# secondlayer (secondlayer.tools)

Indexes Stacks and Runes blocks into decoded rows and streams them via webhooks, with reorg-aware cursors and proofs back to Bitcoin.

- Atlas card: https://inite.ai/en/atlas/secondlayer.tools
- Site: https://secondlayer.tools
- For: developers building apps on Bitcoin and Stacks that cannot miss a block
- Use not measured/100 · alive 100/100

## Used for

- index Stacks and Runes history from the first block
- receive webhooks for chain events as they land
- query decoded contract state as typed tables

## Price

- from 5 USD/usage, free plan (read 2026-10-30 on https://secondlayer.tools/pricing)

## For developers

- MCP server: tools.secondlayer/secondlayer (namespace; auth on 2026-10-30)
- Read 2026-10-30

## MCP server, measured daily

Server: https://api.secondlayer.tools/mcp, checked every day since 2026-10-30 (5 checks).

- Answered: measuring, 5 daily checks so far
- Median first answer: 527 ms
- Sign-in: OAuth (the client signs the user in)
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-30

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Source: INITE Atlas, https://inite.ai/en/atlas/secondlayer.tools. JSON: https://inite.ai/api/atlas/secondlayer.tools. MCP: https://inite.ai/api/mcp (atlas_lookup).