Synthex Forge — x402 Paid Agent Services

Name: Synthex Forge — x402 Paid Agent Services
Author: hermeschoosenone-debug

by hermeschoosenone-debugversion 1.0.0i★ 0iRuns in the cloud

Registry namecom.synthexforge.x402/paid-agent-services

Install

Overview

Description from the maker (original English)

Paid agent services settled in USDC on Base via x402. Signed, verifiable, and free to verify.

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 checksi3 of 3 passedChecked from public information; code not scanned yet
UsageiEarly★ 0

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: Other

Install

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

Before you install

Basic checks: 3 of 3 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

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 …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://x402.synthexforge.com/mcp

Run this in your terminal

claude mcp add --transport http paid-agent-services https://x402.synthexforge.com/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "paid-agent-services": {
      "url": "https://x402.synthexforge.com/mcp"
    }
  }
}

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": {
    "paid-agent-services": {
      "type": "http",
      "url": "https://x402.synthexforge.com/mcp"
    }
  }
}

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.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://x402.synthexforge.com/mcp

Menu names can differ slightly by plan and over time.

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

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 10, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain x402.synthexforge.com (the registry checks domain ownership)
✓ Pass
Still maintained
Code last changed 20 days ago
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 469 ms (HTTP 200)
– Not applicable
Sign-in with OAuth
No sign-in needed
… 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 Otheri

More stars than 0% of the other 19086 servers in this category
Published to the registry more recently than 68% of the other 19086 servers in this category
Basic checks equal to or better than 100% of the other 19086 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 Synthex Forge — x402 Paid Agent Services 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 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 20 days ago, and the latest version (1.0.0) reached the registry 20 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: World Monitor, Claude Flow, Tldraw

Alternatives

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Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Runs in the cloud✓ worldmonitor.app

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Claude Flow

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Tldraw

Draw and visually collaborate with your agents on tldraw's canvas.

by tldrawWidely used★ 51.4KUpdated 8 months ago

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Install

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.

synthex-x402

Client SDK for Synthex Forge's paid x402 services. USDC on Base mainnet.

One call. The 402 → EIP-3009 signing → retry loop is handled for you, and verify() re-checks the Ed25519 signature on the answer locally, with no network call and no cost.

from synthex_x402 import call, verify

result = call("/v1/preflight", {"target": "example.com"}) print(result"body") # 'go' | 'caution' | 'avoid' | 'unknown' print(verify(result["body"])["valid"]) # True — re-checked locally

import { call, verify } from 'synthex-x402'

const result = await call('/v1/preflight', { target: 'example.com' }) console.log(result.body.verdict) // 'go' | 'caution' | 'avoid' | 'unknown' console.log(verify(result.body).valid) // true — re-checked locally

Install

pip install synthex-x402          # Python 3.9+

npm install synthex-x402 # Node 18+

Try it without spending anything

python3 -m synthex_x402 --mock     # Python

cd sdk/typescript && npm install && npm run mock

The mock runs the entire flow — 402, instruction parsing, signing, retry, signed result, local verification — against a local mock server with a throwaway key. Nothing leaves your machine and nothing is charged.

The remote MCP server

The same tools are available over the MCP streamable-HTTP transport:

POST https://x402.synthexforge.com/mcp

curl -X POST https://x402.synthexforge.com/mcp \

-H 'Content-Type: application/json' \ -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Manifest: https://x402.synthexforge.com/.well-known/mcp.json
A2A agent card: https://x402.synthexforge.com/.well-known/agent.json
Registry: com.synthexforge.x402/paid-agent-services on the official MCP Registry (registry.modelcontextprotocol.io)

The services

Every tool is a thin adapter over the same paid HTTP route, so the MCP surface and the HTTP surface can never disagree about price or behaviour.

Tool	Route	Price	What it answers
`preflight`	`POST /v1/preflight`	$0.01	Should I pay this counterparty?
`edge_prior`	`POST /v1/edge/prior`	$0.05	What has already been tested here?
`x402_index`	`POST /v1/x402/index`	$0.02	What does the agent economy offer, and does it work?
`data_validate`	`POST /v1/data/validate`	$0.02	Is this payload valid against this schema?
`policy_check`	`POST /v1/policy/check`	$0.10	Is this action allowed under this policy?
`rates_reference`	`GET /v1/rates/reference`	$0.01	What is this amount worth, as-of stamped?
`verify_signature`	`POST /v1/settlement/verify`	free	Re-verify a signed receipt you hold.
`health`	`GET /health`	free	Is the service up, on which network?

Payment rail


Protocol	x402 v2, `exact` scheme
Asset	USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`)
Network	Base mainnet (`eip155:8453`)
Method	EIP-3009 `transferWithAuthorization`
`payTo`	`0xc8fF67FAE72596478599EAAcfad8656fAe1113c8`

Configuration

Variable	Meaning
`SYNTHEX_X402_PRIVATE_KEY`	Your EIP-3009 signing key. Never logged, never returned.
`SYNTHEX_X402_KEY_FILE`	Path to a file containing the key.

With no key configured, call() does not pay — it returns the payment_required instructions so you can decide.

Documentation

Six how-to guides, served live at https://x402.synthexforge.com/docs:

Verify a settlement receipt on Base
Check an endpoint before paying it
Validate a payload before trusting it
Read a reference rate with staleness
Buy and redeem a pass
Prove a verdict was ours

Layout

sdk/python/          the Python package (PyPI: synthex-x402)

sdk/typescript/ the TypeScript package (npm: synthex-x402) glama.json Glama registry metadata

Development

# Python

cd sdk/python && pip install -e . && python3 -m synthex_x402 --self-test

TypeScript

cd sdk/typescript && npm install && npm run self-test

Both self-tests run offline and assert, among other things, that the EIP-3009 digest is byte-identical to the x402 library's own.

License

MIT

Synthex Forge — x402 Paid Agent Services

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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 Otheri

Common questions

Alternatives

World Monitor

Claude Flow

Tldraw

README from the maker

synthex-x402

Install

Try it without spending anything

The remote MCP server

The services

Payment rail

Configuration

Documentation

Layout

Development

TypeScript

License