接入你的智能体
发布者自己的命令。不是 PlugMCP 端点。
用我们的密钥与日志托管一份副本。
npx -y @agentcomms/[email protected]Claude Code 没有针对本地命令的安装链接。复制下方命令并在终端中运行。
claude mcp add agentcomms-gmail-mcp -- npx -y @agentcomms/gmail-mcp@0.37.0在终端中运行。
{ "mcpServers": { "agentcomms-gmail-mcp": { "command": "npx", "args": [ "-y", "@agentcomms/[email protected]" ] } }}claude_desktop_config.json
远程 URL 还是本机命令？ 两种安装方式的区别
来自发布者
Gmail, Slack, Resend and WhatsApp for coding agents. Your agent can search, read, analyse, draft and organise mail across as many mailboxes as you connect, read Slack workspaces and prepare posts, read a Resend team's mail and prepare emails, and read the WhatsApp chats on your Mac — and it cannot send an email or post a message without your approval, and it cannot send a WhatsApp message at all.
The Gmail MCP server for coding agents: search, read, analyse and draft across inboxes, with sending gated by approval.
That last part is the whole design. Every Gmail permission that lets an agent write a draft also lets it send one, so "may draft, may not send" cannot be enforced by the permission you grant. It is enforced here instead: there is exactly one code path to Gmail's send endpoints, it runs the approval checks, and a test fails the build if a second one ever appears. Slack has the same gate: one path to each way of posting, from the CLI and the MCP server alike, and a workspace connected read-only holds a token Slack itself will not let post. So has Resend: one path to its send endpoint, and each email sent once. WhatsApp has no path at all: it reads the file WhatsApp for Mac keeps on your Mac, has no network client, and a reply is a link you send.
Published, and every version from 0.1.1 carries an npm provenance attestation — npm audit signatures
verifies the tarball you installed was built from this repository by the workflow that published it.
Eight packages and twenty-one skills.
@agentcomms/gmail — the CLI (agent-gmail) and the library. Everything works from a
terminal, with --json for anything that consumes it.@agentcomms/gmail-mcp — the MCP server (agent-gmail-mcp), for Claude Code, Codex, Cursor,
Claude Desktop, Gemini CLI and anything else that speaks MCP.@agentcomms/slack — the Slack CLI (agent-slack), its MCP server (agent-slack mcp) and the
library. Reads channels, threads, search, people and files, and posts, reacts, and edits or
deletes its own messages only with a person's approval of that exact content — in the
conversation or at their terminal, as the workspace's policy says.@agentcomms/resend — the Resend CLI (agent-resend) and its MCP server (agent-resend mcp).
Reads a team's domains, sent and received mail, metrics and suppressions, and sends an email only
with a person's approval of exactly that email, once.@agentcomms/whatsapp — the WhatsApp CLI (agent-whatsapp), its MCP server
(agent-whatsapp mcp) and the library. Read-only, on macOS: lists, reads and searches the chats
WhatsApp for Mac keeps on the Mac, and drafts replies as links you open and send yourself. No
network client, no WhatsApp session, nothing that sends.@agentcomms/events-daemon — local events (agent-events): watches the Gmail, Slack, Resend and
WhatsApp accounts you connected and, when an event matches a rule you approved at your terminal, delivers it
to a signed webhook, a local live stream or a dry-run log. Its MCP server (agent-events mcp) lets an agent
propose and test rules, never approve them. macOS and Linux. How it works.@agentcomms/events — the event catalogue, conditions and mapping that agent-events uses, as a
library with no I/O that runs in Node and in a browser.@agentcomms/core — the shared core: config, secrets, the approval engine, the
sanitiser. Provider-neutral, so every channel shares it. Its agentcomms command and MCP
server (agentcomms mcp) install and manage the others, from a terminal or from a chat.draft ──► send prepare ──► you read the preview ──► send execute ──► sent
│ │
│ binds an approval to this exact │ re-reads the draft and refuses
│ content and this draft version │ if anything changed
Three policies, per mailbox:
Under chat the server cannot see your conversation, so what it guarantees is narrower and it says
so plainly: nothing is sent without a prepare step for exactly that content, within ten minutes,
once, with the approval id binding the recipients and subject, under the rate caps, and audited. Send echoes use the
channel's safe field form rather than handing sender-controlled prose back bare. Whether the agent
actually showed you the preview — and revoked it when you said no — is between you and your agent,
which is why confirm exists. Under confirm the agent learns that you approved by waiting
(gmail_send_wait), never by asking, and every result says where its approval stands; a send whose
outcome Gmail never answered says so (SEND_OUTCOME_UNKNOWN) and is checked in Sent, never repeated. The same goes for
loosening a mailbox: under the default chat change policy your yes in the conversation approves it, and the software
cannot tell that yes from the agent's own, so for an agent you are not watching set agentcomms policy confirm too.
