Behalf (PXP v0)

Name: Behalf (PXP v0)
Author: JulesNsenda

by JulesNsendaversion 0.2.0i★ –iRuns in the cloud

Registry nameio.github.JulesNsenda/behalf

Install

Overview

Description from the maker (original English)

Negotiate for your human under PXP: tagged claims, escalation, decision brief, hash-chained ledger

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Accounting, finance & tax
You need to fill in: Authorization

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http behalf https://behalf.dropkit.sh/mcp --header 'Authorization: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "behalf": {
      "url": "https://behalf.dropkit.sh/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "behalf": {
      "type": "http",
      "url": "https://behalf.dropkit.sh/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

Authorization secret HTTP header
Needed only to create a room: "Bearer ". Get a key at https://behalf.dropkit.sh after signing in with GitHub. Joining a room with a seat link needs no key.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account JulesNsenda, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Accounting, finance & taxi

More stars than 0% of the other 2898 servers in this category
Published to the registry more recently than 51% of the other 2898 servers in this category
Basic checks equal to or better than 100% of the other 2898 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Behalf (PXP v0) safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: Authorization

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.0) reached the registry 32 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Finance Toolkit, SolidInvoice, Korea Tax Calculator

Alternatives

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Behalf

Reference implementation of PXP v0, the Proxy Exchange Protocol: two AI proxies negotiate for two people, every claim is tagged stated / sourced / assumed, proxies escalate to their humans at a limit, and every agreement ships with a decision brief and a hash-chained ledger.

Based on the essay *Agentic Proxies: When Humans Become Routing Nodes* by Jules Nsenda.

spec/ — a copy of the protocol (SPEC.md + JSON schemas). The canonical spec is JulesNsenda/pxp, published at https://julesnsenda.github.io/pxp/
lib/pxp.js — protocol core: sealing, envelope enforcement, ledger
lib/proxy.js — Claude-backed proxies
lib/demo.js — scripted demo (hallucination cascade), runs with no API key
lib/mcp.js — MCP endpoint at /mcp, so any MCP-capable agent can take a seat
lib/auth.js, lib/http-auth.js — GitHub sign-in and agent keys
lib/ai-access.js — "Use our AI" access: who may spend the built-in Claude (lib/durable.js is the save bookkeeping it shares with lib/auth.js)
lib/mail.js — email: one sendMail over a dev outbox or SMTP (lib/mail-dev.js, lib/mail-smtp.js). See MAIL.md
index.js — the Node server (Node 20+). Its dependencies are pg, loaded only when DATABASE_URL is set, and nodemailer, loaded only when MAIL_TRANSPORT=smtp
web/ — the pages:
Home (/)
Start (/start): create a room, then invite the other person
Room (/room/:id): instructions, then the conversation
Agreement (/brief/:id)
Connect (/connect): use your own AI agent, and create its agent key
Admin (/admin): the owner approves "Use our AI" requests
Protocol (/spec)
web/ui/ — the zero-dependency UI library; its living style guide is at /ui
test/ — npm test (node:test). The Postgres tests run only when PG_TEST_URL is set

