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type: conceptconfidence: mediumupdated: 2026-08-10sources: 1

Definition

The MPP ecosystem is the broader set of third-party and official software — SDKs, payment-method plugins, framework integrations, infrastructure, CLIs, middleware, and live services — built around the Machine Payments Protocol, beyond the core spec repository (mpp-specs) and the official Rust SDK (mpp-rs). It is characterized here through awesome-mpp (github.com/mbeato/awesome-mpp), a community-maintained "awesome list" that self-describes as "the MPP registry — 100+ Machine Payments Protocol tools, SDKs, services, and payment methods across 15+ chains," billing itself as "the definitive directory for Stripe + Tempo agent payments." It is explicitly a community registry (maintained by a third party, mbeato, not by Tempo or Stripe directly), separate from the official mpp repository that hosts mpp.dev's own documentation and service directory.

How It Works

awesome-mpp organizes the ecosystem into ten top-level categories: Protocol and Specs, SDKs, Payment Methods, Framework Integrations, Infrastructure and Proxies, Agent Tools and CLIs, Middleware and Extensions, Services, Community Projects, and Tempo Blockchain, plus a closing Resources section. Community Projects is itself subdivided into Agent Frameworks, MCP Bridges, Applications, and Demos and Examples. Contributions are accepted via a CONTRIBUTING.md process, consistent with the standard "awesome list" convention (curated, PR-driven, community-submitted).

Category landscape (not exhaustive — see the raw README for the full entry list)

  • Protocol and Specs: points back to mpp-specs (the official RFC-style spec repo), mpp (the protocol docs site and service registry), and the IETF Internet-Draft (draft-ryan-httpauth-payment, co-authored by Brendan Ryan at Tempo and Jeff Weinstein at Stripe).
  • SDKs: split into Official (mppx for TypeScript with Hono/Express/Next.js middleware and reverse-proxy support, pympp for Python, mpp-rs for Rust, tempo-go/tempo-ts for Tempo-specific tooling) and Community (a Ruby port, a community Go SDK, a FastAPI middleware, an Elixir implementation, a .NET SDK, and a Dart SDK) — i.e. the official language coverage (TS/Python/Rust/Go/Ruby, matching the mpp-specs README's SDK list) is supplemented by community reimplementations in additional ecosystems (.NET, Elixir, Dart).
  • Payment Methods: confirms the protocol's payment-method-agnostic design in practice — plugins exist for Solana (six separate listed projects, including an official Solana Foundation SDK), Lightning (three listed projects, including Spark- and LND/NWC-based ones), and a long tail of "Other Chains" covering Sui, Stellar, XRP Ledger, Abstract, Movement, TON, Algorand, Avalanche, MultiversX, MegaETH, SKALE, Zcash, Monad, Canton, and cross-chain routers (e.g. via Squid Router) — this is the concrete evidence behind the "15+ chains" claim in the README's own footnote/tagline.
  • Framework Integrations: built-in middleware for Hono, Express, Next.js, Elysia, Bun.serve, and Deno.serve ships inside mppx itself; community integrations extend this to e.g. Next.js App Router combined auth (MPP + x402 + API-key) and AWS infrastructure glue.
  • Infrastructure and Proxies: standalone reverse proxies (mppx-proxy), a Cloudflare Workers proxy maintained by the Tempo team itself (mpp-proxy-cf), a transaction explorer/service-discovery site (mppscan.com), and paid-infrastructure examples like an MPP-powered VPS host and a GitHub REST API proxy gated by MPP payments.
  • Agent Tools and CLIs: CLI wallets and frameworks for agents/humans (incur/incur-rs), an official Tempo "agent skill pack," debugging tools (MPP-Inspector), and a cluster of dual-protocol tools that bridge MPP with the competing/complementary x402 protocol (e.g. x402-proxy, 402Router, APIbase) — signaling that in practice, agent-payment tooling in this ecosystem often supports MPP and x402 side by side rather than exclusively one or the other.
  • Middleware and Extensions: rate limiting, token-gating, tax computation, trust/reputation layers, KYC-style "Know Your Agent" screening, spend-verification/budget-cap tooling, and — again — a large cluster of x402-adjacent projects (Coinbase's own x402 repo is listed here as a related/complementary protocol implementation, not an MPP component).
  • Services: split into First-Party (services with built-in MPP support, e.g. pay-per-call API bundles, pay-per-request image generation, voice/video AI, browser automation, C2PA content-provenance verification, code execution sandboxes, GPU compute) and Proxied via Tempo (third-party APIs made payable through Tempo's mpp.tempo.xyz proxy without native MPP support — spanning AI/ML providers like Anthropic, OpenAI, Google Gemini, and Mistral; data/search providers like Exa, Firecrawl, and Brave Search; developer tools like Deepgram and Mapbox; and business, travel/weather, and generic "Abstract APIs" categories).
  • Community Projects: the largest and most heterogeneous category — agent frameworks and agent-to-agent marketplaces, MCP bridges that turn MCP server tools into paid endpoints (e.g. mpp-mcp, mpp-bundler as a Claude Code plugin for scaffolding MPP billing, 402index-mcp-server for discovery across "15,000+ paid API endpoints"), and a long tail of applications and hackathon demos (DoorDash/Shopify ordering agents, NBA micro-betting, voice-as-a-service, agent-to-agent settlement engines and even Solidity contracts for it).
  • Tempo Blockchain: the underlying chain infrastructure that Tempo-flavored MPP methods settle on — the chain itself, a frontend apps monorepo, a Foundry fork, Solidity standard libraries, and a Ledger hardware-wallet plugin.
  • Resources: documentation (mpp.dev, docs.tempo.xyz) and articles (Stripe's own MPP announcement blog post, Tempo's mainnet-launch post introducing MPP, and Stripe's broader "Agentic Commerce Solutions" post) situating MPP within Stripe's and Tempo's larger agentic-commerce strategy.

