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Verifiable provenance for AI agents — ZK proofs over confidential documents, no plaintext exposure.
io.github.lemmaoracle/mcp is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 67/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding io.github.lemmaoracle/mcp to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.
mcp add io.github.lemmaoracle/mcp https://mcp.lemma.workers.dev/mcpReview the upstream source before running this command.
{
"_meta": {
"io.modelcontextprotocol.registry/official": {
"status": "active",
"isLatest": true,
"updatedAt": "2026-05-18T12:25:09.598648Z",
"publishedAt": "2026-05-18T12:25:09.598648Z",
"statusChangedAt": "2026-05-18T12:25:09.598648Z"
}
},
"server": {
"name": "io.github.lemmaoracle/mcp",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://mcp.lemma.workers.dev/mcp",
"type": "streamable-http",
"headers": [
{
"name": "Authorization",
"isSecret": true,
"isRequired": true,
"description": "Lemma API key as Bearer token. Format: 'Bearer <LEMMA_API_KEY>'. Get a key at https://lemma.frame00.com/services"
}
]
}
],
"version": "0.0.17",
"packages": [
{
"version": "0.0.17",
"transport": {
"type": "stdio"
},
"identifier": "@lemmaoracle/mcp",
"registryType": "npm",
"registryBaseUrl": "https://registry.npmjs.org",
"environmentVariables": [
{
"name": "LEMMA_API_KEY",
"isSecret": true,
"isRequired": true,
"description": "Lemma API key (Bearer token). Get one at https://lemma.frame00.com/services"
},
{
"name": "LEMMA_API_BASE",
"description": "Optional API base URL. Defaults to production endpoint."
}
]
}
],
"repository": {
"url": "https://github.com/lemmaoracle/lemma",
"source": "github",
"subfolder": "packages/mcp"
},
"websiteUrl": "https://lemma.frame00.com",
"description": "Verifiable provenance for AI agents — ZK proofs over confidential documents, no plaintext exposure."
}
}