0.5.5 — 2026-08-20

Release Notes

An agent turn's request dialect becomes a named, declared property of a
provider binding rather than something recovered by reading a base URL.
ModelWire — anthropic-messages, openai-responses, openai-chat-compat,
coerced-tools — is separate from CoerceProvider, which answers whose
credential pays; the two were one enum, and a metered gateway is a single
payer identity fronting three dialects.

The wire used to be recovered by testing an admitted base URL for an
/anthropic suffix, with everything else taking the chat-completions wire as
"the wire that has always worked". That default was wrong in production: an
OpenAI model whose family carries tools only on the Responses API was sent its
tools on chat completions and refused at the first turn that carried any,
while this runtime's Responses builder sat unreachable behind a mapping with
no arm that produced it. A binding may now declare its wire in the signed
policy, and the declaration travels through the turn admission to the host.
The surface mapping survives only as a fallback for envelopes signed before
the field existed: it is total, and an unrecognized surface is an error rather
than a guess.

coerced-tools is a new dialect and the floor beneath the model catalogue:
chat completions with response_format pinned to a {reply, tool_calls[]}
schema and no native tool array at all, so a model that can honour a JSON
schema can drive the loop whatever its endpoint implements. DR-0064 records
it and states its cost — a tool request expressed as structured output is off
the format models are trained on — so native calling remains the default and
this remains a fallback. Brokering is unchanged: whip still executes every
tool the model requests, under the same lease, store policy, counter, and
capability gate.

Compatible with envelopes signed before this release. The wire field is
optional and omitted when absent, so an existing policy canonicalizes to the
bytes it was signed as and still verifies.

Install whipplescript 0.5.5

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/GaugeWright/whipplescript/releases/download/v0.5.5/whipplescript-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/GaugeWright/whipplescript/releases/download/v0.5.5/whipplescript-installer.ps1 | iex"

Install prebuilt binaries via Homebrew

brew install GaugeWright/tap/whipplescript

Download whipplescript 0.5.5

File	Platform	Checksum
whipplescript-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
whipplescript-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
whipplescript-x86_64-pc-windows-msvc.zip	x64 Windows	checksum
whipplescript-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
whipplescript-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum