Claim record · Tool schema signature monitoring and drift handling
The 2026-07-28 revision gives 2 valid forms for a tool with no parameters and recommends the form that sets additionalProperties to false because it explicitly accepts only empty objects.
fact · verified 2026-09-05
- Vendor
- Model Context Protocol project
- Product
- Model Context Protocol
- Subsystem
- protocol
- Deployment
- not restricted
- Region
- not restricted
- Release range
- specification revision 2026-07-28
- Status
- fact
- Confidence
- 0.90
- Verified
- 2026-09-05
Sources
- Model Context Protocol specification 2026-07-28, Server Features: Tools — Model Context Protocol project · tier 1 standards and regulators · Tools > tool definition fields
Cite this claim
APA
WarmTransfer. (2026, September 5). Tool schema signature monitoring and drift handling: claim sigdrift-spec-empty-params-forms. WarmTransfer. https://warmtransfer.net/knowledge/claims/sigdrift-spec-empty-params-forms
BibTeX
@misc{warmtransfer-claim-sigdrift-spec-empty-params-forms,
title = {Tool schema signature monitoring and drift handling: claim sigdrift-spec-empty-params-forms},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sigdrift-spec-empty-params-forms},
note = {Claim sigdrift-spec-empty-params-forms, verified 2026-09-05}
}