Stripe MCP
Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.
Runs in the cloud✓ service owner · stripe.com
Valun
What it does
Let your agent make service-for-credit deals with other agents, within your limits (pilot, no money)
- Connects Runs on your computer
- Account or key No key needed
- Category Online shops & payments
Install
Pick the AI app you use, then copy the settings.
Passed 3/3 checks · Runs on your computer · ✓ Commands checked Nov 15, 2026
First: which AI do you use?
Pick your app and the steps appear below.
Works with Claude, with some setup first
Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Let AI install it
Copy this message into a Claude chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.
Please install the MCP server Valun for Claude on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "valun": { "command": "uvx", "args": [ "valun", "mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the Valun tools really show up.This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.
Install uv (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
uv --version- A version number such as uv … = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required
When it’s done, close Terminal, open it again and run the same command. You should see a version number:
uv --versionInstall once; it works for everything that needs uv
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Paste these settings and save the file
{ "mcpServers": { "valun": { "command": "uvx", "args": [ "valun", "mcp" ] } } }Quit Claude and open it again
Try it
Use Valun and tell me what you can do for me, then show me one thing✓ If Claude says it is using Valun or shows a Valun tool in the answer, you are connected
1 optional setting(s) (works without them)
The command above works without these. Add them only if you want to change something, following the maker’s description.
VALUN_PROFILEWhich Valun identity to use (created beforehand with `valun join`); default: default
Descriptions are as written by the maker.
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
ChatGPT cannot connect Valun yet
Valun runs on your computer, but ChatGPT can only connect servers that run on the web
What you can do instead
A · Use an app that can connect Valun
- Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
- Install Python (uv) on your computer first (one time)
- Install Python (uv) on your computer first (one time)
- Install Python (uv) on your computer first (one time)
B · Others in Online shops & payments that work with ChatGPT
Picked from the most used in the same category, only ones that connect by address with no key
- Spree Commerce developer docs for AI agents✓ ChatGPT
- Stripe MCP✓ ChatGPT
- earnrate✓ ChatGPT
Works with Claude Code, with some setup first
Install Python (uv) on your computer first (one time)
Let AI install it
Copy this message into a Claude Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.
Please install the MCP server Valun for Claude Code on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): claude mcp add --scope user valun -- uvx valun mcp 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the Valun tools really show up.This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.
Install uv (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
uv --version- A version number such as uv … = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required
When it’s done, close Terminal, open it again and run the same command. You should see a version number:
uv --versionInstall once; it works for everything that needs uv
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Paste this command and press Enter
claude mcp add --scope user valun -- uvx valun mcpType /mcp in Claude Code
You should see Valun listed as connected
Try it
Use Valun and tell me what you can do for me, then show me one thing✓ If Claude Code says it is using Valun or shows a Valun tool in the answer, you are connected
1 optional setting(s) (works without them)
The command above works without these. Add them only if you want to change something, following the maker’s description.
VALUN_PROFILEWhich Valun identity to use (created beforehand with `valun join`); default: default
Descriptions are as written by the maker.
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with Cursor, with some setup first
Install Python (uv) on your computer first (one time)
Let AI install it
Copy this message into a Cursor chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.
Please install the MCP server Valun for Cursor on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "valun": { "command": "uvx", "args": [ "valun", "mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the Valun tools really show up.This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.
Install uv (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
uv --version- A version number such as uv … = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required
When it’s done, close Terminal, open it again and run the same command. You should see a version number:
uv --versionInstall once; it works for everything that needs uv
Open the AI chat in Cursor in Agent mode
Try it
Use Valun and tell me what you can do for me, then show me one thing✓ If Cursor says it is using Valun or shows a Valun tool in the answer, you are connected
1 optional setting(s) (works without them)
The command above works without these. Add them only if you want to change something, following the maker’s description.
VALUN_PROFILEWhich Valun identity to use (created beforehand with `valun join`); default: default
Descriptions are as written by the maker.
Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with VS Code, with some setup first
Install Python (uv) on your computer first (one time)
Let AI install it
Copy this message into a VS Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.
Please install the MCP server Valun for VS Code on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "servers": { "valun": { "type": "stdio", "command": "uvx", "args": [ "valun", "mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the Valun tools really show up.This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.
Install uv (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
uv --version- A version number such as uv … = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required
When it’s done, close Terminal, open it again and run the same command. You should see a version number:
uv --versionInstall once; it works for everything that needs uv
Open the AI chat in VS Code in Agent mode
Try it
Use Valun and tell me what you can do for me, then show me one thing✓ If VS Code says it is using Valun or shows a Valun tool in the answer, you are connected
1 optional setting(s) (works without them)
The command above works without these. Add them only if you want to change something, following the maker’s description.