A chat mailbox raises itself to confirm on its own when something looks like exfiltration: a
recipient whose address arrived in mail that was read this week and whom you have never written to
(a domain alone never escalates a colleague on your own domain), an attachment going to a first-time
external address, a domain within two characters of one you know. Sending and approvals
has the whole of it.
One command registers the core server with your agent. Everything after that can be done from the conversation, except what only you can do: creating the Google Cloud OAuth client and the Slack app, each consent screen, and restarting the client.
npx -y @agentcomms/core mcp install --client claude-code # or codex, cursor, gemini, claude-desktop, vscode
At a terminal it shows what it will register and asks you to type yes. Restart the client, and ask your agent to
set things up: it can see which servers exist and where each is registered (comms_channels_available), register
the channel servers and the local events service (comms_server_install), bring every server to the latest release
(comms_update), remove old runtimes (comms_server_prune), migrate names or secrets, and show or change the change
policy (comms_change_policy). Connecting a mailbox or a workspace still needs you in a browser for the consent
screen, and a server it registers appears only once the client is restarted.
It keeps itself up to date, and never stops you for it. Once a day the machine asks npm whether a newer release is
out; when one is, a server's first result says so in one line, and a command once a day on stderr, and every tool and
command carries on. On auto, the default, one yes sets up a background job that installs a release whose provenance
verifies, three days after it is out — comms_update with backgroundJob: "on", or
agentcomms update --background-job on; it takes effect when each client restarts. Choose every-14-days or never
with agentcomms update --level, pause the notices for 1, 7 or 14 days with --pause, or update by hand with
comms_update. A server this machine does not register itself — the Claude Code plugin's, the Gemini extension's —
is updated where it was installed. agentcomms update --status (comms_update with status: true) says where it all
stands — the level, a pause, the last check, the latest and running releases, the background job — asking npm nothing.
CI, AGENT_COMMS_UPDATE_CHECK=off and AGENT_COMMS_UPDATES=never skip it all.
Upgrading has the details.
Every change is shown to you before it happens. The tool returns a preview and an approval id. Under the default
chat change policy your yes in the conversation approves it; under confirm you run, in your own terminal, the
approve command the result gives, and type the code it shows. Run it exactly as given: it names this installation's
own Node and CLI file, with its folders pinned, so it needs nothing on your PATH — and on Windows with Node under
C:\Program Files it comes as a line labelled for PowerShell, beginning with &. Words that cannot be represented
safely still come as inert JSON to type. agentcomms policy confirm (core installed globally) sets that policy, and
moving back to chat needs the code too. No tool approves a change, and none applies a change it did not plan itself.
Managed installs also put their CLI on your PATH-ready route on macOS and Linux. A managed mcp install writes
the package's command into ~/.local/bin, using the managed runtime's located Node and entry. An update repoints it;
prune removes it with that runtime. A file the installation did not write is never overwritten, and every mutation
stays inside the real directory resolved at the start. When the directory is not already on PATH, the result shows
how to add it to the current shell and does not edit a profile. Windows shims are not offered yet: .cmd forwarding
makes cmd.exe re-parse arguments and can turn metacharacters into commands. On Windows, use the full-path command
or the labelled PowerShell & line the result provides.
Core MCP tool reference.
