Sei MCP
Official Sei MCP: wallet/account management, SEI transfers, and ERC20/721/1155 token operations.
- Sato Score56
- ChainsSei
Sei MCP is an open-source MCP server by Sei Protocol on Sei, with no code activity tracked. Sato Score 56/100 (how open, active and verifiable it is, not a safety grade), as of 2026-10-15. How the score works →
See how to install Sei MCP →No code activity tracked
Listed from sei.io on 2026-07-13. Install: reproduced by Sato Hub on 2026-09-21. Evidence →
Next step
Check it from your agent
Add Sato Hub’s MCP server (no key), then ask:
https://satohub.ai/api/mcpAsk Sato Hub what is on record about Sei MCP before I use it.Your project?
Prove you control the domain and correct this page — description, links, tags, chains. A claim proves control, not verification: it never changes the Sato Score.
Claim this listing →Overview
The Sei Protocol team's open-source MCP server integrates Sei blockchain functionality into AI coding assistants (Cursor, Claude Desktop, and others) through natural language. It handles address/balance queries, SEI token transfers, ERC20/ERC721/ERC1155 token interactions, contract reads/writes, and block/network data. An agent builder plugs it in to give an agent direct wallet and contract access on Sei without writing chain-specific RPC code.
Sato Score
56/100· MediumHow open, active & verifiable — not a safety or returns grade.
- Maintenance & liveness
- 20/35
- Code transparency
- 8/20
- Interface verifiability
- 8/10
- Docs & demo
- 6/10
- Listing transparency & provenance
- 11/15
- Independent verification
- 3/10
Deploy path reproduced — install verified in an isolated container (proves installability, not runtime safety).
Sato Check
v1.0.1 · as of 2026-10-06- Does it take your key?
- Reads a key
- 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 sei.io on 2026-07-13. Install: reproduced by Sato Hub on 2026-09-21.
| Claim | Value | Evidence | Source | Checked |
|---|---|---|---|---|
| Chains supported | Sei | self-reported | docs.sei.io | as of 2026-10-15 |
| Verification status | Self-Reported — not independently reviewed | self-reported | sei.io | as of 2026-10-15 |
| Install works | reproduced — install and entry both completedshows the install path works as written; not a statement about runtime behaviour | ✓ reproduced | docs.sei.io | 2026-09-21 |
| Website answers | answered (HTTP 200) | observed | sei.io | 2026-10-15 |
| Daily check record | 90 of 90 daily checks since 2026-07-17 succeededa success rate of our checks, not uptime; the source is this listing's own history | observed | — | 2026-10-14 |
| Takes your key | reads private-key material | traced | satohub.ai | 2026-10-06 |
| 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 | 2026-10-06 |
| Deploys as | npx (stdio, local, @sei-js/mcp-server)confidence 0.85 | self-reported | docs.sei.io | as of 2026-07-14 |
| Works with | Cursor, Windsurf, Claude Desktop, Claude Codeconfidence 0.90 | self-reported | docs.sei.io | as of 2026-07-14 |
| Sato Score | 56/100 (Medium)how open, active and verifiable — not a safety or quality grade | computed | satohub.ai | 2026-10-15 |
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 — reproduced in a container Sep 21, 2026
Runtime: Node.js (npm package @sei-js/mcp-server, runs via npx)
claude mcp add sei-mcp-server npx @sei-js/mcp-server
{"mcpServers": {"sei": {"command": "npx", "args": ["-y", "@sei-js/mcp-server"], "env": {"PRIVATE_KEY": "your_private_key_here"}}}}You supply: PRIVATE_KEY required — a raw wallet private key in local MCP config; high risk: grants full spend control of that wallet, use a dedicated low-value key
claude mcp add satohub-sei-mcp -- npx @sei-js/mcp-server
A local server: your client runs this command on your machine. Installing runs third-party software under your own credentials. Sato Hub publishes the documented invocation and, where the harness reproduced it, the date it did — neither is a safety review.
Read from the project’s own docs as of 2026-09-21. What a deploy spec is →
Observed record — 91 daily checks since 2026-07-17
- 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. 46 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 2026-10-15, 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
- Sei
- Agent types
- MCP Server, Wallet
- Open source
- Yes
- Deploys as
- npx (stdio, local, @sei-js/mcp-server)
- Works with
- Cursor, Windsurf, Claude Desktop, Claude Code
- Last checked
- 2026-10-15
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 Sei MCP fits
Related concepts: How Agents Use Wallets, What Are Onchain Agents?, What Are MCPs? The Standard Way to Give Agents Tools
Listing History
Recorded changes to Sei MCP's listing — status, verification, Sato Score, and recent releases. Full history is kept in the listing record.
- Sep 21, 2026Verified: deploy spec
- Jul 18, 2026Sato Hub began tracking this listing
- Jul 14, 2026Auto-enriched: deployment options, supported integrations
- Jul 13, 2026Listed on Sato Hub
Compared with
Appears in
Related Resources
Coinbase AgentKit
ActiveCoinbase's toolkit for giving AI agents wallets and the ability to take onchain actions.
Hyperliquid
ActiveOnchain perpetual futures and spot DEX running on its own L1 with an HyperEVM smart-contract layer.
Model Context Protocol (MCP)
ActiveAnthropic's open standard for connecting AI systems to external tools and data sources.
Reference
QuestionsWhat people ask about this pageShowHide
Questions people ask about Sei MCP
- Is Sei MCP open source?
- Yes. Sei MCP is open source under the Unknown license. Checked as of 2026-10-15.
- Which chains does Sei MCP support?
- Sei MCP lists support for Sei as of 2026-10-15.
- Is Sei MCP still maintained?
- Sato Hub tracks no commit or release for Sei MCP; it cannot say whether it is maintained.
- How do I install or run Sei MCP?
- Node.js (npm package @sei-js/mcp-server, runs via npx). Install: claude mcp add sei-mcp-server npx @sei-js/mcp-server. Entry: {"mcpServers": {"sei": {"command": "npx", "args": ["-y", "@sei-js/mcp-server"], "env": {"PRIVATE_KEY": "your_private_key_here"}}}}. Sato Hub reproduced this install in a container on 2026-09-21. It runs as an MCP server (npx @sei-js/mcp-server (stdio; --http mode documented)).
- Is Sei MCP verified on Sato Hub?
- Sato Hub holds one earned check for Sei MCP: Deploy path reproduced — install verified in an isolated container (proves installability, not runtime safety). Its Sato Score is 56 of 100, a measure of how open, active and verifiable the project is, not a safety, quality or returns grade.
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Cite this page
Sato Hub. "Sei MCP — Sato Hub." Sato Hub, updated 2026-10-15, accessed 2026-10-15. https://satohub.ai/resources/sei-mcpData last refreshed 2026-10-15; 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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