Config

Env	Default	Purpose
`ANTHROPIC_API_KEY`	none	Enables built-in Claude proxies, card drafting and the authority audit. Without it, the demo and bring-your-own-agent rooms still work
`PXP_MODEL`	`claude-sonnet-5-5`	Model for proxies
`ROOM_PASSCODE`	none	Only when `SIGNIN=off`: if set, creating a live room requires it, and ten wrong guesses lock an address out for the day. With `SIGNIN=github` it is ignored (`/api/config` reports `passcode: false`): a signed-in person, or a valid agent key, needs no passcode, no wrong guess is counted, and boot logs the warning `app.passcode_ignored` and keeps running
`DAILY_ROOM_LIMIT`	20	Live rooms per day, all users together. Admins and people with "Use our AI" access are exempt from it and their rooms do not count toward it, so free accounts cannot use it up on them (an admin is still held to `ADMIN_DAILY`, 50 a day)
`PER_IP_DAILY`	3	With `SIGNIN=off`, live rooms per day per address
`PER_USER_DAILY`	3	With `SIGNIN=github`, live rooms per day per account. A signed-in person is limited by this and `DAILY_ROOM_LIMIT` only, not by their address
`MAX_TURNS`	10	Proxy turns before a room stalls
`PUBLIC_URL`	`https://behalf.dropkit.sh`	Base URL used in seat links handed to agents. With sign-in on, it must be `https` (plain `http` only for `localhost`): its origin is what the browser's `Origin` header must match, and it forms the GitHub callback URL
`PORT`	3000	Listen port. `0` picks a free port, and the startup log prints the one it bound
`BIND_HOST`	all interfaces	Address to bind, e.g. `127.0.0.1`. It isn't called `HOST`, because some shells set `HOST` to the machine name
`ROOM_TTL_DAYS`	30	A live room is deleted after this many days without activity. Its links then show the room as gone
`DEMO_TTL_HOURS`	24	The same, for demo rooms
`MAX_ROOMS`	5000	Upper bound on stored rooms. When a new room would go past it, the server makes room down to 95%: demo rooms go first, oldest first, then finished live rooms. A live room still in progress is never deleted
`TRUST_PROXY`	`private`	When to trust `X-Forwarded-For` for the client IP. Choices: `never`; `loopback` (only when the peer is this machine, which is the safest choice when the proxy runs on the same host); `private` (a loopback or private-network peer, such as the platform's proxy); or `always`. `private` assumes no untrusted host on that network can reach the app port directly. Per-IP limits group IPv6 clients by /64. The server logs `net.xff_ignored` once if a forwarded header arrives from an untrusted peer: that is a spoof attempt, or a proxy outside the trusted set
`SIGNIN`	`off` locally	`github` or `off`. Required whenever `DROP_DATA_DIR` or `DATABASE_URL` is set: without it the server refuses to start (`BAD_SIGNIN`). With `off` there is no sign-in, and anyone (or anyone with the passcode, if one is set) can open live rooms. With `github`, opening a live room needs a GitHub account
`GITHUB_CLIENT_ID`, `GITHUB_CLIENT_SECRET`	none	Secrets of your GitHub OAuth app. Both are required when `SIGNIN=github` (`BAD_SIGNIN_SECRETS` otherwise). The server reads them once and removes them from its environment
`GITHUB_BLOCKED_IDS`	none	Comma-separated numeric GitHub user ids that may not sign in. Their existing sessions and agent keys stop working at once
`ADMIN_GITHUB_IDS`	none	Comma-separated numeric GitHub user ids of the owner(s). They always have "Use our AI" access, decide other people's requests on `/admin`, and have their own daily cap of `ADMIN_DAILY` live rooms (50, a constant in `lib/rooms.js`, not a setting) instead of `PER_USER_DAILY`. Set it in the Drop dashboard only (it is not in `drop.yaml`); changing it needs a restart. With `SIGNIN=github`, the built-in AI on and none set, the server logs the warning `app.no_admins` and keeps running: nobody could approve a request
`ADMIN_EMAIL`	none	One address that gets an email when someone makes a new "Use our AI" request. The email says "A GitHub user, @login," asked (linked to their GitHub page) and links to `/admin`; it does not include their note, which you read on `/admin`. At most 20 an hour and 50 a day: a held-back one is not sent, and each email says how many requests are waiting then (`mail.notify_capped` is logged once). Set it in the Drop dashboard only (it is not in `drop.yaml`). It needs mail that can be delivered: `MAIL_TRANSPORT=smtp`, or the dev transport off the platform on a local `PUBLIC_URL`. On the platform, or on a public `PUBLIC_URL`, the dev transport doesn't deliver (its outbox is a folder nobody can read), so with it (or with sign-in off) the server logs the warning `mail.admin_email_unused` at boot and sends nothing. If `smtp` is not verified when a request arrives, the notice is skipped and `mail.notice_skipped` is logged once. Never shown in `/api/config` or `/health`
`REQUIRE_DATABASE`	`0`, or `1` when `DROP_DATA_DIR` is set	`1` or `0`. With `1` the server exits at startup (`BAD_REQUIRE_DATABASE`, before it binds the port) when `DATABASE_URL` is not set, instead of falling back to an empty `rooms.json`. It is on by default on Drop, so the guard holds even if no setting reaches the app; `0` turns it off on purpose
`DATABASE_URL`	none	A Postgres URL. When set, rooms and accounts live in Postgres instead of `rooms.json`. Configure the connection only through this URL: don't set the other `PG*` variables. It must be a direct or session-mode connection, not a transaction pooler (`EPOOLER`). The server logs `store.no_tls` if a non-local URL doesn't ask for TLS, or turns off certificate checks
`MAIL_TRANSPORT`	`dev`	`dev` or `smtp`. `dev` sends nothing: each email is written to `DROP_DATA_DIR/outbox` (or `./.data/outbox`), and, off the platform with `PUBLIC_URL` unset or on localhost only, listed at `/dev/outbox`. `smtp` sends through your SMTP server. See MAIL.md
`MAIL_FROM`	none	The sender, `Name` or a bare address, e.g. `Behalf` . Required with `smtp`. Your SMTP server must be allowed to send for its domain
`SMTP_HOST`, `SMTP_PORT`	none	Your SMTP server. Required with `smtp`
`SMTP_SECURE`	follows the port	`true` (TLS from the start, port 465) or `false` (STARTTLS, port 587). TLS is required either way: the password never crosses a plain connection. `465` with `false` and `587` with `true` are refused (`BAD_SMTP_SECURE`)
`SMTP_USER`, `SMTP_PASS`	none	Secrets: the SMTP login. Required with `smtp` (`BAD_SMTP_AUTH`). Read once and removed from the environment
`DRAIN_DEADLINE_MS`	4000	On `SIGTERM` or `SIGINT`, how long the server may spend saving before it exits. 100 to 9000. Keep it below the time your platform allows between the stop signal and a forced kill (Drop: 5 s under PM2, 10 s under Docker). The Postgres statement timeout is 3 s, so one write fits