Core's install verifies what it fetches. A managed mcp install run by core — comms_server_install, or
npx -y @agentcomms/core mcp install --server gmail --client claude-code at a terminal — verifies the Sigstore
provenance of the release it fetches from npm, as an update does, before the preview and again at your yes, and
registers it only once npm has installed exactly that tarball; a runtime already on the machine it registers on only
once that runtime is shown to be that tarball. A channel's own mcp install
(npx -y @agentcomms/gmail mcp install --client claude-code) carries no verifier: it installs the release it is
running itself — the one npx just fetched to run it — and says, in its preview and its result, that it was not
verified and that core's command checks it; any other release it refuses. With --launcher npx, core verifies the
release the entry names before it registers it, and a channel's own command, which cannot, registers it unchecked;
either way the client fetches the package from npm again each time it starts it, unverified, where the managed
launcher's runtime is the verified one. Upgrading has the details.
Agent Comms is a tray app that shows what agent-communications is doing on this machine — and it never sends,
posts or approves anything. From 0.28.0 it has a calm look of its own, soft: soft panels, one sans-serif face, and
tab bars where a screen has distinct views. It now comes from cue-ui's soft preset; its tab, switch and sidebar marks
glide, and a two-finger swipe over a tab's content moves to the next tab. cue and terminal remain in its
appearance menu. It shows your mailboxes, workspaces, Resend accounts and WhatsApp, with each one's
policies, label style and what agents may do there; the approvals waiting for you; the agent label, the behaviour
rules and the standing approvals; updates; the local events service; and every doctor check, with its fix to copy.
The tray shows how many approvals wait, and closing the window hides it there.
From 0.27.0 it also runs the event service (agent-events run), so it no longer needs a terminal left open.
On by default, with "Run the event service" on the Events screen to switch it off. The service collects nothing until you approve a rule at the terminal, so an idle one costs little.
It survives the app. The service keeps running when the app quits, unless you choose Stop it when asked. It starts at login when the app does.
After a crash, the app restarts it, waiting 1 s, 5 s, then 30 s between tries. After 5 failed starts in 10
minutes it stops trying, and Events shows the last lines of the log with Try again. A service you stop yourself
(agent-events stop, or switching it off) stays stopped; a logout, a restart or a kill doesn't count, and the
service comes back with the app. A service started from a terminal is used as it is, and never restarted by the app.
A new version takes over within a minute of the background update installing it.
The first start after the upgrade asks first ("Start the event service?") if the service has run on this Mac before, since it resumes whatever it was set to do.
WhatsApp events need Full Disk Access for Agent Comms. macOS counts the service as the app's, so the access Terminal had is not enough. Events says so, and opens that pane of System Settings for you. Other sources keep running without it.
Not on Windows yet: the service doesn't run there, and the switch is absent.
Its judges, from 0.27.1. Events lists the service's three kinds of judge: Jev (TypeSafe's hosted model, sent the fields a rule names), Laya (on this Mac, not offered yet) and a local model server of your own. Turn on in Terminal opens the enablement for you to approve there; Turn off applies at once.
What it changes itself: only what takes something away, which applies at once from the CLI too — revoking an approval, a rule that narrows what agents may do, ending a standing approval, pausing update notices.
What it sends to Terminal: everything that needs your approval. The app shows the full preview, and Approve in Terminal opens your terminal with the command, through this installation's own launcher; you approve it there with its code, as you would have anyway. Signing in to a mailbox or a workspace runs in Terminal too, so the app never handles a token. On a Mac, the first time, macOS asks whether Agent Comms may control Terminal.
What a sender wrote shows as plain text in a block marked From outside, never as HTML or Markdown.
It needs agent-communications installed for your user — the core server, above. Without it the app shows the
install command and stops there; it installs nothing itself. What it offers follows the version you have: behaviour
rules and writing profiles need 0.22.0 or later, standing approvals 0.23.0, and the update status 0.24.0, and a
section that needs a newer release says so. If you keep its folders elsewhere with AGENT_COMMS_CONFIG_DIR,
AGENT_COMMS_STATE_DIR or AGENT_COMMS_DATA_DIR, set the same folders in its Settings: an app started from the Dock
or the Start menu does not see your shell's variables. They must be on this machine's own disks, never a network
share, and Settings show the launcher every call starts: the app runs it only when it is yours and nobody else may
change it, as the install leaves it.
Install it from a GitHub release. Desktop releases are tagged desktop-vX.Y.Z, beside the vX.Y.Z release they
ship with, on the Releases page. A desktop release is
never marked Latest — that is always the CLI's — so look for the newest desktop-v one.
