tool-call-contracts-py
Validate LLM tool-call payloads with small JSON-like contracts. Pure Python, zero deps. Python port of @mukundakatta/tool-call-contracts.
pip install tool-call-contracts-py
from tool_call_contracts import validate_tool_call, assert_tool_call, ContractError
contract = {
"name": "search",
"arguments": {
"query": {"type": "string", "required": True},
"limit": {"type": "int", "enum": [10, 25, 50]},
},
}
res = validate_tool_call({"name": "search", "arguments": {"query": "python"}}, contract)
# ValidationResult(valid=True, errors=[])
assert_tool_call({"name": "fetch", "arguments": {}}, contract)
# raises ContractError: expected tool search, got fetch; query is required
Supported rule fields per argument: type (string/int/float/bool/list/dict), required, enum, pattern (regex for strings).
License
MIT
1 maintainer
Metadata
1 maintainer
Release files for tool-call-contracts-py 0.1.0
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