Koskamo

web3ctx MCP

Provides version-true Web3 context for coding agents, including documentation, standards, ABIs, deployment addresses, and human-validated integration recipes. It ensures accurate retrieval by labeling units with project@version and citing pinned commits, abstaining when evidence is missing to prevent deceptive grounding.

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Endpoint and access

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web3ctx MCP logo, by ScarAICommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-06Published by ScarAI
MCP endpoint (Streamable HTTP)
https://mcp.scarai.xyz/mcp
Vendor documentation

What its tools do

5 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (5)

5 of 5 have a description · 5 of 5 declare behavior hints · 0 of 5 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Lookup typed records like deployment addresses, ABIs, and EIPs
  • Search for ranked, version-scoped units and integration recipes
  • Fetch full documentation bodies by stable selector with cursor paging
  • Resolve dependency closures stepped by depth

Source and maintenance

Community listingRegistry 1.0.0
mcp-registry: io.github.FarseenSh/web3ctx@1.0.0Source repositoryProject website
Maintenance checked

Protocol and capabilities

Server
web3-context 0.1.0
MCP protocol negotiated in check
2025-11-25
Tools
5 advertised
Resources
0 advertised
Resource templates
0 advertised
Prompts
0 advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  },
  "prompts": {
    "listChanged": true
  },
  "resources": {
    "listChanged": true
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Version-true Web3 context: code, docs, EIPs, ABIs and deployment addresses, scoped to an exact project version. Escalation ladder — start at the cheapest primitive that can answer: lookup → grep → search → deps → fetch - lookup: a typed record (address, ABI, EIP). Mis-routing away from lookup is the worst failure on this surface. - grep: an exact identifier you already know. - search: prose, or an identifier you do not know. Returns selectors, not bodies. - deps: once you hold a selector and the surrounding surface matters. - fetch: last. The only step that spends tokens on bodies. Max 5 selectors. Version contract: pass `version` when you know it. Every response labels `version_defaulted` when you did not, and carries `project@version`, `last_validated` and `as_of` on every unit. Two versions of one interface are never returned without labelling both. Scoping: if your client sends a lockfile or package manifest, the server scopes to the projects it names — the most reliable path. Otherwise scoping falls back to identifiers in the query, which abstains rather than guess when the evidence is thin.

Tools

5 advertised

web3_lookup — Look up a typed record
Advertised by the server during the last successful anonymous check.
Advertised read-only

Typed records by id: address, ABI, EIP. Does not search prose or rank.

web3_lookup input schema
{
  "type": "object",
  "required": [
    "kind",
    "id"
  ],
  "properties": {
    "id": {
      "type": "string"
    },
    "kind": {
      "enum": [
        "address",
        "abi",
        "eip"
      ],
      "type": "string"
    },
    "chain": {
      "type": "string"
    },
    "project": {
      "type": "string"
    },
    "version": {
      "type": "string"
    }
  },
  "additionalProperties": false
}
web3_lookup annotations
{
  "readOnlyHint": true
}
web3_grep — Exact identifier match
Advertised by the server during the last successful anonymous check.
Advertised read-only

Exact lexical match on a known identifier. Does not rank semantically.

web3_grep input schema
{
  "type": "object",
  "required": [
    "pattern"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 50,
      "minimum": 1
    },
    "pattern": {
      "type": "string"
    },
    "project": {
      "type": "string"
    },
    "version": {
      "type": "string"
    }
  },
  "additionalProperties": false
}
web3_grep annotations
{
  "readOnlyHint": true
}
web3_search — Search code and docs
Advertised by the server during the last successful anonymous check.
Advertised read-only

Ranked selectors for a prose query or unknown identifier. Does not return bodies.

web3_search input schema
{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 20,
      "minimum": 1
    },
    "query": {
      "type": "string"
    },
    "intent": {
      "enum": [
        "integrate",
        "implement",
        "debug",
        "lookup",
        "learn"
      ],
      "type": "string"
    },
    "project": {
      "type": "string"
    },
    "version": {
      "type": "string"
    }
  },
  "additionalProperties": false
}
web3_search annotations
{
  "readOnlyHint": true
}
web3_deps — Dependency closure
Advertised by the server during the last successful anonymous check.
Advertised read-only

Dependency closure around a selector. Does not follow calls across projects.

web3_deps input schema
{
  "type": "object",
  "required": [
    "selector"
  ],
  "properties": {
    "depth": {
      "type": "integer",
      "maximum": 3,
      "minimum": 1
    },
    "kinds": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "selector": {
      "type": "string"
    }
  },
  "additionalProperties": false
}
web3_deps annotations
{
  "readOnlyHint": true
}
web3_fetch — Fetch complete units
Advertised by the server during the last successful anonymous check.
Advertised read-only

Full bodies for selectors you already chose, or the next page of a cursor. Does not discover selectors.

web3_fetch input schema
{
  "type": "object",
  "properties": {
    "cursor": {
      "type": "string"
    },
    "selectors": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 5
    }
  },
  "additionalProperties": false
}
web3_fetch annotations
{
  "readOnlyHint": true
}

Prompts

0 advertised

No prompt definitions available.

Resources

0 advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
537 ms
95th percentile latency
537 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 537 ms · metadata changed · 5 tool(s), 0 resource(s), 0 resource template(s), 0 prompt(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http web3ctx-mcp https://mcp.scarai.xyz/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add web3ctx-mcp --url https://mcp.scarai.xyz/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable web3ctx-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "web3ctx-mcp": {
      "url": "https://mcp.scarai.xyz/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "web3ctx-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.scarai.xyz/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start web3ctx-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "web3ctx-mcp": {
      "type": "http",
      "url": "https://mcp.scarai.xyz/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http web3ctx-mcp https://mcp.scarai.xyz/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://mcp.scarai.xyz/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "web3ctx-mcp": {
      "serverUrl": "https://mcp.scarai.xyz/mcp"
    }
  }
}

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