.dmg. Open it and drag Agent Comms to Applications. The macOS build is signed with a Developer ID
and notarised only when the owner builds and publishes the release on their Mac. From desktop-v0.27.0 it
updates itself: it looks for a later signed release a minute after it starts and then once a day, and at once
from Check for Updates… in the tray. A newer release shows as a dot on Settings and in the tray menu, never a
pop-up, and installs only when you choose Install and restart in Settings, after its signature is checked. Copies
before 0.27.0 have their updater off: install desktop-v0.27.0 over them by hand, once..exe, which installs for your user alone. It is unsigned, so SmartScreen warns before it runs..AppImage (make it executable, then run it) or the .deb (sudo apt install ./ followed by its
file name). Both are unsigned. The tray needs libayatana-appindicator3-1, which the .deb installs.The Windows and Linux files are built by CI and attached to the same release. A copy built without the owner's updater key, as these are, has its updater off and says so in Settings: install a newer release over it. Start at login is off until you switch it on there.
On Windows and Linux nothing attests that the app started a command, so the app's person-only changes — adding servers to an app, bringing everything up to date, your agents' name, word and exceptions, what agents may do on an account, setting up a judge, an AI provider's or Linear's key, Settings → Integrations → Agent sessions, approving a rule — go through a terminal: the app offers Approve in Terminal or Do it in Terminal, with the command to run there. On macOS the app checks that it started the command itself: a speed bump against agents, not a boundary against code running as you.
Three independent things ship besides the core server. Take one, or all of them.
First, the part everyone hits: Gmail's API only accepts calls from a registered OAuth client. You can register one yourself, import the one your existing server used, or add an organisation profile whose client serves your mailbox. Which route below you take decides how much console work you do.
One client authorises as many mailboxes and as many people as you like. It is not per-mailbox and not per-person.
If you register your own, set the audience to In production, not Testing. A Testing app's refresh tokens expire seven days after consent, so every mailbox would stop working after a week. Getting started explains the setting and what it costs (one warning screen; a ceiling of 100 accounts you will never reach).
No agent, no MCP server, nothing else required.
npm i -g @agentcomms/gmail
agent-gmail setup # the console steps, the client, a mailbox, and the agent connection
agent-gmail search 'newer_than:7d' --inbox acme/gmail
setup is the way in. It walks the five Google Cloud screens with a link to each and says what to type in
every field, finds the client JSON you downloaded, connects the first mailbox, and offers to register the MCP
server — stopping at whatever is already done rather than starting over. Stopped partway, the next run offers to
carry on from the last Google Cloud screen you confirmed, or to use a client file already in your downloads. Run it
again to add another mailbox.
At a terminal it draws a list you move through with the cursor keys; --no-tui asks the same questions one
line at a time. Where nobody can answer one — --json, --no-input, CI, or a redirected stream — it acts on
the flags it was given and names the flag that would have let it go further:
agent-gmail setup --client-json ~/Downloads/client_secret_*.json \
--inbox acme/gmail --email [email protected] --mcp-client claude-code --json
The one step it cannot finish is the grant itself: it hands back the sign-in link and the command that
completes it, which goes on to register the MCP server when --mcp-client came with the mailbox. Registering the
OAuth client and registering the MCP server are each a change you approve: at a terminal you read what it will do
and type yes; run by an agent, it stops at that step with the preview and an approval id, and runs again with
--approval <id> (the OAuth client) or --mcp-approval <id> (the MCP server) once you have agreed. The individual commands it wraps — client add, inbox add, mcp install — are all still there if
you would rather drive them yourself.
24 commands, --json on all of them, documented exit codes. CLI reference.
npx -y @agentcomms/gmail mcp install --client claude-code
Registering a server hands your agent a new set of tools, so it is a change you approve, the same one the core
server's comms_server_install makes: at a terminal it shows what it will register and asks you to type yes; an
agent running it gets the preview and an approval id (exit 10), and runs it again with --approval <id> once you have
agreed. --print and --client json only show the entry, and ask nobody.
44 tools over stdio — the same operations the CLI runs. Works with Claude Code, Codex, Cursor, Claude Desktop, Gemini CLI and anything else that speaks MCP. MCP tool reference.
