Add Imessage

Add iMessage

NanoClaw talks to iMessage through a single imessage channel with two

pluggable backends:

• Local (this Mac) — the Chat SDK bridge over chat-adapter-imessage,

reading this Mac's signed-in iMessage account (chat.db). macOS only; the

Node binary needs Full Disk Access.

• Hosted iMessage (via photon.codes) — a native adapter over Photon's

spectrum-ts gRPC stream. The hosted service owns the iMessage line, so

there's no Mac relay, webhook, or public URL. Works on any OS, and a

device-login flow provisions everything for you.

Both register the same imessage channel type; only one runs per install.

NanoClaw doesn't ship channels in trunk — this skill copies the unified

imessage adapter in from the channels branch. Full reference:

docs/imessage.md.

The mechanical steps under Apply carry nc: directive fences: an agent reads

the prose and applies them, and a parser can apply them deterministically from

the same document. Every directive is idempotent, so the whole skill is safe to

re-run; anything a parser can't apply falls back to the prose beside it.

Apply

1. Choose a backend

Pick the backend first — it decides which package gets installed and which

walkthrough runs below (the other backend's steps are skipped):

How should iMessage run — `local` (this Mac's signed-in iMessage account; macOS only, needs Full Disk Access) or `hosted` (a managed line via photon.codes; works on any OS)?

The local backend only works on a Mac — it reads this machine's iMessage

chat.db directly, and there is no such database off macOS. On any other OS,

stop here and choose hosted instead; otherwise you'd write a local config

that can never receive a message:

[ "$(uname)" = Darwin ]

2. Copy the adapter

Fetch the channels branch and copy the unified iMessage adapter and its tests

into src/channels/:

src/channels/imessage.ts
src/channels/imessage.test.ts
src/channels/imessage-registration.test.ts

3. Register the adapter

Append the self-registration import to the channel barrel (skipped if the line

is already present). This one line is the skill's only reach-in into core:

import './imessage.js';

4. Install the chosen backend's package

Pinned to an exact version — the supply-chain policy rejects ranges and

latest. Install only the chosen backend's package.

Local — the Chat SDK iMessage adapter:

[email protected]

Hosted — Photon's Spectrum SDK:

[email protected]

> Pin exactly. spectrum-ts ships breaking majors (v11 is what the adapter

> targets); don't @latest. NanoClaw's pnpm gate (minimumReleaseAge) requires

> a version ≥3 days old — both pins clear it. A fresher pin needs human sign-off

> before a minimumReleaseAgeExclude entry (CLAUDE.md → Supply Chain Security).

5. Build and validate

Build guards the typed createChatSdkBridge(...) core call used by the local

backend, and the registration test proves the channel is wired:

pnpm run build

pnpm exec vitest run src/channels/imessage-registration.test.ts

Both must be clean. imessage-registration.test.ts imports the real channel

barrel and asserts the registry contains imessage — it goes red if the

import './imessage.js'; line is missing or the barrel fails to evaluate. The

adapter loads neither backend's SDK at import (hosted spectrum-ts only in

setup(), local chat-adapter-imessage only in the factory), so the test

needs no package.

For the hosted backend, also run the full adapter suite — it includes an

integration block that exercises the real installed spectrum-ts (version,

exports, builders) and auto-skips when the package is absent:

pnpm exec vitest run src/channels/imessage.test.ts

Local backend: Full Disk Access (macOS)

The adapter reads this Mac's chat.db, which requires Full Disk Access granted

to the Node binary the host runs under. The Node path is buried deep (e.g.

~/.nvm/versions/node/v22.x.x/bin/node), so open its folder in Finder to make

the drag-and-drop target obvious. Harmless off a desktop (SSH/headless) — it

just no-ops:

open "$(dirname "$(which node)")" 2>/dev/null || true

Then tell the user:

Grant Full Disk Access to Node so iMessage can read your chat history:
1. Open System Settings > Privacy & Security > Full Disk Access.
2. Click +, then drag the "node" file from the Finder window that just opened.
3. Toggle it on, then come back here.

Stop and wait for the user to confirm Full Disk Access is granted before

continuing.

Now select the local backend in .env. The configure script owns this

upsert-and-remove (a plain set-if-absent env write can neither replace a stale

value nor delete a key, and a lingering hosted selector would shadow the

choice):

bash setup/channels/imessage-configure.sh local

Hosted backend: device login (via photon.codes)

The provisioning flow needs the phone number you send iMessages from — it

registers that number with your project so the hosted line recognises you:

The phone number you iMessage from, in E.164 format — + followed by country code and number, no spaces or dashes (e.g. +14155551234).

Tell the user what's about to happen:

Connect your hosted iMessage line (photon.codes):
1. A login URL and a short code will print below.
2. Open the URL in a browser, approve the device, and enter the code.
3. Setup then registers your number and prints the iMessage line Photon assigned to it. Send one message from your phone to that line — a number only enters routing after it has texted its line once.
4. Once the opt-in lands, setup finishes on its own and confirms your agent's iMessage number.

Run the device-login flow. It provisions the project, reuses its current secret

(regenerating only when the API returns none), registers your number, prints

the line to text and waits until that message opts the number in, and surfaces

the iMessage number you'll use — writing

PHOTON_PROJECT_ID + PHOTON_PROJECT_SECRET to .env and the assigned number

to data/photon-auth.json:

pnpm exec tsx scripts/photon-setup.ts setup --phone {{owner_handle}} --embedded

If the login times out, the code expired (~30 min) — re-run the step; a stored

token is reused. Check state any time with

pnpm exec tsx scripts/photon-setup.ts status.

