Saihm MCP Server

SAIHM MCP Server

Sovereign, encrypted, sharable, persistent memory protocol for AI agents.

v0.1.0 · Apache-2.0 · COTI V2 mainnet

What this is

A bare-bones Model Context Protocol server that exposes eight tools any MCP-capable AI agent (Claude Code, Claude Desktop, custom agents) can call to gain a persistent, encrypted memory layer the user owns:

• saihm_remember — store an encrypted memory cell
• saihm_recall — retrieve and decrypt your memories
• saihm_forget — true cryptographic erasure (GDPR Art. 17)
• saihm_status — your protocol-runtime stats and storage tier dashboard
• saihm_share / saihm_revoke_share — selectively share a memory with another agent or user
• saihm_governance_propose / saihm_governance_vote — protocol governance via gSAIHM

This package is a thin client. It holds no crypto, no storage, and no protocol runtime. Each tool forwards to a SAIHM operator endpoint that runs the full protocol stack on COTI V2 mainnet.

Install

npm install @saihm/mcp-server
# or run directly without install:
npx @saihm/mcp-server

Configure

The server needs two env vars:

SAIHM_ENDPOINT_URL=https://operator.example.com/saihm/v1
SAIHM_AUTH_HEADER=Bearer <token-issued-by-your-operator>

• SAIHM_ENDPOINT_URL — the SAIHM operator endpoint. Operators publish their endpoint URLs at https://saihm.coti.global.
• SAIHM_AUTH_HEADER — the Authorization header value the operator expects (typically a Bearer <token> issued to you after key-bound enrolment). The bare-bones client is authentication-agnostic and never transmits raw private keys; the operator's enrolment flow keeps your Wallet C key on your machine.

Place these in a .env file alongside the server (the .gitignore excludes all .env* files from any future repo).

Wire into Claude Code

{
  "mcpServers": {
    "saihm": {
      "command": "npx",
      "args": ["@saihm/mcp-server"],
      "env": {
        "SAIHM_ENDPOINT_URL": "https://operator.example.com/saihm/v1",
        "SAIHM_AUTH_HEADER": "Bearer <token>"
      }
    }
  }
}

What gets persisted, where

The bare-bones client itself persists nothing. The operator endpoint runs the full protocol stack: cells are encrypted under a per-cell DEK, sealed by a per-agent KEK, persisted to Filecoin, and audited on COTI V2 mainnet. See the operator's documentation for tier details.

Reporting engine

A reporting library is bundled as a sub-export, so operators can compose the eight MCP calls into bespoke reports with their own tooling (no extra dependency, no extra service):

import {
  validateBespokeTemplate,
  registerTemplate,
  generateRegistryAttestation,
  StubPublicRegistry,
  InMemoryReportingRuntime,
  GDPR_ART15_FIELDS,
  REGISTRY_ATTESTATION_FIELDS,
  type BespokeReportTemplate,
} from "@saihm/mcp-server/reporting";

What it covers

• Field universe (FIELD_UNIVERSE) — 280 fields (262 framework + 18 ledger). Templates that project a field outside this set are rejected at validation.
• Bespoke template schema — zod validator + universe-membership check + scope/cap enforcement.
• Authorization path validators — 4 paths: public / self / operator-self / operator-for-downstream.
• Receipt emission — 6 sub-kinds (report_generated / report_rejected / template_registered / template_superseded / erasure_chain_broken / rate_limit_exceeded) under a stable HKDF receipt domain.
• Framework smoke — registry-attestation (public auth) for end-to-end plumbing verification.

Constraints

• Every fieldProjections[] entry MUST be in FIELD_UNIVERSE.
• scope.customerIdHashes 64-hex; max 10,000 per template.
• scope.timeRange window ≤ 366 days.
• fieldProjections length 1–200.
• framework ∈ {gdpr-art-15, gdpr-art-17, soc2-t1, soc2-t2, iso27001, aml, audit-export, billing-history, registry-attestation}.
• format ∈ {pdfa3, json, csv}.

Worked example

const template: BespokeReportTemplate = {
  templateId: "acme-q1-summary",
  templateVersion: 1,
  operatorIdHash: "ab".repeat(32),
  scope: {
    customerIdHashes: ["cd".repeat(32)],
    timeRange: { from: "2026-01-01T00:00:00Z", to: "2026-04-01T00:00:00Z" },
  },
  framework: "gdpr-art-15",
  fieldProjections: [GDPR_ART15_FIELDS[0], GDPR_ART15_FIELDS[1]],
  format: "pdfa3",
};
const v = validateBespokeTemplate(template);
if (!v.valid) throw new Error(v.errors.join(", "));

const runtime = new InMemoryReportingRuntime(); // replace with your audit-ledger runtime
const reg = await registerTemplate(template, runtime);
if (reg.ok) console.log("registered:", reg.templateHash);

In production, replace InMemoryReportingRuntime with a runtime that persists audit payloads to your operator's audit ledger. Operators who inject signature verifiers should use pure-crypto libraries (@noble/curves for EIP-712, @noble/post-quantum for FIPS 204 ML-DSA) — the package itself bundles no EVM tooling.

Security

The bare-bones client enforces a small set of defaults so misconfiguration cannot leak the Authorization header in transit:

• HTTPS-only endpoints. SAIHM_ENDPOINT_URL must use https://. Plain http:// is rejected at construction time, except for 127.0.0.1 and localhost (so a local operator endpoint works during development).
• Per-call abort window. Each request runs under an AbortController that aborts after 30s, preventing a hung endpoint from starving the MCP server.
• Response-size cap. Responses whose Content-Length exceeds 16 MB are rejected before deserialisation.
• No header echo. Authorization is never included in thrown error messages or stdout.
• No filesystem reads. The package never reads from disk; configuration flows entirely through env vars.
• Zero EVM tooling. No ethers, no eth_*, no Solidity. If operators inject signature verifiers via AuthVerifiers, they should use pure-crypto libraries (@noble/curves, @noble/post-quantum).

Trust model: this client trusts whatever endpoint the operator configures. Cell IDs, audit anchors, and report receipts returned from that endpoint are surfaced to the agent verbatim — operators are the authority for content shown via saihm_recall. Verifying receipts against COTI V2 mainnet anchors is out of scope for the bare-bones; consume the cellId and auditCellId fields and verify against your own SAIHM mainnet read path.

For distribution integrity, the SAIHM publisher signs releases via npm sigstore provenance; verify with npm view @saihm/mcp-server --json | jq .dist and npm audit signatures.

License

Apache-2.0 — see LICENSE.

Project

• Site: https://saihm.coti.global
• Issue tracker: see homepage for current contact channel.