Penny Press

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "penny-press": {
      "type": "http",
      "url": "https://www.pennypress.org/mcp"
    }
  }
}

7 tools

• list_essays

  List all published essays and fragments: titles, descriptions, prices, and reading URLs. Full text is free for humans at /read/{slug}; machine reads at /essays/{slug} are paid via x402 (USDC on Base).

• essay_payment_info

  Get the x402 payment details for one essay (price, network, asset, recipient wallet) so a machine buyer knows how to pay.

• lexicon_lookup

  Look up a term in the Penny Press Lexicon (the author's own definitions of his political-economy vocabulary). Returns free metadata — part of speech and the essays where the term appears — plus payment info for the $0.01 full definition.

• lexicon_snapshot_info

  Payment details for the Penny Press Lexicon full dataset snapshot ($0.25): every author-defined term with part of speech, definition, verbatim usage example, and source essays, as versioned JSON.

• common_cents_info

  Overview of Common Cents, the Penny Press collection of 20 author-curated quotations in five themed clusters: the themes, quote count, and payment info for the $0.01 full machine-readable set.

• witness_verify

  Check whether a SHA-256 content hash has been witnessed by LitWit, the Penny Press literary notary. Free. Returns the matching attestation entries (entry id, sequence, timestamp, title) or an empty result.

• witness_attest_info

  How to attest a work's fingerprint with LitWit ($0.05): what to submit, what the tamper-evident receipt contains, and the x402 payment details. The service never sees your work — only its hash.

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