Cryo MCP Server
MCP wrapper around Cryo, the Rust/Python Ethereum data-extraction tool, for bulk block/trace/log queries plus SQL.
- Sato Score47
- ChainsEthereum
Cryo MCP Server is an open-source data tool on Ethereum, with last code activity on 2025-03-10 (Dormant). Sato Score 47/100 (how open, active and verifiable it is, not a safety grade), as of 2026-10-21. How the score works →
See how to install Cryo MCP Server →Last commit Mar 10, 2025 · ★ 91
Listed from github.com/z80dev/cryo-mcp on 2026-07-19. Install: not attempted. Evidence →
Next step
Watch Cryo MCP Server
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Claim this listing →Overview
Cryo MCP Server exposes Paradigm's Cryo — a widely used Ethereum data-extraction tool — through MCP, letting agents pull blocks, transactions, traces, and logs as structured datasets rather than one-off balance or price lookups. It adds SQL query support via DuckDB and integrates directly with Claude Code, aimed at bulk on-chain data analysis rather than live wallet actions.
Sato Score
47/100· MediumHow open, active & verifiable — not a safety or returns grade.
- Maintenance & liveness
- 20/35
- Code transparency
- 18/20
- Interface verifiability
- 0/10
- Docs & demo
- 0/10
- Listing transparency & provenance
- 6/15
- Independent verification
- 3/10
Sato Check
v0.1.5 · as of 2026-09-29- Does it take your key?
- No key read found
- Does your key leave?
- Not yet run
- Can it move funds on its own?
- Unknown
A profile describes what we read and ran, with dates. It is not a safety rating, an audit or an endorsement, and "not found" is not "not there".
Evidence — listed vs checked · what the words mean
Listed from github.com/z80dev/cryo-mcp on 2026-07-19. Install: not attempted.
| Claim | Value | Evidence | Source | Checked |
|---|---|---|---|---|
| Chains supported | Ethereum | self-reported | github.com/z80dev/cryo-mcp | as of 2026-10-21 |
| Verification status | Unverified — not independently reviewed | self-reported | github.com/z80dev/cryo-mcp | as of 2026-10-21 |
| Recent activity | last commit 2025-03-10 | observed | github.com/z80dev/cryo-mcp | 2026-10-21 |
| Install works | documented by the project, not run by Sato Hubnot attempted: no falsifiable install+entry probe from deploy_spec | self-reported | github.com/z80dev/cryo-mcp | as of 2026-09-14 |
| Website answers | answered (HTTP 200) | observed | github.com/z80dev/cryo-mcp | 2026-10-21 |
| Daily check record | 90 of 90 daily checks since 2026-07-23 succeededa success rate of our checks, not uptime; the source is this listing's own history | observed | — | 2026-10-20 |
| Takes your key | no private-key read found in what we read | traced | satohub.ai | 2026-09-29 |
| Key leaves the machine | not yet run with planted test keysthe sandbox lane has not run on this version | observed | satohub.ai | not dated |
| Moves funds on its own | unknown — could not read what it exposes | traced | satohub.ai | 2026-09-29 |
| Sato Score | 47/100 (Medium)how open, active and verifiable — not a safety or quality grade | computed | satohub.ai | 2026-10-21 |
Self-reported rows are the project’s own words, dated when we recorded them — not a check. Only reproduced and reviewed rows carry a mark. None of these rows is a safety or quality rating.
Install — not run by us — no falsifiable install+entry probe from deploy_spec
Runtime: Python 3.8+ (uv/uvx), requires a working cryo install + DuckDB
uv tool install cryo-mcp claude mcp add (interactive) — command: uvx, args: cryo-mcp --rpc-url <ETH_RPC_URL> [--data-dir <DATA_DIR>]
You supply: ETH_RPC_URL (required if not passed via --rpc-url, Ethereum RPC endpoint), CRYO_DATA_DIR (optional, default download directory ~/.cryo-mcp/data/)
MCP invocation: uvx cryo-mcp --rpc-url <ETH_RPC_URL> (stdio)
Read from the project’s own docs as of 2026-09-14. What a deploy spec is →
Observed record — 91 daily checks since 2026-07-23
- Succeeded
- 91
- Failed
- 0
- Their error
- 0
- Unattributed
- 0
This is the share of our daily checks that succeeded — not an availability guarantee. A check can fail because the host was down, because our runner timed out, or because the network in between dropped it, and only the first of those is a fact about this project. Failures are split by what we can attribute; anything we cannot attribute is counted, not hidden. 40 of these checks predate 2026-09-01, when the probe counted a bot-block (HTTP 403) as a failure and recorded no reason for any failure. Every one of them passed, so the rate covers them too.
Last 30 days — to 2026-10-21, one point per UTC day
A gap is a day we have no attributable observation — never a zero. Thirty points is the whole shape the free layer carries; the daily rows behind it stay in the snapshot series.
Details
- Chains
- Ethereum
- Agent types
- MCP server
- Open source
- Yes
- Last checked
- 2026-10-21
Marketplace Signals
No marketplace signals recorded for this resource yet.
Verification status reflects evidence reviewed by Sato Hub. Self-reported claims are never presented as verified.
Where Cryo MCP Server fits
Related concepts: What Are MCPs? The Standard Way to Give Agents Tools, What Are Onchain Agents?
Listing History
Recorded changes to Cryo MCP Server's listing — status, verification, Sato Score, and recent releases. Full history is kept in the listing record.
- Jul 24, 2026Sato Hub began tracking this listing
- Jul 20, 2026Edited: deploy spec
- Jul 19, 2026Listed on Sato Hub
Compared with
Appears in
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Reference
QuestionsWhat people ask about this pageShowHide
Questions people ask about Cryo MCP Server
- Is Cryo MCP Server open source?
- Yes. Cryo MCP Server is open source under the MIT license; the repository is https://github.com/z80dev/cryo-mcp. Checked as of 2026-10-21.
- Which chains does Cryo MCP Server support?
- Cryo MCP Server lists support for Ethereum as of 2026-10-21.
- Is Cryo MCP Server still maintained?
- The most recent code activity Sato Hub observed was on 2025-03-10 (last commit 2025-03-10), which Sato Hub labels "Dormant". Posts on X are not counted as maintenance. Activity is a recency signal, not a quality judgment.
- How do I install or run Cryo MCP Server?
- Python 3.8+ (uv/uvx), requires a working cryo install + DuckDB. Install: uv tool install cryo-mcp. Entry: claude mcp add (interactive) — command: uvx, args: cryo-mcp --rpc-url <ETH_RPC_URL> [--data-dir <DATA_DIR>]. This is taken from the project's own documentation and has not been reproduced by Sato Hub. It runs as an MCP server (uvx cryo-mcp --rpc-url <ETH_RPC_URL> (stdio)).
- Is Cryo MCP Server verified on Sato Hub?
- No independent verification is on record for Cryo MCP Server; its verification status is "Unverified" and its Sato Score is 47 of 100. Self-reported is not verified, and the score is not a safety, quality or returns grade.
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Cite this page
Sato Hub. "Cryo MCP Server — Sato Hub." Sato Hub, updated 2026-10-21, accessed 2026-10-21. https://satohub.ai/resources/cryo-mcpData last refreshed 2026-10-21; this page is rebuilt daily. Citations carry the date so a reader can tell which snapshot a claim came from. Catalog data is licensed CC-BY-4.0.
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