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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "m2m-sentinel-sdk": {
      "type": "http",
      "url": "https://api.m2msentinel.com/mcp",
      "headers": {
        "x-api-key": "${X_API_KEY}",
        "PAYMENT-SIGNATURE": "${PAYMENT_SIGNATURE}"
      }
    }
  }
}

claude mcp add --transport http m2m-sentinel-sdk https://api.m2msentinel.com/mcp --header "x-api-key: ${X_API_KEY}" --header "PAYMENT-SIGNATURE: ${PAYMENT_SIGNATURE}"

[mcp_servers.m2m-sentinel-sdk]
url = "https://api.m2msentinel.com/mcp"
env_http_headers = { "x-api-key" = "X_API_KEY", "PAYMENT-SIGNATURE" = "PAYMENT_SIGNATURE" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "m2m-sentinel-sdk": {
      "type": "remote",
      "url": "https://api.m2msentinel.com/mcp",
      "enabled": true,
      "headers": {
        "x-api-key": "{env:X_API_KEY}",
        "PAYMENT-SIGNATURE": "{env:PAYMENT_SIGNATURE}"
      }
    }
  }
}

{
  "mcpServers": {
    "m2m-sentinel-sdk": {
      "type": "http",
      "url": "https://api.m2msentinel.com/mcp",
      "headers": {
        "x-api-key": "${X_API_KEY}",
        "PAYMENT-SIGNATURE": "${PAYMENT_SIGNATURE}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=m2m-sentinel-sdk&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXBpLm0ybXNlbnRpbmVsLmNvbS9tY3AiLCJoZWFkZXJzIjp7IngtYXBpLWtleSI6IiR7WF9BUElfS0VZfSIsIlBBWU1FTlQtU0lHTkFUVVJFIjoiJHtQQVlNRU5UX1NJR05BVFVSRX0ifX0%3D"
}

{
  "servers": {
    "m2m-sentinel-sdk": {
      "type": "http",
      "url": "https://api.m2msentinel.com/mcp",
      "headers": {
        "x-api-key": "${X_API_KEY}",
        "PAYMENT-SIGNATURE": "${PAYMENT_SIGNATURE}"
      }
    }
  }
}

{
  "mcpServers": {
    "m2m-sentinel-sdk": {
      "httpUrl": "https://api.m2msentinel.com/mcp",
      "headers": {
        "x-api-key": "${X_API_KEY}",
        "PAYMENT-SIGNATURE": "${PAYMENT_SIGNATURE}"
      }
    }
  }
}

extensions:
  "m2m-sentinel-sdk":
    enabled: true
    name: "m2m-sentinel-sdk"
    type: streamable_http
    uri: "https://api.m2msentinel.com/mcp"
    headers:
      "x-api-key": "${X_API_KEY}"
      "PAYMENT-SIGNATURE": "${PAYMENT_SIGNATURE}"
    timeout: 300

Placeholders to fill from your own secret store: ${X_API_KEY}, ${PAYMENT_SIGNATURE}. The registry never accepts secret values.

Quality 96 / 100strong

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 hygiene100 · 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.annotations6 of 6 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 785 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependencies100 · weight 15

pass
deps.known_vulnsno known advisory in 1 resolved packages
n/a
deps.mcp_sdk_versionthe official MCP SDK is not in the dependency graph
pass
deps.resolvable@m2msentinel/[email protected] resolved: 1 packages

6 tools, about 785 tokens to load them all · tool set cde65a84a869 · checked 2026-10-20 13:49 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

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 94 / 100

provenance90

liveness100

freshness85

hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-100% ~updated-44d-ago

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

Dependencies

@m2msentinel/[email protected] npm0 dependencies, resolved · advisories checked 2026-10-19

No known advisory affects this dependency graph.

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.m2msentinel.com/mcp` streamable-http	none	yes	100%	209 ms	2026-07-28	2026-10-20
`https://api.m2msentinel.com/sse` sse	api_key `${X_API_KEY}`	no (13 failures)	0%	–	–	–

package	registry	version	runtime	secrets
`@m2msentinel/sdk`	npm	1.2.5	–	`M2M_SENTINEL_API_KEY`

Tools (6)

`m2m_audit_contract`read-only	Inspect static bytecode capabilities (e.g. mint, pause, freeze, upgradeability slots), common proxy target resolution, and coverage index for a single Base contract address. Factual capability observation only, not a safety or exploitability guarantee. Distinguishable from m2m_get_service_status (infrastructure status) and legacy score-only endpoints.
`m2m_get_dex_liquidity`read-only	Fetch aggregate pool reserve, depth, and volume metrics across tracked Base DEX liquidity pools. Reports tracked-pool metrics only and does not filter by individual trading pair; contrast with m2m_get_token_price, which observes token spot prices.
`m2m_get_gas_metrics`read-only	Fetch current Base gas price in wei/gwei with RPC provenance for the upstream observation. Read-only telemetry; does not inspect contract code, return token/DEX pricing, or authorize or submit transactions.
`m2m_get_service_status`read-only	Fetch operational status, upstream Base RPC quorum status, and persistence availability for M2M Sentinel infrastructure. Does not return blockchain or market telemetry.
`m2m_get_token_price`read-only	Fetch the median Base DEX spot price in USD across up to five deepest indexed pools, with contract address, decimals, and pool provenance for one allowlisted token symbol (e.g. USDC, WETH, AERO). Does not return historical price series; contrast with m2m_get_dex_liquidity, which returns aggregate pool reserve depth rather than an asset price.
`m2m_get_whale_signals`read-only	Fetch up to 50 tracked recent high-value ERC-20 transfer signals on Base with transaction hashes, token/sender/receiver addresses, amounts, and valuation provenance. Observes large on-chain transfer events without query parameter limits; does not inspect contract bytecode or query DEX pricing.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.M2M-Sentinel/m2m-sentinel-sdk",
  "title": "M2M Sentinel",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://api.m2msentinel.com/mcp",
      "type": "streamable-http",
      "headers": [
        {
          "name": "x-api-key",
          "format": "string",
          "isSecret": true,
          "description": "Optional M2M Sentinel API key for prepaid access."
        },
        {
          "name": "PAYMENT-SIGNATURE",
          "format": "string",
          "isSecret": true,
          "description": "Optional x402 v2 payment signature when retrying a payable tool call."
        }
      ]
    },
    {
      "url": "https://api.m2msentinel.com/sse",
      "type": "sse",
      "headers": [
        {
          "name": "x-api-key",
          "format": "string",
          "isSecret": true,
          "description": "Optional M2M Sentinel API key for prepaid access."
        }
      ]
    }
  ],
  "version": "1.2.5",
  "packages": [
    {
      "version": "1.2.5",
      "transport": {
        "type": "stdio"
      },
      "identifier": "@m2msentinel/sdk",
      "registryType": "npm",
      "environmentVariables": [
        {
          "name": "M2M_SENTINEL_API_KEY",
          "format": "string",
          "isSecret": true,
          "description": "Optional M2M Sentinel API key for prepaid access."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/M2M-Sentinel/m2m-sentinel-sdk",
    "source": "github"
  },
  "websiteUrl": "https://m2msentinel.com",
  "description": "Base bytecode capability observations, proxy resolution, gas, DEX, and transfer telemetry."
}