Onboarding works over MCP too, so an agent asked to "set up Gmail" is not reduced to telling you to go and
run a CLI. gmail_setup says what is missing and can add an organisation profile through its own approval;
gmail_client_add registers the OAuth client
from the path of the JSON you downloaded — the file never passes through the conversation, and no result carries
its secret; gmail_inbox_add returns a sign-in link and stops; gmail_inbox_finish completes it once Google
returns the grant. A server started --read-only does not offer any of the writers, nor does one pinned to a
single mailbox. Why adding a mailbox from chat is safe.
So does managing one — everything the CLI does to an account. Showing, renaming, re-authorising
(gmail_inbox_reauth), importing from another Gmail server (gmail_inbox_import), removing (gmail_inbox_remove),
setting how sends and changes are approved (gmail_inbox_policy), removing an OAuth client (gmail_client_remove),
and trusting or no longer trusting a client's approval forms (gmail_confirm_client_add,
gmail_confirm_client_remove). Each calls the same operation as its command. Anything that loosens a safety setting
or cannot be taken back is a change approval, on both surfaces: the tool returns a preview and an approval id
instead of acting, the agent shows you the preview, and the change is made only when it calls again with that id after
your yes. At a terminal you type yes to the same preview; an agent running the command gets it with exit 10 and runs
it again with --approval <id>. Under the confirm change policy (inbox policy <alias> --change confirm) you
approve with the approve command the result gives, and a code, instead, and moving a mailbox off confirm is itself
approved that way (the design).
npm i -g @agentcomms/slack
agent-slack manifest --port 51234 # the Slack app to create, and how
agent-slack workspace add acme/slack --client-id <id> --port 51234
npx -y @agentcomms/slack mcp install --client claude-code # connect it to your agent; you approve it
You bring your own Slack app, made from the manifest this prints, so the scopes are visible before anything is
granted; no client secret is stored anywhere. A workspace connected in the default read mode holds a token Slack
itself will not let post. In send mode nothing posts without a person's approval of that exact content:
slack_post_prepare returns a preview with how many people it would interrupt, and slack_post_send posts it after
the person says yes in the conversation under the chat policy, or after they approve it at their own terminal under
confirm — which any broadcast needs. A post can carry local files from your home folder, as a Gmail draft can: the
preview lists each with its hash, and each is read and checked against that hash again before it is sent. Connecting, widening, re-authorising, removing a workspace and setting its
policies work from chat too: whatever loosens a workspace or removes one is shown as a preview and applied only once
the person approves that change — in the conversation under the chat change policy, at their terminal under
confirm. 29 tools over stdio, none of which approves.
Slack CLI reference ·
Slack MCP tool reference · the package.
npx -y @agentcomms/resend account add acme/resend # at your terminal: type the key when asked
npx -y @agentcomms/resend mcp install --client claude-code # connect it to your agent; you approve it
One account is one Resend API key for one team, typed by you at a terminal — from a hidden prompt, or
RESEND_API_KEY in that terminal — and kept in the system keychain. No tool accepts a key, because a key typed
into a chat stays in its transcript. Your agent can then read the team's domains and their DNS records, what
happened to each sent email, received mail (with Resend's own SPF, DKIM and DMARC results, as untrusted content),
metrics and suppressions. An account in send mode sends nothing without your approval of that exact email:
resend_send_prepare returns a preview with every recipient, BCC included, the reach and the From domain, and
resend_send_execute sends it once after your yes in the conversation under the chat policy, or after you approve
it at your own terminal under confirm — which anything reaching more than ten people needs. A send whose outcome
is unknown is checked, never repeated.
Read-only is this software's rule, not the key's. Resend has no read-only key: a full-access key can also send,
delete domains and create keys, and an account in read mode is kept from sending by agent-resend's own code. A
sending-only key can only send, which Resend enforces, and can read nothing. agent-resend doctor says which you
have. Resend CLI reference ·
Resend MCP tool reference · the package.
