AgentKit erc20 action descriptions audit — inputs good, outputs/errors missing

Ran AgentKit's erc20 actions through Twig (https://twig.kind-ling.com/) — an automated MCP tool description scorer.

| Tool | Grade | Issue |
| ------------- | ----- | ------------------------------------------------------------------------------ |
| get_balance | B | Missing: error states (invalid address, unsupported network) |
| transfer | C+ | No gas context — agents don't know this requires native token balance |
| approve | C | Missing: why you'd approve before transfer, what failure looks like without it |
| get_allowance | C | No context on when this matters vs calling transfer directly |

Score: 61/100 (C). Pattern: inputs are well-documented, outputs and error states are not.

Re-run: https://twig.kind-ling.com/analyze — free, no auth required.