Tools · Agent services & marketplaces
PPQ.AI (PayPerQ)
Pay-per-query access to hundreds of frontier models over Lightning / L402 — no account, no API key, roughly a cent and a half a query.
What it is
PPQ.AI (PayPerQ) is a gateway to hundreds of frontier chat, image, video, and audio models (OpenAI, Anthropic, Perplexity, Meta, and more) that you can pay for per request over Lightning / L402 with no account or API key required. Average query cost is around 1.5¢, with top-ups from about 10¢. It is another live instance of “an agent pays for its own inference” — the simplest on-ramp for an agent to buy frontier-model calls without provisioning provider accounts.
It also publishes a /llms.txt and an API surface designed to be consumed directly by agents.
When to use it
- Quick, accountless access to many models behind one pay-per-call endpoint.
- Agents that need to buy inference on demand without managing per-provider API keys.
- Lightning-native metering of model usage.
Quick start
Use the no-account L402 flow or top up a balance, then call the API documented at ppq.ai/api-docs (machine pointer at ppq.ai/llms.txt). The open-source ppq-private-mode-proxy repo provides a local encryption proxy for TEE-backed “private mode” models; the core service itself is not open-source.
Gotchas
- It is a centralized custodial gateway to third-party providers — PPQ proxies your prompts upstream. Only the optional “private mode” (TEE + local encryption proxy) keeps content unreadable to PPQ.
- The no-account path stores balance and usage locally — losing local state or the payment credential can lose access.
- Funding by credit card introduces KYC; the Lightning/no-account path is the privacy-preserving one.