Add TOON adapter for token-efficient model context injection (RFC 0050)#53
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supernovae merged 2 commits intomainfrom Apr 18, 2026
Merged
Add TOON adapter for token-efficient model context injection (RFC 0050)#53supernovae merged 2 commits intomainfrom
supernovae merged 2 commits intomainfrom
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TOON (Token-Oriented Object Notation) is an opt-in wire format that reduces token consumption by 20-40% compared to JSON for structured harness payloads. JSON Schema remains the normative interchange and audit format; TOON is strictly an adapter-layer optimization. - RFC 0050: specification, notation reference, research citations - harness/src/adapters/toon-adapter.ts: toToon, fromToon, schemaToToonHeader - manifestToToon and serializeManifest dispatcher in manifest-builder - wireFormat config option on governed-agent and chat-agent - 25 new tests (114 total, zero regressions) - Experiment card, example fixtures, bibliography and docs updates Made-with: Cursor
Dependency Review✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.Scanned FilesNone |
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- Replace polynomial regex in scalarArrMatch (remove \s* before .+ capture group, trim after match instead) - Replace polynomial regex in isObjectKeyLine (use indexOf + bounded character class instead of unbounded .* with trailing \s*) - Fix strict TypeScript error in schemaToToonHeader by narrowing properties to a local variable after the guard check - Skip cross-schema example folders (toon/) in validate.py to avoid false-positive unknown-folder errors Made-with: Cursor
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Summary
harness/src/adapters/toon-adapter.ts) providestoToon,fromToon, andschemaToToonHeaderwith round-trip fidelity against Ajv validation.manifestToToonand aserializeManifestdispatcher alongside the existingmanifestToCompactText, selected via a newwireFormatconfig option on governed-agent and chat-agent.docs/bibliography.mdanddocs/related-work.md.docs/token-efficiency.mdwith Tier 2.5 section, experiment card atdocs/experiments/toon_format_efficiency.md, side-by-side JSON/TOON fixtures inexamples/toon/.Test plan
harness/tests/toon-adapter.test.tscovering serialization, parsing, round-trip, schema headers, manifest TOON output, and theserializeManifestdispatcherwireFormatdefaults to"compact-text"wireFormat: "toon"against a live backendMade with Cursor