poke-conduit

The durable brain Poke consults. Poke already lives in iMessage (sanctioned, no Apple API, no ban risk) and is an MCP client that calls external MCP servers. poke-conduit inverts the usual integration: instead of building our own iMessage transport, Poke is the front-end terminal and poke-conduit is the MCP server it calls — a production-shaped, durable, multi-agent backend.

  iMessage  ──►  Poke (MCP client)  ──►  poke-conduit /mcp  ──►  Postgres (Neon)
                      ▲                        │  orchestrator · worker-agents
                      └───── proactive push ───┘  council · backlog · scheduler
                          (Poke inbound API)

You text Poke; Poke calls a tool here; poke-conduit does durable work and can text you back later through Poke's inbound API (async council verdicts, fired reminders).

What it does

Related MCP server: MCP Agent Memory

Architecture

A few small, single-responsibility seams make the whole thing testable offline and deployable with just Neon:

• Hand-rolled MCP (src/mcp/, src/http/core.ts) — a Streamable-HTTP JSON-RPC handler over Web Request/Response. No SDK: the surface Poke speaks is tiny, and hand-rolling keeps it edge-runtime-compatible and fully unit-testable. (Same choice the poke-amb-bridge made.) POST /mcp is rate-limited per identity (Poke user id, else IP) via a RateLimiter port (src/http/ratelimit.ts) — in-memory locally, Postgres-backed in prod; a static landing page is served at /, and a browser GET /mcp returns friendly server info instead of a 500.

• Store port (src/store/) — one SqlStore runs on pg-mem (tests / serve / demo) and Neon (prod) over an injected Sql driver. All timestamps are ISO text so they sort lexically and round-trip byte-identically between the two.

• Model port (src/model/) — ClaudeModel when ANTHROPIC_API_KEY is set, else a deterministic MockModel (so tests and the demo need zero credentials).

• Step seam (src/durable/step.ts) — council logic is written once against Step. It runs under LocalStep (in-process, memoized) inline within Vercel's 300 s budget by default, or on Inngest for true serverless durability when configured. The async council routes through an optional dispatchAsyncCouncil provider (src/durable/inngest.ts): set INNGEST_EVENT_KEY (and npm install inngest) and runs survive function freezes with per-step retries; leave it unset and it transparently falls back to the inline path. Inngest stays out of the 3-dep core — it's loaded lazily through a non-literal import, so the package is needed only when the feature is switched on.

• Two credentials, two directions — inbound (Poke → conduit: Bearer/x-poke-key + injected x-poke-user-id, gated by MCP_AUTH_ENFORCE) is distinct from outbound (conduit → Poke: POKE_API_KEY to Poke's inbound API, which makes Poke act on the message).

Run it locally

No credentials required — it falls back to pg-mem + MockModel + a mock Poke client.

npm install
npm test          # 129 tests (unit + tool handlers + full MCP wire e2e)
npm run demo      # narrated, self-asserting end-to-end walkthrough (22 checks)
npm run serve     # local HTTP server: GET / · POST /mcp · GET /cron · GET /healthz

The demo runs the real wire path (handleMcp(Request) → Response) and never sends a real message. Set ANTHROPIC_API_KEY first to watch the council deliberate with real Claude:

export ANTHROPIC_API_KEY=sk-ant-...
npm run demo

Drive the local server by hand:

npm run serve &
curl -s localhost:7411/mcp -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}' | jq '.result.tools | length'   # 13

Deploy

See DEPLOY.md — Vercel (edge functions) + Neon, env vars, the cron schedule caveat, and how to point Poke at your /mcp endpoint.

Project layout

api/       mcp.ts · cron.ts · inngest.ts · healthz.ts · _store.ts   (Vercel edge entry points)
public/    index.html                                  (static landing page served at /)
src/
  config.ts · ids.ts
  store/   types · schema · sql (SqlStore) · pgmem · pg (Neon) · index
  model/   types · mock · claude · index
  durable/ step.ts (Step · LocalStep · fromInngestStep) · inngest.ts (optional durable provider)
  poke/    index.ts (PokeClient · HttpPokeClient · MockPokeClient)
  agents/  personas · worker · council · orchestrator
  tools/   backlog · reminders · status · recipes · recipe-runner · council · index
  mcp/     auth.ts · server.ts (JSON-RPC)
  http/    core.ts (Request→Response core) · ratelimit.ts (RateLimiter port)
  scheduler.ts · render.ts · serve.ts · demo.ts
test/      store · model · step · council · council-async · scheduler · render · auth · tools · recipe-runner · mcp · ratelimit
docs/superpowers/  specs/ · plans/

Built as a finished MVP from a design spec → plan → task-by-task implementation, tests written immediately after each unit. See docs/superpowers/ for the spec (with the as-built addendum) and the implementation plan.