tools: add searchable EVM error catalog for agents

[mrtdlgc]

Summary

• Add revert.wtf to tools/SKILL.md as a searchable EVM/RPC/wallet/ERC-4337/x402 error catalog for agents
• Document hosted API, read-only MCP, and client SDK entry points
• Keep SKILL.md, README.md, openclaw-skill/SKILL.md, and the homepage Tools card in sync

Baseline

Tested with Opus 4.8 high and GPT-5.5 Pro on a realistic Ethereum debugging prompt covering:

• Panic(uint256) code 0x11
• AA23 reverted or OOG
• HTTP 402 / insufficient_funds on eip155:8453
• selector 0x08c379a0

Both models correctly decoded the common cases. So this PR does not try to teach basic revert decoding.

The gap: both models defaulted to hand-rolled app-side decoder tables and troubleshooting prose. Neither mentioned an existing searchable catalog, hosted HTTP API, MCP server, or client SDK.

Triage

• 🟢 Common decode facts (Panic(0x11), AA23, Error(string), Base chain id): cut
• 🔴 Current searchable catalog/API/MCP/client path: keep
• 🔴 “Use the maintained catalog before hand-rolling decoder tables”: keep
• 🟡 Bounded search / focused lookup / avoid dumping a full catalog into context or browser bundles: compressed into one agent-pattern paragraph

Placement

This belongs in tools/SKILL.md, not a new skill, because the baseline shows the missing piece is tool discovery. The models already know the common decoding concepts; they skip the maintained tool path.

Verification

• POST https://revert.wtf/api/search returns bounded catalog results
• POST https://revert.wtf/api/explain returns normalized explanations with evidence and next steps
• POST /api/revert-decode, /api/aa-decode, and /api/selector return focused decoder results
• @revertwtf/mcp is published on npm
• git diff --check

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