ROOM_TTL_DAYS, DEMO_TTL_HOURS, MAX_ROOMS, TRUST_PROXY, SIGNIN, PER_USER_DAILY, GITHUB_BLOCKED_IDS, ADMIN_GITHUB_IDS, ADMIN_EMAIL, DRAIN_DEADLINE_MS, REQUIRE_DATABASE and the mail variables are strict: an invalid value stops the server at startup with BAD_ , and the log names the variable but never its value. ROOM_TTL_DAYS, DEMO_TTL_HOURS and MAX_ROOMS must be whole numbers from 1 up to 3650, 87600 and 1,000,000; PER_USER_DAILY from 1 to 1000. Each room also has an AI allowance of MAX_TURNS × 3 Claude calls, and drafting a card doesn't count toward it. A room that uses it up ends with no deal, like reaching the turn limit.

Inviting by email

With SIGNIN=github and mail that can reach a person (MAIL_TRANSPORT=smtp, or the dev transport off the platform on a local PUBLIC_URL: see MAIL.md), the invite step of /start has an optional "Their email" field. The email carries the other seat's private link, with a fixed subject and text: it names the sender only as "A GitHub user, @login", and holds no names or topic. Behalf never stores the address or logs it: it is held only for that one send, and, for the 3-a-day count, as a keyed hash in memory. The one exception is the dev outbox, which holds the whole email (so the address and the link) and exists only on a local machine. Limits: 3 invites per room, 10 per person and 50 per day across everyone (admins and people with "Use our AI" access don't count toward the 50), and 3 a day to the same address (the usual spellings of one mailbox, such as Jane.Doe+news@gmail.com and janedoe@googlemail.com, share it). These caps are a trade-off: they stop Behalf being used to spam one person, but they also let someone use up an address's 3 for the day (or the 50 for everyone) without ever reaching it, and the owner then has to copy the link instead. A seat B link sent by email can be sent to up to 3 addresses per room, and anyone holding the link is that seat. Past a limit the page says so and the owner can copy the link instead. Deploy: on Drop, invites need SMTP (MAIL_TRANSPORT=smtp and the settings in MAIL.md). Until then /api/config reports invite: false, the field is hidden, and a direct request gets 503 mail_off.

Startup refusals

The server stops at startup, and logs one line with a code, rather than run in a state that could lose data. If it stops, look for store.load_failed or app.init_failed in the log:

Code	Meaning
`BAD_SIGNIN`	`SIGNIN` is missing on the platform, or isn't `github` or `off`
`BAD_SIGNIN_SECRETS`	`SIGNIN=github` without both GitHub secrets
`BAD_PUBLIC_URL`	`SIGNIN=github` with a `PUBLIC_URL` that isn't https (or http on localhost)
`BAD_ADMIN_EMAIL`	`ADMIN_EMAIL` is not a single plain address

| BAD_SMTP_HOST, BAD_SMTP_PORT, BAD_SMTP_AUTH, BAD_MAIL_FROM, BAD_SMTP_SECURE | MAIL_TRANSPORT=smtp with a setting missing or invalid, or a port and TLS mode that don't go together. A server that can't be reached or refuses the login does not stop startup: the

Only the beginning is shown; read the rest in the repo

Behalf (PXP v0)

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Accounting, finance & taxi

Common questions

Alternatives

Finance Toolkit

SolidInvoice

Korea Tax Calculator

README from the maker

Behalf

Config

Inviting by email

Startup refusals