The surface

7 tools. Zero surprises.

R/W • LOCAL

gc_list_agents

Returns the canonical 5-agent registry (kiro, codex, claude, gemini, copilot) with policy tiers and request_type candidacy. Call this before every submit.

WRITE • GATEWAY

gc_submit_task

Submit natural-language TaskEnvelope. Returns task_id, job_id, agent_routed_to. The single entry point for async specialized work.

READ • GATEWAY

gc_get_task_status / gc_get_job_status

Poll until terminal. Explicitly documents pre-fix stub/fabricated data behavior (gateway issues #1/#2) so agents can adapt.

WRITE • NOTION-BRIDGE

gc_write_soul_capsule

The compliance primitive. Append decision/trace/telemetry/artifact with session_id + source. Non-negotiable for WPP / EU AI Act.

READ • GATEWAY

gc_query_soul_capsule

Reconstruct any session's chronological decision trail. Filter by session_id, trace_id, type. Capped at 100 for safety.

READ • GATEWAY

gc_get_telemetry

η_thermo (Landauer-anchored efficiency), avg latency, cost_usd, capsule volume over sliding windows. Real operational visibility.

Real hardware evidence

Validated on baremetal diamondnode (GTX 1650)

Every tool exercised via direct registered handler invocation. 100% structuredContent + clean normalized errors. No secrets ever leak.

DIAMONDNODE RUN (Jun 2026)

65 ms

average tool latency

p95: 273 ms • 7/7 tools • 0 crashes

ERROR SURFACE DISCIPLINE

✓

403 “Invalid API key” → structured {error}

✓

Missing bridge URL → explicit actionable message

✓

Auth headers never echoed

REPRODUCIBLE

npm run bench:local
or on any diamondnode-class edge

Full JSON reports committed + available on target at ~/gc-mcp/bench-report-*.json

See scripts/bench.ts and the three bench-report artifacts in the repo for exact numbers and provenance.

WPP • EU AI Act §16

Built for traceability by default.

Every significant action that touches the gateway or produces side effects is expected to be followed by a gc_write_soul_capsule(type="trace") record. The Soul Capsule is the immutable, queryable audit ledger.

ORCID 0009-0008-8389-1297 canonical signature

Immutable Notion-backed Soul Capsule

η_thermo efficiency metric included

Redacted auth in all error surfaces

Install anywhere in < 60s

Claude Desktop / Cursor / Continue

npm install -g @kovach-enterprises/gc-mcp-server

# then add to claude_desktop_config.json / .cursor/mcp.json
{
  "mcpServers": {
    "gc": {
      "command": "gc-mcp",
      "env": {
        "GC_API_KEY": "your-gateway-bearer",
        "GC_NOTION_BRIDGE_URL": "https://...",
        "GC_NOTION_BRIDGE_AUTH": "..."
      }
    }
  }
}

Cloudflare Worker (remote HTTP)

wrangler secret put GC_API_KEY
wrangler deploy
# point any remote client at your *.workers.dev

See scripts/deploy_cf_worker.sh and wrangler.toml

Also ships with companion gc-connect.skill for Claude (packaged, ready for clawhub / smithery-style registries).