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Found 83 Skills
List and test exposed PostgreSQL RPC functions for security issues and potential RLS bypass.
Build type-safe APIs with Hono for Cloudflare Workers, Deno, Bun, Node.js. Routing, middleware, validation (Zod/Valibot), RPC, streaming (SSE), WebSocket, security (CSRF, secureHeaders). Use when: building Hono APIs, streaming SSE, WebSocket, validation, RPC. Troubleshoot: validation hooks, RPC types, middleware chains, JWT verify algorithm required (v4.11.4+), body consumed errors.
Guide for oRPC — a type-safe RPC framework combining end-to-end type safety with OpenAPI compliance. Use when user explicitly mentions "oRPC" or asks to "create oRPC procedures", "set up oRPC server", "configure oRPC client", "add oRPC middleware", "define oRPC router", "use oRPC with Next.js/Express/Hono/Fastify", "generate OpenAPI spec with oRPC", "integrate oRPC with TanStack Query", "stream with oRPC", "handle errors in oRPC", "set up oRPC contract-first", "migrate from tRPC to oRPC", or asks about oRPC procedures, routers, middleware, context, plugins, adapters, or server actions. Covers server setup, client creation, middleware chains, error handling, OpenAPI generation, file uploads, event iterators (SSE/streaming), server actions, contract-first development, and framework adapter integrations. Do NOT use for generic RPC/gRPC questions, tRPC-only questions (without migration context), or general TypeScript API development without oRPC.
Hono RPC - end-to-end type-safe API client generation with hc client and TypeScript inference
Complete guide for @solana/kit - the modern, tree-shakeable, zero-dependency JavaScript SDK from Anza. Covers RPC connections, signers, transaction building with pipe, signing, sending, and account fetching with full TypeScript support.
Call Ethereum and EVM chains from IC canisters via the EVM RPC canister. Covers JSON-RPC calls, multi-provider consensus, ERC-20 reads, and sending pre-signed transactions. Use when calling Ethereum, Arbitrum, Base, Optimism, or any EVM chain from a canister. Do NOT use for generic HTTPS calls to non-EVM APIs — use https-outcalls instead.
Mantle Network hub: chain primer, registry checks, analytics, DeFi planning, contracts. Use when working on Mantle (e.g. verify an address, plan a DeFi route, debug a Mantle RPC error, design a contract for Mantle gas).
Expert blueprint for multiplayer networking (Among Us, Brawlhalla, Terraria) using Godot's high-level API covering RPCs, state synchronization, authoritative servers, client prediction, and lobby systems. Use when building online multiplayer, LAN co-op, or networked games. Keywords multiplayer, RPC, ENetMultiplayerPeer, MultiplayerSynchronizer, authority, client prediction, rollback.
Complete guide for ERPNext/Frappe API integrations (v14/v15/v16) including REST API, RPC API, authentication, webhooks, and rate limiting. Use when code is needed for external API calls to ERPNext, designing API endpoints, configuring webhooks, implementing authentication (token/OAuth2/session). Triggers: API integration, REST endpoint, webhook, token authentication, OAuth, frappe.call, external connection, API response, rate limiting.
oRPC (v1.12+) typesafe API layer for TypeScript. Covers contract-first development, procedure definition, middleware, routers, context, error handling, Hono integration, TanStack Query, event iterators, plugins, file uploads, WebSocket adapter, and best practices. Use when building or modifying API procedures, data fetching hooks, server handlers, or real-time features. Triggers on tasks involving oRPC, typesafe APIs, RPC procedures, or server route handlers.
Error-to-fix playbook for every known failure mode on the OpenFinance backend — Polymarket, Relay, Hyperliquid, Privy delegation, and Solana RPC issues. Use this the moment a call fails, returns an unexpected status, or behaves inconsistently with on-chain state. Triggers on ANY of these error signatures verbatim or in paraphrase. Polymarket: "allowance: 0 but on-chain shows max", "CLOB reports allowance 0", "approvals confirmed but order rejected", "404 upstream" on market orders, "tick size" rejection, "order size below minimum", USDC.e vs pUSD vs native USDC confusion, V1 vs V2 exchange confusion. Relay: "InstructionFallbackNotFound", "Custom:101", "Custom:6000", "AnchorError", "Blockhash not found", "TransactionExpired", "No valid authorization signatures were provided", "Solana wallet is not delegated to the app", 412 delegation errors, quote succeeded but execute failed, stuck funds on Solana, stuck funds cross-chain, topupGas forced off. Hyperliquid: "Insufficient perp account value", "price out of bounds", WebSocket stale data, spot vs perp balance confusion. General: any "why is X failing", "why does on-chain and API state disagree", "what does this error mean". Read this BEFORE assuming a bug in the MCP or backend — most of these errors are already catalogued with known fixes.
Selects how functions are invoked — synchronous calls that return results, fire-and-forget void dispatches, or durable enqueue through named queues with retries. Use when deciding between blocking RPC calls, background job dispatch, async workers, or reliable message delivery with acknowledgement.