Then select the hosted backend in .env — the Photon credentials already imply

hosted, but the explicit selector avoids ambiguity if local keys linger:

bash setup/channels/imessage-configure.sh hosted

Restart

Restart the service so it loads the iMessage adapter and the backend config you

just wrote, and wait for its CLI socket before wiring:

bash setup/lib/restart.sh

For the hosted backend, confirm the connection came up:

grep "Photon channel connected" logs/nanoclaw.log | tail -1.

Resolve your iMessage handle

The agent greets you in the iMessage conversation tied to the handle you

message from — that handle is both your identity and the conversation address.

The hosted flow already collected it above; for the local backend, resolve it

now (email works too — whatever iMessage recognises):

The phone number or email you iMessage from — a +E.164 number (e.g. +14155551234) or an email / Apple ID (e.g. [email protected]).

Hosted first contact: text your agent's iMessage number once (it was

printed above; also stored in data/photon-auth.json) before expecting any

message from it. This first text is required, not just convenient — the hosted

line can only message numbers that have already texted it (cold outbound is

rejected with Target not allowed for this project). Tell the user:

Send one text — anything — from your phone to your agent's iMessage number (printed above). The hosted line can only reply to numbers that have texted it first, so its welcome message needs yours to arrive first.

iMessage is a native channel: it sends the raw handle as the conversation

address, with no channel prefix — so the messaging-group platform id is that

handle as-is:

echo "{{owner_handle}}"

owner_handle and platform_id are what the owner-wiring step needs. The

welcome iMessage goes out through the adapter once the service is running — on

the local backend that needs Full Disk Access granted (above); on the hosted

backend it goes out via your photon.codes line after your first text.

Next Steps

If you're in the middle of /setup, return to the setup flow now. Otherwise

/init-first-agent stands up an agent on your iMessage DM, or /manage-channels

wires it to an existing agent group.

Channel Info

• type: imessage (one channel; the backend is local or hosted)
• terminology: iMessage has 1:1 "chats" (DMs) and group chats. Photon

(hosted) calls each conversation a "space".

• platform-id-format: DM = your bare handle (E.164 phone, or email for

local) — direct-addressable; the user id is imessage:<handle>. Group

(hosted) = the opaque Spectrum space id.

• how-to-find-id: DMs use the counterpart's phone/email. Groups (hosted) are

discovered on first message —

pnpm exec tsx scripts/q.ts data/v2.db "SELECT platform_id, name FROM messaging_groups WHERE channel_type='imessage'"

• supports-threads: no
• typical-use: Interactive 1:1 chat — personal messaging
• default-isolation: One agent per install. Multiple DMs with the same

operator can share an agent group; groups with other people should typically

use isolated session mode.

Hosted features

Markdown (native; PHOTON_MARKDOWN=false for plain text), file attachments in

and out (inbound staged into the session inbox, capped by

PHOTON_MAX_INLINE_ATTACHMENT_BYTES, default 20 MB), tapback reactions, read

receipts, typing indicators, and ask_user_question via /approve / /reject

slash replies. Optional .env: PHOTON_MARKDOWN, PHOTON_TELEMETRY,

PHOTON_MAX_INLINE_ATTACHMENT_BYTES, PHOTON_DASHBOARD_HOST,

PHOTON_SPECTRUM_HOST. Full table in docs/imessage.md.

Troubleshooting

The backend answer is rejected. It must be exactly local or hosted,

lowercase. Local only exists on macOS — it reads this Mac's chat.db directly —

so on any other OS the platform check stops you and hosted is the only path.

Local: outgoing works but nothing ever arrives. Full Disk Access wasn't

granted to the *actual* Node binary the service runs under — with nvm the path

changes per Node version (~/.nvm/versions/node/v22.x.x/bin/node), so an old

grant silently stops covering a new binary. Re-open System Settings → Privacy &

Security → Full Disk Access, add the binary at $(which node), then restart

the service.

spectrum-ts not installed (hosted) — re-run step 4

(pnpm install [email protected]) and restart.

Device login times out (hosted) — the code expires in ~30 min; re-run the

login step (a stored token is reused).

Target not allowed for this project (hosted) — intended: the line only

messages numbers that have texted it first. Text the agent's number once, then

retry (a welcome DM queued before that first text simply fails delivery).

Your handle is rejected at the resolve step. It must be a bare +E.164

number (+14155551234 — no spaces, dashes, or parentheses) or, on the local

backend, an email/Apple ID. Use the exact handle you actually send iMessages

from — a number-vs-email mismatch means your messages never map to the wired

conversation.

Adapter installed but silent. Run

pnpm exec vitest run src/channels/imessage-registration.test.ts — red means

the barrel import or the package install drifted, so re-run the Apply steps.

If green, confirm the backend connected (hosted:

grep "Photon channel connected" logs/nanoclaw.log), restart the service

(bash setup/lib/restart.sh), then check logs/nanoclaw.error.log.

More in docs/imessage.md.

Upgrading spectrum-ts (hosted)

spectrum-ts is pinned exactly because it ships breaking majors. To upgrade,

read the release notes for

every version between the pins, bump the pin, reconcile

src/channels/imessage.ts against the new typings, then pnpm run build and

pnpm exec vitest run src/channels/imessage.test.ts. See

docs/imessage.md.