pay.sh

pay.sh by its developers enables AI agents and command-line tools to call paid APIs instantly with no sign-up or account, offering simple pay-as-you-go access.

pay-as-you-go API access AI agents no sign-up command-line tools

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What is pay.sh?

pay.sh is a payment infrastructure that lets AI agents and command-line tools call paid APIs instantly with no sign-up, no account, and no API key. It replaces human-centric credential systems (accounts, plans, credit cards) with a single-line payment call. The service works with agents like Claude and Codex, and supports tools like curl through paycurl. It’s designed to bridge the gap between autonomous agent actions and API providers that still require human interaction for payment.

Application scenarios

Agent-driven API calls
AI agents can autonomously pay for and use APIs like weather forecasts or blockchain RPC endpoints without human intervention.
Command-line automation
Developers can run `$ paycurl https://api.weather.ai/forecast` from a terminal to pay for and access an API in one step.
Blockchain node access
Agents can call QuickNode’s JSON-RPC endpoints for 140+ blockchain networks (e.g., solana-mainnet) with per-request pricing and micropayments.
Crypto market data retrieval
Access CoinGecko, DefiLlama, and Alchemy data for prices, DEX pools, and on-chain stats via a single pay-as-you-go API.
Email inbox management for agents
Create and operate dedicated email inboxes programmatically for agent-based tasks like sending, receiving, and workflow automation.
Social media data extraction
Pull profiles, posts, and engagement metrics from TikTok, Instagram, Facebook, and Reddit without account setup.
Document OCR workflows
Extract text and structured data from documents using Alibaba Cloud OCR API with high-precision recognition.

Core Features

No-account payment
Agents and CLI tools can pay for API calls in one line—no sign-up, no API keys, no subscriptions.
Agent-native integration
Works directly with Claude, Codex, and curl, allowing agents to discover, price, and call APIs autonomously.
Pay-as-you-go pricing
Each API call is billed per request, with transparent endpoint-level pricing (e.g., $0.001–$1.00 for QuickNode, $0.01 for Stablecrypto).
Service catalog for agents
A directory of live, pay-per-use APIs organized by category (AI/ML, Maps, Data, Search, Messaging, Compute, etc.) that agents can browse and call.
Per-endpoint pricing
Each service lists its endpoints, price per call, and status (e.g., free tier, metered, stable) so agents know exact costs upfront.
Micropayment support
Supports x402 micropayments and dynamic per-method pricing for granular cost control (e.g., QuickNode’s per-request JSON-RPC).
Programmatic inbox creation
AgentMail enables agents to create and manage email inboxes programmatically without manual account setup.

Target users

AI agent developers who need to integrate paid API calls into autonomous workflows without managing accounts or keys.
Command-line power users who want to call paid APIs directly from a terminal with paycurl and no sign-up friction.
API providers looking to publish services in a format that agents can discover and pay for without human account creation.
Blockchain and crypto developers needing pay-per-request access to node endpoints, market data, and on-chain analytics.

How to use pay.sh?

For agents: Run $ npx @solana/pay claude "buy some water with pay" to let an agent call a paid API instantly.
For CLI tools: Use $ paycurl https://api.weather.ai/forecast to pay for and access an API from the command line.
Browse the catalog: Visit the pay.sh directory to search live services by category (e.g., AI/ML, Maps, Data) and inspect endpoints, prices, and status.
No sign-up required: Simply call the API—payment is handled automatically in the background without creating an account or obtaining an API key.

Pricing and free trial

Pricing is per-call and varies by service. Examples from the catalog:

QuickNode: $0.001–$1.00 per request, with a free tier available.
Stablecrypto/market-data: $0.01 per call, metered.
AgentMail: $0–$10.00 per call, with a free tier.
Alibaba Cloud OCR: $0.001 per call, metered.
Stablesocial/social-data: $0.06 per call, with a free tier.

No subscription or account is needed—users pay only for what they use.

Effect review

pay.sh effectively eliminates the friction of API access for autonomous agents and command-line users. The service catalog is well-organized with transparent per-endpoint pricing, making it easy for agents to discover and pay for exactly what they need. For developers, the ability to call paid APIs in one line without accounts or keys is a genuine time-saver. While the platform is still in its early stages (with 72 listed services across categories like AI/ML and Compute), the integration with Claude, Codex, and curl shows practical real-world utility. The pay-as-you-go model aligns well with agentic workflows, though the long-term reliability will depend on provider adoption and uptime.

Frequently Asked Questions

How does pay.sh let AI agents call paid APIs without sign-up?

It provides a command-line interface that handles payment automatically, so agents can make API calls with a simple command and pay per use.

What payment methods does pay.sh accept?

It accepts credit/debit cards and possibly other digital payment options, processed securely per API call.

Is there any monthly subscription or commitment required?

No, pay.sh is pay-as-you-go with no subscription or upfront commitment; you only pay for the API calls you make.

Which APIs can I access through pay.sh?

It supports a growing list of popular APIs, including AI models, data services, and utilities, all accessible via simple commands.

How does pay.sh ensure secure payment handling?

It uses encrypted transactions and token-based authentication, so your payment details are never exposed to the API providers.

Can I use pay.sh with any command-line tool?

Yes, it's designed for any command-line environment, making it easy to integrate into scripts, CI/CD pipelines, and AI agent workflows.