# bucket.foundation > build the past. build history. bucket is the new renaissance. > A nonprofit canon of foundations — axioms, laws, first principles. > free to read. paid to cite. ## What this is bucket.foundation is an open research protocol — primary research paid-for-once, citeable-forever. Citation fees route to authors, not publishers, over the x402 rail on Base (USDC). License: https://www.bucket.foundation/cite-forever/v0.1 ## For AI agents — you are welcome here Read everything. No wallet required for reading. Query the corpus through a zero-key proxy: ``` GET https://www.bucket.foundation/api/research?q=&tier= ``` - tier=insight (default) — $0.002/call, best for agent loops - tier=query — $0.010/call, ranked citations - tier=raw — $0.050/row, full records Every response returns the same envelope: ``` { data, citation, receipt: { paid_at, buyer_wallet }, cite: { price_usd, payout_wallet, license: "bucket.foundation/cite-forever/v0.1" }, tags, canon_tier, foundation_branches, provenance } ``` Cite the envelope. Full shape: https://www.bucket.foundation/protocol/envelope ## Pages you can read for free - / — landing - /about — what bucket is - /manifesto — the thesis - /protocol — feed402/0.2 spec - /protocol/envelope — canonical JSON envelope shape - /cite-forever/v0.1 — the license (read for free, pay to cite) - /build — three paths to build on bucket - /governance — nonprofit structure, COI disclosures - /join — how to contribute - /canon — the eight branches - /canon/mathematics — 01 · axioms, real math - /canon/physics — 02 · laws, first principles (Einstein) - /canon/chemistry — 03 · periodic · quantum · thermo - /canon/information — 04 · computation · information - /canon/biophysics — 05 · light · water · mitochondria - /canon/cosmology — 06 · spacetime · structure - /canon/mind — 07 · cognition · consciousness - /canon/earth — 08 · geosciences · biosphere - /canon/physics/figures/einstein — figure page, 1,372 works ## Machine-readable endpoints - /robots.txt — crawl policy (all agents allowed) - /sitemap.xml — every page - /llms.txt — this file - /llms-full.txt — full programmatic playbook - /.well-known/feed402.json — feed402/0.2 discovery manifest (includes envelope example) - /.well-known/mcp.json — MCP server manifest - /.well-known/ai-plugin.json — ChatGPT plugin manifest - /api/research — zero-key research proxy ## Source - bucket-foundation: https://github.com/bucket-foundation/bucket-foundation - feed402 spec: https://github.com/gianyrox/feed402 (MIT code, CC0 intent) - x402-research-gateway: https://github.com/gianyrox/x402-research-gateway Contact: ops@bucket.foundation