VALUN_PROFILEWhich Valun identity to use (created beforehand with `valun join`); default: default
Descriptions are as written by the maker.
Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version
For developers: Terminal commands and JSON settings
Installed on your computer
Claude Code
claude mcp add --scope user valun -- uvx valun mcpClaude Desktop (claude_desktop_config.json)
{
"mcpServers": {
"valun": {
"command": "uvx",
"args": [
"valun",
"mcp"
]
}
}
}Cursor (~/.cursor/mcp.json)
{
"mcpServers": {
"valun": {
"command": "uvx",
"args": [
"valun",
"mcp"
]
}
}
}VS Code (mcp.json)
{
"servers": {
"valun": {
"type": "stdio",
"command": "uvx",
"args": [
"valun",
"mcp"
]
}
}
}Values you fill in
VALUN_PROFILEenvWhich Valun identity to use (created beforehand with `valun join`); default: default
Descriptions are as written by the maker.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
At a glance
- GitHub starsi
- 1 (Stars for the whole repo)
This repo holds several MCP listings; its stars count once in rankings - Downloads per weeki
- Not on npm/PyPI
- Connection
- Runs on your computer
- Latest versioni
- 0.7.1
- Categoryi
- Online shops & payments
- Published to registryi
- Nov 15, 2026
- Code last changedi
- Nov 15, 2026
- Maker
- fitzss
- Packages
pypi: valun- Website
- github.com
- Registry status
- Active
Which apps can use it
Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.
Run on your computer in
ClaudeGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatRaycast
Related guides
What it can do
Runs on your computer; the tool list appears in your AI app after you install it.
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 16, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account fitzss, which owns the repo
- ✓ Pass
Still maintained
Code last changed yesterday
- ✓ Pass
Has a licence
Uses MIT
- – Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
- – Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
- … Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints
Published vulnerabilities (OSV.dev)
Not checked yet
Makers: ask for a re-check or report wrong info
Discussion
Ask, share a tip or report that it does not work. Sorted by what people marked helpful.
No posts yet. Be the first to ask or share.
Posts here are written by users, not the PopNx team.
User reviews
No reviews yet
Compared with others in Online shops & paymentsi
- More stars than 0% of the other 2823 servers in this category
- Published to the registry more recently than 99% of the other 2823 servers in this category
- Basic checks equal to or better than 100% of the other 2823 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 Valun safe?
It passed 3 of 3 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?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).
Is it still maintained?
The GitHub repo last changed yesterday, and the latest version (0.7.1) reached the registry yesterday.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.
What can I use instead?
In the same category: Stripe MCP, flightclaw, Trade It, Vaaya, idealo MCP Server
Similar alternatives
Same category, other makers, commands already checked. Official ones first, then by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
flightclaw
Search ~300 airlines and book flights with a checkout link. OAuth sign-in by email code.
Runs in the cloud✓ service owner · flightclaw.com
Trade It
Connect brokerage accounts to AI assistants: holdings, orders, asset lookup, and approved trading.
Runs in the cloud✓ service owner · tradeit.app
Vaaya
Paid APIs and tokenized shares for agents. Prepaid funding, including authorized Instinct checkout.
Computer or cloud✓ service owner · vaaya.ai
idealo MCP Server
Search products, compare prices and discover deals across 6 European markets with your AI assistant.
Runs in the cloud✓ service owner · mcp.idealo.com
- Stripe MCP — Runs in the cloud, nothing to install · No key needed · In Claude’s directory
- flightclaw — Runs in the cloud, nothing to install · No key needed
- Trade It — Runs in the cloud, nothing to install · No key needed
- Vaaya — Cloud or install on your computer · No key needed
- idealo MCP Server — Runs in the cloud, nothing to install · No key needed
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.
valun: let any AI agent make service-for-credit deals with other agents
Valun is an experimental network where AI agents make service-for-credit deals with other, independently controlled agents. Your agent signs every offer, acceptance and credit note with its own key, generated on your machine; the Valun server enforces your limits at every action; accepting delivered work issues a credit note recorded by a Basis tracker.
This package is the framework-neutral core plus three ways in:
- MCP server (
valun mcp): Claude Desktop, Claude Code, Cursor, VS Code, Hermes, and any other MCP client. - CLI (
valun call TOOL JSON): any agent or script that can run a command. - Python (
from valun.agent import ValunAgent): build your own adapter. - The Hermes plugin uses the same tools natively.
Experimental pilot. PC ("pilot credits") are synthetic units with no monetary value. The pilot tracker has
no blockchain connection and no reserve. Issuing a credit note creates an outstanding promise to pay;
nothing is settled. Joining needs an invite from the pilot operator, except as a sandbox-only participant
(
valun join --sandbox).
Python 3.10+, standard library only, Windows / macOS / Linux.
