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x402 List MCP

Find and vet x402 payment APIs before your agent pays one: uptime, price, on-chain volume.

Connector by x402-list.comOfficial · Domain verified by the MCP Registry

IndexedMITLocal (stdio)Remote (HTTP)★ 26
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Install

Works with Claude Code, VS Code, Codex, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/x402-list-com-x402-list-mcp

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

  • https://mcp.x402-list.com/mcp Remote (HTTP)

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About

Find and vet x402 payment APIs before your agent pays one: uptime, price, on-chain volume.

Use cases: payments-billing, crypto-web3

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
6 read · 1 write · 0 delete
Secrets
None asked for
Install scripts
None found
Runs as
Node.js package

Tools by what they do 7

From the running server's own tool list (tools/list) on Oct 25, 2026.

Read 6 · Look things up without changing anything.

  • x402_change_events
  • x402_check_health
  • x402_facilitator_volumes
  • x402_find_best_service
  • x402_get_service
  • x402_search_services

Write 1 · Create, change, send or run things.

  • x402_assess_services

Secrets and settings it asks for

Other settings (environment variables or headers).

  • X402_LIST_BASE_URL
  • X402_LIST_TIMEOUT_MS

Network hosts it talks to 1

  • mcp.x402-list.com · found in remote endpoint, install command

Tools (7)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • x402_assess_servicesAssess x402 services (paid)

    Call this when the free signals have run out: you hold 2 to 8 finalists from x402_search_services or x402_find_best_service, their stored fields do not separate them for YOUR stated need, and choosing wrong costs more than a quarter. It buys one fresh AI assessment reasoned against your question, not a cached grade; reading an already-computed assessment stays free via x402_get_service. Price: a one-time $0.25 USDC on Base, over two calls. Call once WITHOUT payment_signature_b64 to receive the x402 payment challenge verbatim (accepts[], amount, payTo, and a base64 PAYMENT-REQUIRED header); sig…

  • x402_change_eventsx402 service change eventsread-only

    Call this before you trust anything you cached about a service, and right after a payment failed for no obvious reason: the monitor's log of what moved under you. Returns payTo, price and 402-schema changes observed on listed services, most recent first, in exactly three event types (payto_changed, price_changed, schema_changed). Filter with service (the slug), type, and days (1 to 365, default 90). Caveats: prices here are atomic token amounts, never dollars, and every payTo is masked by design, so the feed reports THAT the payout address changed, never the address. Free and read-only.

  • x402_check_healthCheck x402 service healthread-only

    Call this before you send a payment, or right after a call unexpectedly failed: is this service up right now. With no slug, the directory snapshot: five status counts across the directory (include_services=true attaches every row). With a slug: that service's status, its 24h/7d/30d/90d uptime windows, response time, consecutive failures, daily snapshots. No money fields.

  • x402_facilitator_volumesx402 facilitator volumesread-only

    Call this when the question is about the rail rather than the service: which x402 facilitator actually settles money, and how much. Returns on-chain-verified settlement volume and transaction counts per facilitator for today (UTC), 7d, 30d and all-time, plus a verification flag ('on-chain' once volume has been observed on-chain, else 'listed'), across more than 30 facilitators. Optional daily timeseries (up to 90 days) and per-chain breakdown. Volume is decimal USD. Caveats: PER-FACILITATOR, never per-service; the *_24h fields cover today (UTC) so far, not a trailing 24 hours, and reset at 00:…

  • x402_find_best_serviceFind best x402 serviceread-only

    Call this when you have a need in words and want one service to call rather than a list to read: it is the free ranking step between searching and paying. Pass the need as q, plus any category, network, price cap or verification requirement, and get up to 20 ranked recommendations with the basis each one placed on. Ranking is mostly per-service reliability (live status, verification, uptime, response time), x402 compliance, and price in USD, with a small (about 10%) weight on measured on-chain settlement traction that can never dominate those three. The response carries ranking_version (curren…

  • x402_get_serviceGet x402 serviceread-only

    Call this once you hold a slug and are deciding whether to commit to that service: the full record behind a directory row. Live status, uptime over 24h/7d/30d/90d, average response time, networks and settlement asset, every priced endpoint, and the assessment block. When the live 402 of an endpoint asks to be paid at a different address than the listed pay_to and the change is still in review, the response carries top-level warnings and endpoints[].pay_to_divergence. include_series=true adds 90 daily points of on-chain volume and distinct buyers. Read the units map in the response: the per-end…

  • x402_search_servicesSearch x402 servicesread-only

    Your first call when you do not know which x402 service exists for a job: it narrows the directory of listed services to candidates. Filter by free-text query, category, network, live status, and whether the last observed 402 envelope is signable by a standard x402 client; sort by newest, uptime, cheapest, or endpoints. Returns up to 100 compact summaries a page: price in decimal USD, uptime, status, verification. Then x402_get_service for the full record.

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    Featured in

    Signals

    Stars
    26
    Forks
    0
    Open issues
    8
    Contributors
    2
    Last commit
    Oct 10, 2026 (18 days ago)
    Last release
    Oct 13, 2026 (15 days ago)

    From GitHub (fetched Oct 24, 2026).

    Details

    Registry name
    com.x402-list/x402-list-mcp
    Version
    0.5.3
    Auth
    Auth not stated
    Packages
    npm x402-list-mcp
    License
    MIT
    Repository
    github.com/mcccsm/x402-list-mcp
    Website
    x402-list.com
    First seen
    Oct 24, 2026
    Last checked
    Oct 24, 2026
    Source
    Official MCP Registrygithub-graphql
    Cite this page

    x402 List MCP. Agent Mart. https://agentmart.dev/connectors/x402-list-com-x402-list-mcp (last updated 2026-10-24)