tools.secondlayer/secondlayer

up checked 2026-11-11T00:38:36.741Z

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Publisher-provided title

secondlayer

Publisher-provided description

Stacks chain data: contracts, events, transfers, subgraph scaffolds. Hosted with browser sign-in.

Summary by lookupd

Query decoded Stacks blockchain data: contracts, events, transfers, blocks, and generate subgraph scaffolds from on-chain activity.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http secondlayer https://api.secondlayer.tools/mcp

Claude Code, npm package (stdio)

claude mcp add secondlayer -- npx -y @secondlayer/mcp

Codex, remote (streamable-http)

codex mcp add secondlayer --url https://api.secondlayer.tools/mcp

Codex, npm package (stdio)

codex mcp add secondlayer -- npx -y @secondlayer/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "secondlayer": {
      "url": "https://api.secondlayer.tools/mcp"
    }
  }
}

Cursor, npm package (stdio) → .cursor/mcp.json

{
  "mcpServers": {
    "secondlayer": {
      "command": "npx",
      "args": [
        "-y",
        "@secondlayer/mcp"
      ]
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (15 tools)

Publisher-provided text

• subgraphs_scaffold Generate a subgraph from observed print events when available; ABI token transfers or public functions only when the contract has never printed. Review the Type
• index_ft_transfers List decoded SIP-010 fungible-token transfers from Index. Reads are keyless.
• index_nft_transfers List decoded SIP-009 non-fungible-token transfers from Index. Reads are keyless.
• index_events List decoded chain events from the Index by event type. Use this for event types without a dedicated tool (stx_*, ft_mint/burn, nft_mint/burn, print), and for t
• index_contract_calls List decoded contract calls from the Index (function name, args, result). Set `trait` (e.g. sip-010) to match calls to all contracts conforming to a standard. N
• index_blocks List decoded blocks from Index. Reads are keyless.
• index_transactions List decoded transactions from Index. Filter by type, sender, or contract. Reads are keyless.
• index_print_schema Empirical per-topic print payload schemas for a contract, inferred from sampled on-chain events: each topic's fields with observed Clarity types, decoded TS typ
• index_discover Discover the Index vocabulary: every event type and its columns, allowed/equality filters, and required-non-null fields (and which types accept `trait`). Read t
• batch_query Run up to 10 public /v1 reads in one round trip (POST /v1/batch). Each item keeps its own auth/quota/pay-per-call semantics; results return in order with per-it
• streams_tip Current canonical chain tip as Streams sees it: block height/hash, burn height, finalized_height, lag_seconds, and the oldest seekable height/cursor for this ke
• streams_dumps List the Streams bulk parquet dumps manifest — coverage range, latest_finalized_cursor, and per-file metadata (block range, row count, size, sha256, signed URL)
• contracts_find Discover deployed Stacks contracts conforming to a trait (e.g. "sip-010", "sip-009", "sip-013"). The discovery endpoint for "which contracts implement X". Reads
• contracts_get_abi Fetch a single deployed contract's ABI from the registry (prod-safe). Returns the contract's metadata + full ABI (functions, maps, variables, fungible/non-fungi
• account_whoami Show the archive account email at api.secondlayer.tools, not the self-host instance.

Details

• Version: 11.6.6
• Transports: streamable-http, stdio
• Uptime (7 days): 100%
• Median latency: 705 ms
• First indexed: 2026-11-01T10:09:16.803Z
• Last seen in registry: 2026-11-09T20:17:31.416Z
• Repository: https://github.com/ryanwaits/secondlayer
• Website: https://www.secondlayer.tools/docs/mcp

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