feat: add x402 and payai skills (Solana + EVM agent payments) - #48
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notorious-d-e-v wants to merge 2 commits into
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feat: add x402 and payai skills (Solana + EVM agent payments)#48notorious-d-e-v wants to merge 2 commits into
notorious-d-e-v wants to merge 2 commits into
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Adds two complementary skills that let an OpenClaw agent pay for and sell services over the x402 protocol, with first-class Solana support. - skills/x402: the client skill — detect an HTTP 402, build/sign a USDC payment on Solana (facilitator pays gas) or EVM (EIP-3009), and retry with X-PAYMENT. Includes a zero-dep inspect-402.mjs helper. - skills/payai: the network skill — browse the PayAI Bazaar (/discovery/resources), use the multi-chain facilitator (/supported, /verify, /settle), and monetize your own endpoints. Includes a zero-dep discover.mjs helper. Both helpers are verified against the live PayAI facilitator. Complements the existing sp3nd skill, which already settles via the PayAI facilitator on Solana.
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The prior version documented only the v1 wire format (X-PAYMENT / X-PAYMENT-RESPONSE). x402 v2 changes the headers, network format, packages, and payload envelope. Both skills now cover v1 and v2: - Add a v1-vs-v2 table: PAYMENT-REQUIRED / PAYMENT-SIGNATURE / PAYMENT-RESPONSE headers, CAIP-2 networks (eip155:*, solana:<genesis>), @x402/* packages. - Client (Option A): show the v2 builder pattern (x402Client + register ExactEvmScheme/ExactSvmScheme via @x402/fetch); keep v1 as legacy. Correct a bug: the payer does not pass a facilitator URL — the seller settles. - Manual flow: scope it explicitly to the v1 format (still accepted by the facilitator) and add a note that v2 Solana needs the resource/accepted/payload envelope + a Memo instruction (nonce/replay protection) — use @x402/svm. - payai: mark discovery items' per-item x402Version; v2 seller middleware (@x402/express) + the @x402/extensions/bazaar declareDiscoveryExtension() requirement for Bazaar discoverability. Grounded in x402-foundation/x402 docs (migration-v1-to-v2, http-402, scheme_exact_svm) and the live PayAI facilitator (both v1 and v2 supported).
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Summary
Adds two complementary skills that let an OpenClaw agent pay for and sell services over the x402 protocol, with first-class Solana support alongside EVM. This fills a gap in the collection: today
sp3ndsettles x402 payments through the PayAI facilitator on Solana, but there's no general skill for paying any 402-gated resource or for discovering paid agent services.skills/x402HTTP 402, build + sign a USDC payment on Solana (facilitator pays gas) or EVM (EIP-3009), retry withX-PAYMENT. Chain-agnostic, no SDK required.skills/payai/discovery/resources), use the multi-chain facilitator (/supported,/verify,/settle), and monetize your own endpoints as x402 resources.Each skill ships
SKILL.md+README.md+_meta.json+ a zero-dependency helper script (Node 18+).Verified against live infrastructure
Both helper scripts were run against the live PayAI facilitator before submitting:
payai/scripts/discover.mjs— lists live Bazaar resources, filters by network (--network solana) and keyword, renders human-readable USDC amounts.x402/scripts/inspect-402.mjs— safely decodes the payment requirements of a real402response (network, asset, amount,payTo, Solana fee payer) without spending.The supported-networks table and code examples are grounded in
GET https://facilitator.payai.network/supported(Solana mainnet/devnet + 9 EVM chains).Checklist
SKILL.mdwithname+descriptionfrontmatter (openclawmetadataincluded, matching theacpskill)sp3ndskillskills/x402/andskills/payai/— the auto-generatedskill_index.md/README.mdtables are left for the weekly toolingNotes for reviewers
x402-fetch/x402-axiosclient libs andx402-express/-hono/-nextserver middlewares as the recommended path, and document the raw HTTP flow as a no-SDK fallback (guaranteed correct against the facilitator API)._meta.jsonis set toPayAINetwork.🤖 Generated with Claude Code