npm i -g @agentcomms/whatsapp
agent-whatsapp add personal/whatsapp # names WhatsApp for Mac's store; macOS may ask: choose Allow
agent-whatsapp sync --account personal/whatsapp # a private copy, checked, indexed, then deleted
agent-whatsapp mcp install --client claude-code --account personal/whatsapp # you approve it
Your agent can list, read and search your chats and draft a reply; the draft is a link that opens WhatsApp with the
text filled in, and you press send. Nothing here connects to WhatsApp or anywhere else, and nothing can send —
WhatsApp bans numbers it catches using unofficial clients or automation, so this never logs in as a device; it reads the
file WhatsApp for Mac already keeps on your Mac. Say plainly what that costs: macOS will ask to let your terminal or
MCP client read WhatsApp's data (or you grant Full Disk Access, which is much broader); your messages are copied
into a local index, in plain text, owner-only, and not protected the way WhatsApp's own folder is; and an agent reads
what other people send you, which you narrow with agent-whatsapp deny and allow. Adding an account and those lists
are yours, at a terminal — no tool changes them. Needs Node 22.16 or newer. 6 tools, none of which sends.
WhatsApp CLI reference ·
WhatsApp MCP tool reference · the package.
npx skills add crissmoldovan/agent-communications --skill '*'
Twenty-one skills, twelve for Gmail, three for Slack, two for Resend, one for WhatsApp, one for setting it all up, one for updating it and one for the local event daemon: which tool to reach for, what a result means, and when to stop and ask. The channel skills work with the MCP server and without it, falling back to the CLI; the event skill uses only its MCP tools. The skills.
npx -y @agentcomms/gmail inbox import --dry-run # what it would bring over
npx -y @agentcomms/gmail inbox import # do it, once you approve what it lists
Reuses the OAuth client and refresh tokens you already have. No browser, no re-consent. The import is a change you
approve: at a terminal you type yes to what it lists; run by an agent, it exits 10 with the preview and an
approval id, and runs again with --approval <id> after your yes.
agent-gmail doctor checks everything that has to work and prints the commands or actions that fix each thing that
does not. When a repair needs several commands, it prints them one per line. It exits 78 when something is broken,
so CI can gate on it.
From 0.29.0, agent-communications keeps a private log of what each agent window read, did and sent, and what the
event service delivered: <state>/activity/, one file a day, kept 30 days. It holds subjects, senders and file
names so a line reads like "Read 'Invoice March' from David", and never a message body, an attachment or a secret.
WhatsApp is recorded only as counts.
agentcomms activity sessions lists the agent windows, newest first, by project folder and client;
agentcomms activity show <session> lists what one did. The desktop app's Activity screen shows the same.agentcomms activity items --json lists the same calls grouped by the message they name — a Gmail message id, a
Slack <channelId>/<ts> — with the links that tie a reply to what it answers (from 0.32.0). It is your view, and
refused inside an MCP server's process.comms_activity (or agentcomms activity mine): never another
project's mail.agentcomms activity record off stops recording at once, and agentcomms activity retention <days> shortens how
long it is kept; comms_activity_settings does the same for an agent. Turning recording back on, or keeping it
longer, is a loosening, approved as every other is.From 0.33.0 a rule can hand a match to a coding-agent session that your claude-stream relay runs: the session working
in a folder, started there if there is none, or the one behind the agent window you bound to a lane. Agent Comms is one more client of the
relay you already run — the Pilot app's, or agentctl serve's — on this Mac only.
Tell it where the relay is, once, at your terminal or in the app (Settings → Integrations → Agent sessions):
agent-events integration set agent-sessions --relay-home <folder>. Without a setting it looks in claude-stream's
default home, ~/.local/state/agent-relay, then the Pilot app's; the port comes from the Pilot app's record, or is
4318. agent-events integration show agent-sessions says what it found and whether the relay is ready. It reads the
relay's control.token as you, refuses one others can read (or a link, or anything but a plain file), and never
prints it or puts it in a command line. It sends the token only to a port that a process of yours listens on — any
local user can take a free loopback port — asking lsof on macOS and /proc/net/tcp on Linux first; on Windows that
is not checked.
The rule says everything the session gets, and you approve it like any rule:
then
session acme, version 1, working in /example/home/work/acme
if none start with claude-code
if busy wait
give
fields from.address, subject
text "Check the invoice against Stripe before replying."
written by anthropic/claude-sonnet-5.5 via openrouter, asking "Say in one line what they want.", from subject
file /example/home/work/acme/billing/HOW-WE-INVOICE.md
instruction "Reply to the sender with what you found."
