Koskamo

Superstables MCP

An official MCP server provided by Superstables that allows AI agents to search a service catalogue for those advertising stablecoin payments, retrieve specific service details including liveness probes, and access ecosystem census statistics. It operates on testnets and requires no authentication.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Superstables MCP logo, by SuperstablesVendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-07Operated by Superstables
MCP endpoint (Streamable HTTP)
https://www.superstables.com/api/mcp
Vendor documentation

What its tools do

3 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (3)

3 of 3 have a description · 3 of 3 declare behavior hints · 2 of 3 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Passed Official MCP Registry namespace is tied to superstables.com ·
  • Passed Endpoint is on the registry namespace domain ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Find services advertising programmatic stablecoin payments
  • Retrieve specific service details and liveness probe history
  • Get census numbers on the agent-payments ecosystem

Source and maintenance

Vendor evidenceRegistry 1.0.0
mcp-registry: com.superstables/superstables@1.0.0Project website

Protocol and capabilities

Server
superstables 1.0.0
MCP protocol negotiated in check
2025-11-25
Tools
3 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Superstables is a read-only index of services advertising stablecoin payments over x402 and MPP, with HTTP endpoints probed for payment-challenge signals. Use find_services to search by free text, category, rail, chain, asset, environment (mainnet or testnet) or liveness; get_service for one record with its last 20 liveness probes; get_stats for census counts. live=true means the endpoint returned HTTP 402 or a detected payment-challenge signal at its last unpaid probe; it does not establish payment compatibility, settlement, delivery or output quality. null means not checked: not probed yet, or not an HTTP endpoint. This server never executes payments and requires no authentication. Soft advisory limit: 300 requests per minute per client. get_service includes paginated advertised endpoints. Pass resources.next_after as resources_after to read the next page. The service's probes and payment_terms describe its selected endpoint; other listed endpoints have not been checked individually.

Tools

3 advertised

find_services — Find payable services
Advertised by the server during the last successful anonymous check.
Advertised read-only

Find services advertising stablecoin payments over x402 or MPP. HTTP endpoints are probed; live=true means the endpoint returned HTTP 402 or a detected payment-challenge signal at its last unpaid probe.

find_services input schema
{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "q": {
      "type": "string",
      "description": "Free-text search over name, title, tags, listing category, description and endpoint"
    },
    "rail": {
      "enum": [
        "x402",
        "mpp",
        "acp"
      ],
      "type": "string"
    },
    "asset": {
      "type": "string",
      "description": "USDC, EURC, USDT, PYUSD"
    },
    "chain": {
      "type": "string",
      "description": "base, solana, tempo, ethereum, polygon, ..."
    },
    "limit": {
      "type": "integer",
      "maximum": 100,
      "minimum": 1
    },
    "category": {
      "enum": [
        "data",
        "crypto",
        "trading",
        "search",
        "inference",
        "media",
        "social",
        "infra",
        "security",
        "crypto-data",
        "finance",
        "business",
        "records",
        "health",
        "world",
        "ai",
        "dev",
        "documents",
        "agents",
        "tests"
      ],
      "type": "string",
      "description": "A top-level category (data, crypto, trading, search, inference, media, social, infra, security) or a subcategory, such as crypto-data or finance"
    },
    "live_only": {
      "type": "boolean",
      "description": "Only services whose last probe detected a payment challenge"
    },
    "environment": {
      "enum": [
        "mainnet",
        "testnet",
        "mixed",
        "unknown"
      ],
      "type": "string",
      "description": "mainnet, testnet, mixed (offers both) or unknown: from the networks its last payment challenge offered, else its listed chains"
    }
  }
}
find_services annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "destructiveHint": false
}
get_service — Get one service
Advertised by the server during the last successful anonymous check.
Advertised read-only

Full record for one service by id (the slug shown by find_services), including its last 20 liveness probes and a page of advertised endpoints.

get_service input schema
{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "description": "Service id, e.g. 10x402.com"
    },
    "resources_after": {
      "type": "string",
      "pattern": "^[a-f0-9]{64}$",
      "maxLength": 64,
      "minLength": 64,
      "description": "Cursor from resources.next_after; omit for the first page"
    },
    "resources_limit": {
      "type": "integer",
      "maximum": 100,
      "minimum": 1,
      "description": "Endpoints per page, from 1 to 100; defaults to 25"
    }
  }
}
get_service annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "destructiveHint": false
}
get_stats — Index census
Advertised by the server during the last successful anonymous check.
Advertised read-only

Census counts for the whole index, or for one rail: total services, how many were live at their last probe, dual-rail count, rails covered.

get_stats input schema
{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "rail": {
      "enum": [
        "x402",
        "mpp",
        "acp"
      ],
      "type": "string",
      "description": "Restrict the counts to services listed on this rail; omit for the whole index"
    }
  }
}
get_stats annotations
{
  "readOnlyHint": true,
  "openWorldHint": false,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
747 ms
95th percentile latency
747 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 747 ms · metadata changed · 3 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http superstables-mcp https://www.superstables.com/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add superstables-mcp --url https://www.superstables.com/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable superstables-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "superstables-mcp": {
      "url": "https://www.superstables.com/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "superstables-mcp": {
      "type": "streamableHttp",
      "url": "https://www.superstables.com/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start superstables-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "superstables-mcp": {
      "type": "http",
      "url": "https://www.superstables.com/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http superstables-mcp https://www.superstables.com/api/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://www.superstables.com/api/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "superstables-mcp": {
      "serverUrl": "https://www.superstables.com/api/mcp"
    }
  }
}

Let your agent find its tools

Find servers like Superstables MCP from your agent. Add Koskamo once to search the index for endpoints, access requirements, and client setup. Public discovery needs no key.

Connect Koskamo Explore workflows
See all 1,685

Do you run Superstables MCP?

Prove ownership with a DNS record, a well-known file, or your Official MCP Registry entry, and your edits publish immediately. Proofs are re-checked weekly; admins can still hide or remove a listing.

Claim this listing