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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "base-buzz": {
      "type": "http",
      "url": "https://api.paystage.xyz/mcp"
    }
  }
}

claude mcp add --transport http base-buzz https://api.paystage.xyz/mcp

[mcp_servers.base-buzz]
url = "https://api.paystage.xyz/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "base-buzz": {
      "type": "remote",
      "url": "https://api.paystage.xyz/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "base-buzz": {
      "type": "http",
      "url": "https://api.paystage.xyz/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=base-buzz&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXBpLnBheXN0YWdlLnh5ei9tY3AifQ%3D%3D"
}

{
  "servers": {
    "base-buzz": {
      "type": "http",
      "url": "https://api.paystage.xyz/mcp"
    }
  }
}

{
  "mcpServers": {
    "base-buzz": {
      "httpUrl": "https://api.paystage.xyz/mcp"
    }
  }
}

extensions:
  "base-buzz":
    enabled: true
    name: "base-buzz"
    type: streamable_http
    uri: "https://api.paystage.xyz/mcp"
    timeout: 300

Quality 88 / 100new

protocol88 · weight 25

pass
protocol.modernsupports 2026-07-28 (server/discover)
pass
protocol.statelessanswers without a session
pass
protocol.transportstreamable HTTP
warn
protocol.list_ttltools/list declares ttlMs 0, so clients re-fetch it on every use

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene88 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations9 of 9 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: evaluate_mcp_payment (idempotentHint); list_outstanding_auths (idempotentHint); evaluate_outstanding_auths (idempotentHint); …
pass
tools.token_costabout 1,449 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump
pass
tools.hidden_textno hidden text in tool names, descriptions, schemas or annotations

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pull, stability.new_linkstool history recorded for 1 of the 7 days needed

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvabledeps.dev does not know @paystage/[email protected]

9 tools, about 1,449 tokens to load them all · tool set e295ddfa37b4 · tools last changed 2026-11-14 · checked 2026-11-14 07:36 UTC

Tool changes

2026-11-14evaluate_batchadded
Evaluate several payment challenges against one policy in a single call. Returns one verdict per input, in order, so an agent settling a batch decides once per payment and can stop at the first refusal.
2026-11-14validate_policyadded
Check a policy document without evaluating a payment. Returns the exact validation error when it is wrong, which is the question behind most support requests.
2026-11-14decode_payment_requiredadded
Decode a base64 `payment-required` header from a 402 response into the JSON challenge, so an agent can inspect it before deciding anything.
2026-11-14verify_receiptadded
Verify a PayStage receipt against the published signing key. Returns the verdict it attests to, or why it cannot be trusted.
2026-11-14evaluate_velocityadded
Rolling-window rate and spend-pattern check for a proposed payment against recent action history and a policy.velocity config
2026-11-14evaluate_hip3_tradeaddednew site: trade.xyz
Evaluate a Hyperliquid HIP-3 (trade.xyz) order against a TradePolicy before an agent trades. Returns decision allow | review | do_not_trade.
2026-11-14evaluate_outstanding_authsadded
List and evaluate outstanding token authorizations against a policy
2026-11-14list_outstanding_authsadded
List outstanding token authorizations for a wallet
2026-11-14evaluate_mcp_paymentchangeddescription, input schema, annotationsmeaning changed
before
Decide whether an x402 payment should be signed, against a policy. Returns pay, review or do_not_pay with the rule that fired.
after · 17% of words in common
Evaluate an x402 PaymentRequired payload against a PayStage spending policy before paying

Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 93 / 100

duplicate-repo

provenance90

liveness100

freshness100

hygiene80

+repository +namespace-matches-repo +website +reachable +uptime-100% +updated-2d-ago -duplicate-repo(6 names)

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

@paystage/[email protected] npmthis version is not known to the dependency resolver

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://api.paystage.xyz/mcp` streamable-http	none	yes	100%	774 ms	2026-07-28	2026-11-14

package	registry	version	runtime	secrets
`@paystage/mcp`	npm	0.3.5	–

Tools (9)

`decode_payment_required`read-only	Decode a base64 `payment-required` header from a 402 response into the JSON challenge, so an agent can inspect it before deciding anything.
`evaluate_batch`read-only	Evaluate several payment challenges against one policy in a single call. Returns one verdict per input, in order, so an agent settling a batch decides once per payment and can stop at the first refusal.
`evaluate_hip3_trade`read-only	Evaluate a Hyperliquid HIP-3 (trade.xyz) order against a TradePolicy before an agent trades. Returns decision allow \| review \| do_not_trade.
`evaluate_mcp_payment`read-only	Evaluate an x402 PaymentRequired payload against a PayStage spending policy before paying
`evaluate_outstanding_auths`read-only	List and evaluate outstanding token authorizations against a policy
`evaluate_velocity`read-only	Rolling-window rate and spend-pattern check for a proposed payment against recent action history and a policy.velocity config
`list_outstanding_auths`read-only	List outstanding token authorizations for a wallet
`validate_policy`read-only	Check a policy document without evaluating a payment. Returns the exact validation error when it is wrong, which is the question behind most support requests.
`verify_receipt`read-only	Verify a PayStage receipt against the published signing key. Returns the verdict it attests to, or why it cannot be trusted.

Schemas: list_tools.

Also listed as

5 other active names share this repository: io.github.base-buzz/preflight, xyz.paystage/auth-watch, xyz.paystage/mcp, xyz.paystage/preflight, xyz.paystage/trade-preflight

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Official server.json

{
  "name": "io.github.base-buzz/mcp",
  "title": "PayStage",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://api.paystage.xyz/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.3.5",
  "packages": [
    {
      "version": "0.3.5",
      "transport": {
        "type": "stdio"
      },
      "identifier": "@paystage/mcp",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "PAYSTAGE_POLICY_PATH",
          "description": "Path to policy.json spending rules"
        },
        {
          "name": "PAYSTAGE_RPC_URL",
          "description": "Base RPC URL override"
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/base-buzz/paystage",
    "source": "github",
    "subfolder": "packages/mcp"
  },
  "websiteUrl": "https://paystage.xyz",
  "description": "Umbrella MCP: payment preflight, auth watch, HIP-3 trade preflight, velocity checks"
}