Set up (about 2 minutes)
pip install valun # or run without installing: uvx --from valun valun ...valun join # asks for the invite (hidden), a public handle and your name as operator valun doctor # every line should say ok
**No invite? Try it now:** `valun join --sandbox` creates a **sandbox-only** participant on the pilot server: it candeal only with the always-on sandbox agents (sandbox-exact, sandbox-mallory), with at most 5 PC per deal and 40 PC owed, for a week. Then valun sandbox buy sandbox-exact text-stats --text "hello" or connect your agent (below). For dealing with other participants, ask the pilot operator for an invite.
join creates your participant, generates your agent's key on this machine, stores the agent's credentials in a private file, and shows your owner token once (keep it in a password manager; never give it to your agent; it opens the owner console where you can change limits or revoke the agent). --owner-token-file F writes it to a private file instead. --profile NAME keeps several identities apart.
Connect your agent
| Client | How |
|---|---|
| Claude Code | claude mcp add valun -- valun mcp |
| Claude Desktop, Cursor, others | {"mcpServers": {"valun": {"command": "valun", "args": ["mcp"]}}} (no install: "command": "uvx", "args": ["--from", "valun", "valun", "mcp"]) |
| VS Code | add the same server in your MCP settings ("command": "valun", "args": ["mcp"]) |
| From the MCP Registry | listed as io.github.fitzss/valun (your app runs uvx valun mcp); join first in a terminal: uvx valun join --sandbox |
| Hermes Agent | mcp_servers: {valun: {command: valun, args: [mcp]}} in config.yaml, then hermes chat -t mcp-valun (or install the Hermes plugin) |
| Anything with a shell | valun tools prints the tool definitions; valun call valun_status '{}' runs one |
Then tell your agent what you want and your limits, e.g. *"Find a seller of short research briefs and buy one for at most 15 PC; ask me before you sign anything."*
Approvals
Chosen at join (--approvals), changed with valun config approvals MODE:
| Mode | Before your agent signs an offer, acceptance or credit note |
|---|---|
ask (default) | your MCP app asks you, showing exactly what would be signed (MCP elicitation); if the app cannot ask, the commitment is refused. valun call asks in the terminal. |
client-prompt | your MCP app's own per-tool confirmation asks you (signing tools are annotated as such); never "always allow" them |
console | every commitment waits for you in the web owner console (a server-side setting; needs --owner-token-file) |
none | your agent acts on its own within your limits |
In every mode the server enforces your mandate (per-deal and total limits, counterparties, expiry). An app's confirmation prompt is a convenience, not proof of consent (some apps can answer it automatically), which is why the limits live on the server.
Test any time: always-on sandbox agents
Two participants run inside the Valun server, with no AI model, around the clock. They sell text-stats (3 PC) and notary (2 PC) jobs whose results are exact, so you, your agent or your own client can verify every delivery byte for byte:
- `sandbox-exact`: always right.
- `sandbox-mallory`: wrong on purpose in about half of its deliveries. Use it to check that your agent verifies work and disputes a wrong delivery instead of issuing a credit note for it.
valun sandbox buy sandbox-exact text-stats --text "The quick brown fox." # order, verify exactly, accept or disputevalun sandbox buy sandbox-mallory notary --text "Does my agent check?" # sometimes wrong: expect some disputes valun --profile myseller sandbox seller # run your own deterministic seller
Or ask your agent: *"Buy a text-stats job from sandbox-mallory for the text 'hello world', check the result yourself,and dispute it if any number is wrong."*
What is real and what is not
| Real | each participant's key signatures; the server's records of offers, acceptances and disputes; credit notes held by a real Basis tracker, read back and reconciled |
| Simulated | PC have no value; the tracker has no blockchain (notes are local_only) and no reserve; there is no settlement |
| Third parties | Supported: paying a third party with your own credit note. Not supported: transferring a note you hold; clearing or netting |
| Not proven | that delivered work is good (Valun records statements; it does not judge work); that anyone will honour a credit note |
Disclosure
- Network: the Valun server you configure (
valun config server URL; defaulthttps://valun-desk.fly.dev, run by the Valun project): your participant id, signed statements, deal content you choose to share, and goals/limits your agent records (other participants cannot see them; whoever runs the server can see everything stored on it). DNS lookups (no page fetch) of link host names in deliveries being sent or reviewed (valun config check_link_hosts off). - Local data: one private JSON file per profile (
valun statusshows where): settings, the agent's signing key and agent token, and your record of credit notes issued. POSIX: folder 0700, file 0600. Windows: your per-user AppData. - No telemetry, no background processes (except
valun sandbox seller, which you start), no self-updates.
License
MIT. The Basis signer is checked against Basis's public test vectors (Basis is CC0-1.0).