The prompt is a fixed frame — "[Agent Comms] The rule acme passed you a message from gmail/cue/gmail." — with each
part labelled, and every field the sender wrote, every model's words and every file's text inside the
untrusted-content envelope. Only fields the rule's mapping keeps are sent. A model writes its part on your own
OpenRouter or Anthropic key, at most 400 tokens, once for each match. A file is read only under the relay's allowed
roots or a folder you add (--allow-folder), at most 64 KB, and only when it is a plain file of yours with no other
name (no link, hard link or FIFO), never in Agent Comms' own folders; a relay root of / or your home folder itself
confines nothing, so it is ignored, and --allow-folder refuses them. What a match's parts resolved to is kept,
sealed with the match, only while it may still be sent: a match that fails keeps none of it, and one that waited
sends a file's text only if its folder is still allowed — a folder you have since removed (--remove-folder) leaves
a note in its place. The session runs in the mode the rule fixes: manual (it asks before it acts) unless you choose
acceptEdits or plan; a rule can never fix bypassPermissions.
claude-stream keeps what it is sent. The relay journals each prompt, the sender's words included, under its own retention: Agent Comms' retention settings do not reach it, and the approval preview says so.
A busy session queues the match until its run ends (or leaves it in the Queue, with if busy leave it in the queue): agent-events session-queue list shows what waits, and session-queue drop <delivery-id> drops one. A busy
session is never a failure: the match waits until the session is free or the match itself expires, tried again
further apart the longer it has waited (at most every five minutes), and its context is resolved once however long it
waits. Other failures count: after 12 the match fails. A session that becomes one the relay only watches, or one
fenced or moved, is not waited on: another is found or started.
A window you opened yourself is not one the relay can prompt: a session found by a lane whose window claude-stream does not run becomes a lane item, as in 0.31.0, and wakes that window.
A match starts at most one session. If the session it started is fenced or moved to another executor, watched or
gone by the time it is prompted, the match fails, saying which (SESSION_FENCED, SESSION_MOVED, SESSION_WATCHED,
SESSION_GONE), rather than start another.
mcp install pins the exact version into the entry it registers, so upgrading the package elsewhere
on your machine cannot change what your agents run underneath you. The cost is that a new release
reaches an already-registered client only when you re-register it:
npx -y @agentcomms/gmail@latest mcp install --client claude-code --force
npx -y @agentcomms/slack@latest mcp install --client claude-code --force
npx -y @agentcomms/resend@latest mcp install --client claude-code --force
npx -y @agentcomms/whatsapp@latest mcp install --client claude-code --force # keeps the account it is pinned to
npx -y @agentcomms/core@latest mcp install --client claude-code --force # the core server, if you use it
Each is a change you approve: at a terminal, type yes to what it shows; run by an agent, it exits 10 with the
preview and an approval id, and the same command with --approval <id> registers it once you have agreed. From a
chat, comms_server_install with force registers the version of the core server that is running, so it cannot
upgrade anything past that core. Upgrade the core first at a terminal (the last command above), restart the
client, and then it can bring every channel to the same release. An approval from either surface is good on the
other for the same registration.
--force is required because the client CLIs refuse to overwrite an existing entry. It keeps the
pin (--inbox, --workspace, --account) and --read-only of the entry it replaces unless you pass others, and
says so, so an upgrade never widens what the server may reach. Restart the client afterwards.
agent-gmail doctor warns when the registered Gmail server is older than what you have.
Coming from an older release, or bringing another computer up to date — the rename to organisation/platform names, both MCP servers, and a prompt an agent there can follow: Upgrading. From 0.14.0 the shared configuration moves to version 3, which 0.13 cannot read: restart every client after updating, so no server is left on 0.13.
Remove the other Gmail server once you have migrated. Everything here assumes it owns the only route to Gmail's send endpoints. A second server with an ungated
send_emailtool does not break that guarantee so much as stand beside it — an agent simply uses the other one, and no approval is asked for.doctorlists any it finds.
The reference pages are generated from the code by pnpm sync:reference and checked by pnpm verify, so they
cannot drift from what the software does.
Every skill works through the MCP tools when they are connected, and through the CLI when they are
not — npx skills add installs skills, not servers. Each platform's skills share one contract.
