-server

XPayr Non-Custodial Crypto Gateway & AI Agent Commerce MCP

Is the XPayr Non-Custodial Crypto Gateway & AI Agent Commerce MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-10.

21 MCP tools for non-custodial crypto checkout, USDT/USDC links, webhooks, and AI agents.

alive probed 2026-11-15 · unchanged since 2026-11-10

21tools

4.6ktokens in Claude Opus 5.5

2.3 %of Claude's 200k window

1.8×the median server

40 msto initialize

2 msto list tools

Run it: npx -y @xpayr/mcp-server@1.0.0 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: @xpayr/mcp-server 1.0.0
Capabilities: prompts, resources, tools
Instructions: none
Of a 1M window: 0.5 % of a 1M context window
Count: 4.6k tokens in Claude Opus 5.5, exact, measured 2026-11-10. With the Claude Code prefix mcp__…__ on each tool name: 4.9k. The o200k_base estimate is 2.5k. Counted again when the tool definitions change. Method.
Repository: https://github.com/xpayrcom/xpayr-mcp-server
Website: https://xpayr.com/developers
Registry: active, updated 2026-11-09 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.87×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
xpayr_create_payment_session	872	467	19 %
xpayr_calculate_gateway_fee_and_split	405	217	9 %
xpayr_update_ai_agent_policy	392	210	9 %
xpayr_submit_agent_payment_intent	379	203	8 %
xpayr_list_payment_sessions	286	153	6 %

Other registry entries on npmjs.com, the ones next to this name; all of them.

SSH Host Storage & Remote Exec io.github.xlbbb-cn/mcp-ssh-exec-cmd · crashed on start
Ba-Zi.ai Chinese Astrology io.github.xlw-pro/chinese-astrology-skill · alive
io.github.xmtlzzz/dsh-any-agent · alive
io.github.xona-labs/xpay · alive
io.github.xpensiv-si/xpensiv · alive
io.github.xplormityai/searchdock-cli · alive
FO Semantic MCP io.github.xplusplusai/fo-semantic-mcp · alive
Perplexity Browser MCP io.github.xs1128/perplexity-browser-mcp · alive

Servers that mention xpayr or custodial or commerce.

GMPSignal Real-Time Intelligence MCP io.github.xpayrcom/gmpsignal-mcp · alive
Agentic Shelf ai.agenticshelf/mcp · server error
Boolsai Directory ai.boolsai/directory · no DNS
Bezal — Local Business Intelligence for AI Agents ai.bezal/local-commerce · alive
InstantClips ai.instantclips/instantclips · alive
Kifly — Agentic Commerce & Payments ai.kifly/mcp · alive
MerchantFlow ai.merchantflow/mcp · needs auth
Nexez Agentic Commerce ai.nexez/commerce · alive

The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.