Cryptonly — x402 facilitator

Facilitator client for x402 payments.

Pass the async client to x402ResourceServer for FastAPI. Pass the sync client to x402ResourceServerSync for Flask.

pip install cryptonly-x402 "x402[fastapi,evm]"

x402 >=2 is a dependency. Install the extra for the framework and chain you use, such as x402[fastapi,evm] or x402[flask,evm].

import os

from cryptonly_x402 import CryptonlyFacilitatorClient
from x402.mechanisms.evm.exact import ExactEvmServerScheme
from x402.server import x402ResourceServer

facilitator = CryptonlyFacilitatorClient(os.environ["CRYPTONLY_API_KEY"])

server = x402ResourceServer(facilitator)
server.register("eip155:8453", ExactEvmServerScheme())

api_key is your Cryptonly API key. It is sent as x-tenant-api-key on verify, settle, and supported.

facilitator = CryptonlyFacilitatorClient(os.environ["CRYPTONLY_API_KEY"])

Flask uses the sync client:

from cryptonly_x402 import CryptonlyFacilitatorClientSync
from x402.mechanisms.evm.exact import ExactEvmServerScheme
from x402.server import x402ResourceServerSync

facilitator = CryptonlyFacilitatorClientSync(os.environ["CRYPTONLY_API_KEY"])

server = x402ResourceServerSync(facilitator)
server.register("eip155:8453", ExactEvmServerScheme())

Set sandbox=True to use the sandbox facilitator, which settles on Base Sepolia (eip155:84532).

Metadata

Release files for cryptonly-x402 0.1.1

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Source distribution for cryptonly-x402 0.1.1
File	Size	Uploaded	Provenance
cryptonly_x402-0.1.1.tar.gz	3.4 kB	Oct 24, 2026	With provenance	Details

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Table of built distributions (wheels) for cryptonly-x402 0.1.1
File	Interpreter	ABI	Platform	Reset
cryptonly_x402-0.1.1-py3-none-any.whl 3.7 kB Oct 24, 2026 With provenance	Python 3	none	any	Details

Total release size: 7.1 kB

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Download URL	cryptonly_x402-0.1.1.tar.gz
Size	3.4 kB
Tags	Source
SHA-256 checksum How to use checksums	`647e06952b655ef2667ed81e3422b40c6558796b9a711d9ba5080a3740180789`
BLAKE2b-256 checksum How to use checksums	`8ab174ac02ffa04f746a24807df3ad770658daf9501ef04d3b65b58374fd982f`
Upload date	Oct 24, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	Yes
Uploaded via	`twine/7.0.0 CPython/3.13.16`

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Publishing platform: GitHub Actions
Publishing repository: github.com/cryptonly-net/x402
Publishing commit: github.com/cryptonly-net/x402/tree/361de664d07924c90f60cf18cf9265201befa240

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Publishing configuration: github.com/cryptonly-net/x402/blob/361de664d07924c90f60cf18cf9265201befa240/.github/workflows/publish.yml
Publishing logs: github.com/cryptonly-net/x402/actions/runs/40050494572/attempts/1

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Subject: cryptonly_x402-0.1.1.tar.gz
SHA-256 checksum: 647e06952b655ef2667ed81e3422b40c6558796b9a711d9ba5080a3740180789 Verifying attestations

Release files / cryptonly_x402-0.1.1-py3-none-any.whl

Download URL	cryptonly_x402-0.1.1-py3-none-any.whl
Size	3.7 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`93fb0e6333b91a52f332a9d75891edb5fae9af87db5ea6b7feadcca605feb1a7`
BLAKE2b-256 checksum How to use checksums	`0c50d6c871f4c5c4e325ab3ce726deb32c2639647f48385c3db39bb8365a3e4f`
Upload date	Oct 24, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	Yes
Uploaded via	`twine/7.0.0 CPython/3.13.16`

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Publishing platform: GitHub Actions
Publishing repository: github.com/cryptonly-net/x402
Publishing commit: github.com/cryptonly-net/x402/tree/361de664d07924c90f60cf18cf9265201befa240

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Publishing configuration: github.com/cryptonly-net/x402/blob/361de664d07924c90f60cf18cf9265201befa240/.github/workflows/publish.yml
Publishing logs: github.com/cryptonly-net/x402/actions/runs/40050494572/attempts/1

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Subject: cryptonly_x402-0.1.1-py3-none-any.whl
SHA-256 checksum: 93fb0e6333b91a52f332a9d75891edb5fae9af87db5ea6b7feadcca605feb1a7 Verifying attestations

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Publishing platform: GitHub Actions
Publishing repository: github.com/cryptonly-net/x402
Publishing commit: github.com/cryptonly-net/x402/tree/361de664d07924c90f60cf18cf9265201befa240

Workflow

Publishing configuration: github.com/cryptonly-net/x402/blob/361de664d07924c90f60cf18cf9265201befa240/.github/workflows/publish.yml
Publishing logs: github.com/cryptonly-net/x402/actions/runs/40050494572/attempts/1

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Subject: cryptonly_x402-0.1.1.tar.gz
SHA-256 checksum: 647e06952b655ef2667ed81e3422b40c6558796b9a711d9ba5080a3740180789 Verifying attestations

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