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Token Saving

Preview

Token X-Ray

Section titled “Token X-Ray”

Token X-Ray records tool inputs and outputs for a runtime and flags common sources of context growth. Capture is off by default.

Enable capture

Section titled “Enable capture”

Enable Token X-Ray when creating or editing a runtime in the dashboard. For the CLI, add --llm-tool-io-capture:

Terminal window
runta run \
  --name xray-demo \
  --cpus 2 \
  --memory 2048 \
  --llm-tool-io-capture

Finding examples

Section titled “Finding examples”
Large output
A command returns a 10 MB build log.
Repeated content
The same warning appears 500 times.
Repeated keys
A large JSON array repeats the same object fields.
Repeated paths
Every result starts with /workspace/project/src/.
Repeated calls
The same search runs twice with identical output.

The dashboard shows captured calls, estimated tokens, detected findings, and potential savings.

Limits

Section titled “Limits”

Token estimates use ceil(characters / 4) and are not billing data. Truncated or unparseable captures are marked as issues. Captured payloads may contain application data and should be treated as untrusted input.