Esplora MCP server

by mrfentmen·io.github.mrfentmen/esplora-mcp·v1.0.5

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Keyless MCP server for Esplora Bitcoin data: blocks, fees, transactions, addresses.

A89/100grade A

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Safety scan

A89/100

full report

Adoption

Growing

0 stars300 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Esplora tools (10)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

difficulty_adjustment
Current Bitcoin mining difficulty adjustment progress and projected retarget from mempool.space.
fee_estimates
Fee estimates in sat/vB plus mempool stats.
get_address
Address balance, tx count, pending mempool txs.
get_block
Block by height or hash: time, tx count, size.
get_tx
Transaction: confirmation, fee, outputs total.
health_check
Check if the server is running and responsive.
recent_blocks
The most recently mined Bitcoin blocks from a given height: hash, timestamp, transaction count, size and merkle root.
recent_mempool
Transactions most recently accepted into the Bitcoin mempool, with value, fee and fee rate in sat/vB.
tip_height
Current Bitcoin block height. Set ESPLORA_URL for other instances/networks.
version_info
Get server version and metadata.

Public scan report

scanner v0.1.10 · 2026-11-01 · same rubric, same numbers if you re-run it

no findings

Code scan9 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 0 days ago15/15
Maintainer identityregistry namespace matches repository owner6/10

Overall 89/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

How Esplora compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 89/100; higher than 80% of 48,255 servers
Tools: 10; the typical server has 7
Tools that change things: 0%; typical: 0%. Fewer write tools means less an agent can break
Downloads a week: 300; more than 81% of 12,191 servers with a package

What its tools let an agent do: 10 read

Release history: 2 versions in the registry since 2026-09-22, latest 2026-10-27, typically one every 35 days.

Install Esplora in Claude Code, Cursor or VS Code

Runs npx -y esplora-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add esplora-mcp -- npx -y esplora-mcp

Add to Cursor

What the publisher says

From the Esplora repository's README, as published. We do not edit it. Read it on GitHub

Awesome MCPs

A monorepo of MCP servers from the mrfentmen account and local workspace.

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Browser extensions are maintained separately in private repositories and are intentionally not included here.

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Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Esplora: common questions

Is Esplora MCP server safe?: Yes, by our scan: it is graded A (89/100). Read the Esplora safety report
How do I install Esplora?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Esplora need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Esplora maintained?: The last commit was 3 days ago (2026-11-01). The latest release is v1.0.5.
How does Esplora compare with other MCP servers?: safety score 89/100 (higher than 80% of 48,255 servers); tools 10 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.