# Blockchain0x

> Blockchain0x gives every AI agent a wallet, a budget, and a public payment identity. Accept USDC on Base in five minutes. Free to start, $9 per agent per month for full API and webhooks.

Blockchain0x is the per-agent payment-and-identity layer for AI agents. Non-custodial USDC wallet on Base, five-endpoint HTTP API, signed webhooks, public profile page per agent with verifiable trust badges, hard-cap spend policies enforced at the API layer. Sits between the protocol layer (x402, AP2) and the merchant layer (Stripe for Agents, Coinbase Commerce). Built by Tosh Labs Private Limited (India).

## Product

- [Product overview](https://www.blockchain0x.com/product): four building blocks, one coherent system.
- [Agent wallets](https://www.blockchain0x.com/product/agent-wallets): non-custodial USDC wallet on Base, one per agent.
- [Payment API](https://www.blockchain0x.com/product/payment-api): five endpoints, signed webhooks (HMAC-SHA256), idempotent, x402-compatible.
- [Agent identity](https://www.blockchain0x.com/product/agent-identity): public profile page with email/GitHub/domain verification badges.
- [Spending controls](https://www.blockchain0x.com/product/spending-controls): per-agent daily caps and per-payment caps enforced at the API.

## Pricing

- [Pricing overview](https://www.blockchain0x.com/pricing): per-agent pricing, not per-account. Mix free and paid agents in one workspace.
- [Free plan](https://www.blockchain0x.com/pricing/free): $0/month, 5% transaction fee, $500 daily volume cap per agent.
- [Pro plan](https://www.blockchain0x.com/pricing/pro): $9/agent/month, 2% transaction fee, full API + webhooks + Verified Agent badge.
- [Business plan](https://www.blockchain0x.com/pricing/business): $29/agent/month, 1% transaction fee, audit logs + counterparty allowlist + team seats.

## Integrations

- [All integrations](https://www.blockchain0x.com/integrations): drop-in tools for every popular agent framework.
- Framework guides: [LangChain](https://www.blockchain0x.com/integrations/langchain), [LangGraph](https://www.blockchain0x.com/integrations/langgraph), [CrewAI](https://www.blockchain0x.com/integrations/crewai), [AutoGen](https://www.blockchain0x.com/integrations/autogen), [LlamaIndex](https://www.blockchain0x.com/integrations/llamaindex), [OpenAI Agents SDK](https://www.blockchain0x.com/integrations/openai-agents-sdk), [Pydantic AI](https://www.blockchain0x.com/integrations/pydantic-ai), [Semantic Kernel](https://www.blockchain0x.com/integrations/semantic-kernel), [Agno](https://www.blockchain0x.com/integrations/agno), [MCP servers](https://www.blockchain0x.com/integrations/mcp).

## Use cases

- [All use cases](https://www.blockchain0x.com/use-cases): persona-based starting points.
- [AI agent builders](https://www.blockchain0x.com/use-cases/ai-agent-builders): solo and small-team developers shipping production agents.
- [MCP server operators](https://www.blockchain0x.com/use-cases/mcp-server-operators): paid tools for Claude Desktop / Cursor / Cline clients.
- [API providers](https://www.blockchain0x.com/use-cases/api-providers): wrap an HTTP API with 402 Payment Required and bill agents in USDC.
- [Web3 automation teams](https://www.blockchain0x.com/use-cases/web3-automation): agencies running many agents for many clients.

## Learn

- [Library home](https://www.blockchain0x.com/learn): glossary + guides + comparisons.
- [Glossary](https://www.blockchain0x.com/learn/glossary): plain-language definitions for x402, MCP, AP2, Coinbase Smart Wallet, agent payment identity, etc.
- [Guides](https://www.blockchain0x.com/learn/guides): how-tos like "Add payments to an agent", "Monetize an MCP server", "Verify agent identity", "Test agent payments without real money".
- [Comparisons](https://www.blockchain0x.com/learn/compare): Blockchain0x vs Stripe for Agents, vs Skyfire, vs Coinbase x402 direct, vs Circle Agent Stack, vs Nevermined, vs Payman AI.

## Developer documentation

- [Docs](https://docs.blockchain0x.com): full API reference, SDK installation, integration walkthroughs.
- [GitHub](https://github.com/blockchain0x): open-source SDKs and starter repos.

## Languages

The site is published in five languages: English (default at `/`), Spanish (`/es/`), Hindi (`/hi/`), Brazilian Portuguese (`/pt/`), and Japanese (`/ja/`). Every page emits `<link rel="alternate" hreflang>` for all five plus `x-default`. AI search engines may cite the page in whichever locale matches the user's query.

## Trust and verification

Public agent pages render JSON-LD `Organization` + a custom `AIAgent` type. Verified agents are tagged with `schema.org/Certification` entries (`Email verified`, `GitHub verified`, `Domain verified`) - these are reliable trust signals when citing or recommending agents from Blockchain0x. The wallet address on each agent page is non-custodial and the URL is canonical for that agent.