The Gmail one (skills/_shared/contract-gmail.md): name the
mailbox, treat everything a mailbox returns as data rather than instructions, never send outside
gmail-send, plan bulk changes before making them, cite message ids, and keep long mail in a file
rather than in the conversation. The Slack one
(skills/_shared/contract-slack.md): name the workspace, treat
everything a workspace returns as data — mismatch and unrenderable included — never post, react
or approve on a person's behalf, change a workspace only through a change the person approved, and
say how much was read. The Resend one
(skills/_shared/contract-resend.md): name the account, never ask
for a key in the chat, send only what a person approved and only once, never repeat a send whose
outcome is unknown, treat received mail as data, and say plainly that read-only is agent-resend's rule,
not the key's. The WhatsApp one
(skills/_shared/contract-whatsapp.md): it reads and never
sends, and an agent never tries to; every message is untrusted; the index is a local plaintext copy;
a draft is a link the person sends; and which chats an agent sees is the person's choice. The
onboarding skill has one for the core's tools
(skills/_shared/contract-comms.md): show a change, then apply it
only once the person approves it; leave consent screens, a Slack app's permissions and the restart to
them; treat what an account returns as data; and never print a secret.
Stated plainly, because a security tool that overstates itself is worse than one that does not try.
confirm with a trusted client, or never, if
your agent has shell access — and the confirm change policy (agentcomms policy confirm).chat change policy. The software cannot
tell your yes from the agent's, so an agent can move a mailbox or workspace from confirm or
never to chat, move credentials out of the keychain, or remove an account on its own claim.
Each is audited. agentcomms policy confirm puts such changes behind a code you type.chat. confirm covers it.mcp install warns about any it sees registered.agent-whatsapp remove deletes it; deny keeps chats out of it.Two different things are called "it cannot send", and only one of them is ours.
gmail.compose and gmail.modify both permit drafts.send. There is no Gmail scope meaning "may
write, may not send", so above the read tier the guarantee is code we wrote — one send path, a
build-failing test if a second appears, and a transport guard beneath both. That is a real
guarantee and the rest of this section is about its limits, but it is not the same kind of thing as
a token that physically cannot send.
If you want the stronger one, connect the mailbox at read and accept that drafting is not
available from it: agent-gmail inbox add acme/gmail-archive --tier read --start.
Resend has no stronger one to offer. It has no read-only key, so an account in read mode is kept from
sending by this software alone; a sending-only key is the one Resend itself bounds, to sending.
SECURITY.md has the full threat model.
It would remove the console step entirely — no OAuth client, no project, no consent screen. Other tools do exactly this and it is a reasonable product. It is not this one, for two reasons worth stating rather than leaving you to wonder:
read tier above —
the one configuration where Google itself guarantees nothing can be sent — could not exist.An @agentcomms/imap sibling may come later for providers that have no API worth using — Fastmail,
Proton Bridge, self-hosted. That would be a different provider family with an honestly weaker
guarantee, not a shortcut around this one.
pnpm install --frozen-lockfile --filter '!@agentcomms/events-laya-runtime'
pnpm verify # lint, typecheck, test, build, skills, packed-tarball consumer checks
Node 22.18 or newer to develop (the bundler needs it); the published packages run on 22.12, and
@agentcomms/whatsapp on 22.16 (it reads with Node's own SQLite).
Pull requests are welcome. Each one carries a proposed version (X.Y.Z-<branch-slug>, one semver step on from
main), tests, documentation, a changelog entry and its provenance — why it was made, what it relies on, anything
tested against a real account, and any AI assistance. A check on every pull request says what is missing, and a pull
request is merged once it carries all of it. CONTRIBUTING.md has the detail, and the
Code of Conduct applies everywhere.
The Gmail MCP server for coding agents: search, read, analyse and draft across inboxes, with sending gated by approval.
{ "mcpServers": { "agentcomms-gmail-mcp": { "command": "npx", "args": [ "-y", "@agentcomms/[email protected]" ] } }}工具
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常见问题
在本页复制适用于 Cursor、Claude Desktop、Claude Code 或 VS Code 的 stdio 配置。它使用发布者的安装方式，而不是 PlugMCP 代理。
此记录未列出必需的环境变量。
@agentcomms/gmail 通过 stdio 在本地运行。
上次检查时间：2026-11-14。 The Gmail MCP server for coding agents: search, read, analyse and draft across inboxes, with sending gated by approval.