X402 Python Packages

sester

x402-style metering, quota, fail-closed policy and hash-chain receipts for AI-agent APIs — one ASGI middleware

apiguru-mcp

Live Amazon data for AI agents: MCP server, Claude/Codex skill and keyless x402 API. Product details, reviews, search, best-sellers, deals, offers/stock, sellers across 20 marketplaces.

knos

The neutral meter for AI agent work: neither side keeps the count.

witan-sdk

Python client, CLI and local node for WITAN, the agent-to-agent knowledge market. pip install witan-sdk, or run the node as a container: ghcr.io/kor-jongwon/witan-node

grantex

grantex is the identity, authorization, and audit infrastructure for AI agents — the "OAuth moment" for the agentic internet. We provide a universal SDK and cloud service that lets any AI agent act on behalf of a human with scoped, revocable permissions, cryptographic identity, and an immutable audit trail. Developers integrate in minutes.

ddg-agent-services-mcp

Pay-per-call x402 gateway for AI agents — MCP server + OpenAI-compatible API for agent tools, market data, RPC, and MCP security audits. Pay in USDC on Base, no account.

agentscore-commerce

AgentScore Commerce: Python merchant SDK for agentic commerce, covering identity, payment, discovery and Stripe multichain.

inferrail

Self-hosted OpenAI/Anthropic-compatible gateway: give each AI agent run a dollar budget, enforced before the provider, with a payload-free per-run cost record.

agentscore-py

AgentScore SDK: Python client for the AgentScore APIs.

grantex-openai-agents

grantex is the identity, authorization, and audit infrastructure for AI agents — the "OAuth moment" for the agentic internet. We provide a universal SDK and cloud service that lets any AI agent act on behalf of a human with scoped, revocable permissions, cryptographic identity, and an immutable audit trail. Developers integrate in minutes.

grantex-crewai

grantex is the identity, authorization, and audit infrastructure for AI agents — the "OAuth moment" for the agentic internet. We provide a universal SDK and cloud service that lets any AI agent act on behalf of a human with scoped, revocable permissions, cryptographic identity, and an immutable audit trail. Developers integrate in minutes.

csoai-gspc

CSOAI Ltd — Council of AI. GSPC AI-behaviour measurement, signed evidence and free verification. Evidence bundles and provider-change feeds. Measurement, not certification.

blockrun-llm

Python SDK for BlockRun — every frontier model, pay-per-call with USDC. OpenAI-compatible. Zero rate limits.

madeonsol-x402

Python SDK for MadeOnSol x402 API — LangChain & CrewAI tools included

agent-security-gate-x402

The Zero-Trust Safety & Settlement Rail for Autonomous AI Agents. Sub-10ms deterministic guardrails, key leak defense, and cryptographic Proof-of-Safety attestations via x402 on Base ($0.002).

agent-security-harness

AI agent security harness, adversarial testing: 640 executable tests in the v4.26.1 release, across MCP, A2A, x402/L402, decision governance, benchmark integrity, human-in-the-loop, skill supply chain. Four target shapes: a verdict must be able to be wrong AND to be right. OWASP Agentic v1.1 T1-T17, AIUC-1 19/20 (2026-Q1/Q2 set), NIST AI 800-2.

aifinpay-agent

Unified agent-economy SDK for autonomous AI agents — chain-opaque AiFinPayAgent surface (call/balance/verify) over Polygon and Solana execution environments. Non-custodial, x402-native.

tamga-protocol

Encrypted, portable, tamper-evident agent state — identity + memory + verifiable work receipts that survive the host. WASI 0.3, default-deny, simnet. PyPI: tamga-protocol

forgeintel-sdk

Runnable x402 paid APIs instrumented with Forge: Node (Express) and Python (FastAPI)

feeless402

Feeless x402 micropayments for AI agents — self-custodied XNO wallet, pay-per-call client, merchant server with railHint, PoW-gated faucet, MCP server

inamprotocol

Verify before your agent pays: x402 payments only reach agents whose wallet and countersigned work history check out. Open receipts + reputation for AI agents.

sra-riskgate

Risk checks for stablecoin and AI-agent payments: rule pre-filter SDK with x402 and Coinbase AgentKit integrations, plus benchmark evaluation scripts

crewai-true402

CrewAI tools: pre-trade rug/honeypot & address safety for Base AI agents, pay-per-call over x402 (USDC, no API key)

twzrd-receipt-verifier

Offline verifier for TWZRD receipts: AO-Receipt V7 (earlier V5/V6 still verify) and genesis cNFT receipts. npm + PyPI.