Penny Press
Penny Press: short essays and fragments. Free for humans; machines pay pennies per read via x402 micropayments on Base. Essays are tiered: fragments $0.01, ensembles $0.02, prose $0.05. The catalog is growing, so the endpoint count is a snapshot. The verified route is GET /essays/big-stakes at $0.01. The glossary full set at $0.25 and the essays bundle at about $0.23 are advertised and not settlement-verified.
2 of 8 routes settlement-verified · $0.01–$0.05 USDC/request · 8 endpoints · Data · base network · x402 protocol
Verified routes
GET /essays/big-stakes· $0.01 to $0.05 · Verified with a $0.01 test payment on 28 Sep 2026 · receiptGET /essays/the-last-witness· $0.01 to $0.05 · Verified with a $0.05 test payment on 11 Oct 2026 · receipt
Other routes are unverified.
Networks: Base (settlement-verified)
Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.
url https://payapi.market/mcpListing facts
- Provider
- Penny Press
- Hosted at
www.pennypress.org- Category
- Data
- Price
- $0.01 to $0.05 USDC per request
- Endpoints
- 8
- Payment networks
- Base
- Settlement-verified
- 2 routes, last checked 2026-10-11
- Listed on PayAPI Market
- 2026-09-28
Try Penny Press
Call a verified route without paying first. The server should answer HTTP 402 Payment Required with the price, the USDC asset, the network and the wallet to pay. An x402 client pays that amount on Base and retries with the payment header.
curl -i "https://www.pennypress.org/essays/big-stakes"
curl -i "https://www.pennypress.org/essays/the-last-witness"About this API
Penny Press is listed in the Data category with pricing at $0.01–$0.05 USDC/request. 2 routes have been settlement-verified by PayAPI Market. View receipt on Basescan.
Payments settle on base in USDC via the x402 protocol. AI agents discover this API through the PayAPI Market MCP server and pay per request without API keys or accounts.
This API exposes 8 endpoints. Only the verified routes have been tested by PayAPI Market. Other routes are unverified.
Add this badge to your README
Paste this on your site. The link points at this listing. Listing is free and providers keep 100%.
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<a href="https://payapi.market/api/penny-press"><img src="https://payapi.market/badge/penny-press.svg" alt="Settlement-verified on PayAPI Market" height="20"></a>
Questions about this API
What does Penny Press do?
Penny Press: short essays and fragments. Free for humans; machines pay pennies per read via x402 micropayments on Base. Essays are tiered: fragments $0.01, ensembles $0.02, prose $0.05. The catalog is growing, so the endpoint count is a snapshot. The verified route is GET /essays/big-stakes at $0.01. The glossary full set at $0.25 and the essays bundle at about $0.23 are advertised and not settlement-verified. It is provided by Penny Press.
How much does Penny Press cost?
Penny Press is priced at $0.01 to $0.05 USDC per request, paid per call with no subscription. Verified with a $0.01 test payment on 28 Sep 2026. The exact amount for each call is in the HTTP 402 response before any money moves.
Do I need an API key or account to use Penny Press?
No. Penny Press uses the x402 protocol, so an agent pays per request in USDC on Base and gets the response, with no API key, account or signup.
Has Penny Press been verified?
Yes, 2 routes of its 8 endpoints. PayAPI Market paid for a real call from its own wallet, received real data back and recorded the USDC settlement on-chain, most recently on 2026-10-11. Routes that were not paid for are unverified.
How does an AI agent find Penny Press?
Through the free PayAPI Market MCP server at https://payapi.market/mcp, using search_apis or get_api, or over plain HTTP at https://payapi.market/agent/search. Discovery is free; the agent pays the provider directly on the listing's own 402.
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