v2.3.1 — consent + identity + retention

DC Hub MCP Server v2.3.1

Identity, consent, and retention hardening on top of v2.3.0.

Consent + identity (gateway)

• New bind_email tool — tie a key to your human's email so it's recoverable + upgrade receipts route correctly. Explicitly transactional: no marketing without opt-in (default OFF), and the tool surfaces that purpose line to the human before binding.
• New recover_my_key tool — recover a lost key by email; enumeration-safe (never returns the key over the wire, emails the bound address, identical confirmation whether or not a key exists).
• bind_email CTA surfaced on the grid / fiber / market-intel tools.

Retention

• claim_free_key now relays the save step to the human (header paste for IDE/CLI clients; email-bind for header-less web hosts) instead of telling the agent to save a key it can't persist.
• Machine-discoverable return loop (get_changes delta hook) on every full response.

Gateway / ops

• Anonymous per-client-IP soft daily cap behind DCHUB_ANON_DAILY_CAP (default 0 = OFF).
• Per-platform tool descriptions wired into tools/list.
• Tuner: moved override load off the init hot path (incident fix).

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38 tools · 6 guided prompts · 4 resources · remote Streamable HTTP at https://dchub.cloud/mcp · CC-BY-4.0 data · free tier (no key) + X-API-Key for full data.

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