improve llm orchestration

[gabririgo]

• refactor schema
• auth improvements

[Copilot]

Pull request overview

This PR updates the LLM/tool orchestration flow and request gating to better separate “reasoning” vs “tool execution”, while also expanding agent-discovery endpoints and aligning SDK/types for new routing modes.

Changes:

• Add DeepSeek→Llama dual-model routing (plus new llama_only mode), improved streaming behavior, and stricter browser vs agent tool gating.
• Improve swap quoting/building robustness (0x taker fallback, gas-estimation fallbacks, NAV precheck warning behavior).
• Add agent discovery endpoints/headers + new skill doc, and update x402 route metadata.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
src/types.ts	Adds ASSETS binding and isBrowserRequest; extends routingMode union.
src/services/zeroXTrading.ts	Avoids invalid 0x taker (zero-address) for quote-only flows.
src/routes/chat.ts	Passes isBrowserRequest into request context; adjusts SSE event emission.
src/middleware/x402.ts	Updates protected route metadata; adds extra diagnostic logging on payments.
src/llm/client.ts	Implements DeepSeek-first reasoning + Llama tool execution; adds vault-tx gating; defaults swaps to 0x; improves error extraction.
src/index.ts	Adds /api discovery 402 response and homepage Link headers; adds well-known discovery endpoints.
sdk/src/types.ts	Extends SDK routingMode types to include llama_only.
scripts/trigger-bazaar.ts	Updates bazaar trigger timings and tool arguments format.
public/rigoblock-skill/SKILL.md	Adds a comprehensive external-agent skill doc.
public/openapi.json	Updates OpenAPI descriptions/paths (but currently contains corrupted/placeholder content).
public/index.html	UI streaming fixes + per-address auth caching + WebMCP tool registration.
public/_headers	Adds Link header for discovery on /.

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Copilot reviewed 16 out of 16 changed files in this pull request and generated 6 comments.

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Copilot reviewed 16 out of 16 changed files in this pull request and generated 11 comments.

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Copilot reviewed 17 out of 17 changed files in this pull request and generated 2 comments.

Comments suppressed due to low confidence (1)

src/middleware/x402.ts:266

• The payment-exemption logic grants free access based solely on Origin/Referer. Any non-browser client can forge these headers and bypass x402 payment for protected routes. If the intent is to exempt only your own frontend, consider requiring an additional server-issued proof (e.g. an HttpOnly cookie / signed token set by the Worker) or removing the exemption for non-authenticated requests in production.

  // Exempt own-frontend requests from payment
  server.onProtectedRequest(async (ctx) => {
    const adapter = ctx.adapter;

    const origin = adapter.getHeader("origin");
    if (origin && EXEMPT_ORIGINS.has(origin)) {
      return { grantAccess: true };
    }

    const referer = adapter.getHeader("referer");
    if (referer) {
      for (const o of EXEMPT_ORIGINS) {
        if (referer.startsWith(o)) {
          return { grantAccess: true };

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Copilot reviewed 18 out of 18 changed files in this pull request and generated 8 comments.

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Copilot reviewed 20 out of 21 changed files in this pull request and generated 4 comments.

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Copilot reviewed 21 out of 22 changed files in this pull request and generated 4 comments.

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