Key Parameters

  • Scale claim: "100+" tools/SDKs/services and "15+ chains," per the README's title tagline and its own self-listing entry.
  • Launch context (README footnote): MPP is described as launched March 2026, an open HTTP payment standard created by Stripe and Tempo Labs, using HTTP 402 with an extensible challenge-credential-receipt flow; payment-method agnostic (stablecoins, credit cards, Lightning, 15+ chains); supports one-time charges, pre-authorized-spending sessions, and streaming.
  • Official vs. community distinction: the SDKs and Payment Methods sections both explicitly separate "Official" (Tempo/Stripe/partner-maintained, e.g. Solana Foundation's own SDK) from "Community" (independently authored, third-party) entries — a useful signal for trust/maintenance-risk when picking a dependency from the list.
  • Cross-protocol overlap: a large fraction of "Middleware and Extensions" and "Agent Tools and CLIs" entries are dual- or multi-protocol (MPP + x402, or MPP + x402 + L402 + other agent-payment schemes like Google AP2, Visa TAP, Mastercard Agent Pay), reflecting that x402 (Coinbase's competing/adjacent HTTP-402 payment protocol) is the most commonly paired protocol in this ecosystem, not a one-off.

When To Use

  • Consult awesome-mpp when looking for a payment-method plugin for a chain not covered by the official mpp-rs/mppx SDKs (e.g. Solana, Stellar, Lightning, or one of the long-tail chains) rather than building one from scratch.
  • Consult it when choosing infrastructure to gate an existing API/service with MPP (proxies, framework middleware) without writing custom 402-handling code.
  • Consult it for prior art before building new agent-payment tooling (CLIs, MCP bridges, trust/reputation layers) — the "Community Projects" and "MCP Bridges" subsections in particular show many teams have already built overlapping pieces.
  • Treat entries as a discovery starting point, not a certification — see Risks & Pitfalls below.

Risks & Pitfalls

  • This is a community-maintained registry, not an official Tempo/Stripe directory — inclusion in awesome-mpp does not imply endorsement, security review, or maintenance guarantees by the protocol's authors. The official service directory lives in the separate mpp repository / mpp.dev, referenced but not duplicated here.
  • Confidence for this material is medium: it is grounded in a single source (the awesome-mpp README itself), which is inherently a self-reported, PR-driven listing — entry descriptions are one-line self-summaries from each linked project, not independently verified by this wiki.
  • Many "Community" and third-party entries are hackathon-scale or early-stage projects (the README's own Demos/Examples and hackathon-tagged entries make this explicit); do not treat listing density in a category as a signal of production readiness.
  • The ecosystem heavily overlaps with the separate x402 protocol (Coinbase-originated) — several tools listed under MPP categories are actually dual-protocol or x402-primary with MPP as a secondary integration. When evaluating a tool from this list, check which protocol(s) it actually implements natively versus which it merely proxies or bridges to.
  • "Proxied via Tempo" services (e.g. Anthropic, OpenAI, Exa) are not native MPP integrations — they are made payable through Tempo's own mpp.tempo.xyz proxy layer, which is a distinct trust and reliability boundary from a service that implements the Payment scheme itself per payment http auth scheme.

Related Concepts

  • mpp overview — the protocol this ecosystem builds on top of, including the official SDK list this registry supplements
  • using mpp — the official Rust SDK (mpp-rs) covered in depth elsewhere; this page covers everything around it in other languages and layers
  • payment discovery — the protocol-level discovery mechanism that registry/catalog tools like mppscan.com and the catalog-client pattern build on
  • extending mpp — how a new entry in this ecosystem (e.g. a new chain's payment-method plugin) would formally register itself as a spec

Sources

  • raw/github_doc-readme-md-3.md (mbeato/awesome-mpp README: full category listing, SDK official/community split, payment-method chain coverage, services split, footnote description of MPP's launch and design)