Reference

MCP tool reference

Every registered tool with its required scope, credit cost, and read/write classification — generated from source.

Last updated 2026-07-27

The complete tool registry behind MCP, REST, and the SDK — generated from source so scopes and costs stay exact. Reads cost zero credits; writes are classified and may require confirmation for OAuth agents (see reads vs. writes).

Operator metering narrative: Billing & credits. Wire-up: MCP guide · Quickstart.

Tools

Reads (free)

Writes

context

Tool	Scope	Cost	Description
`context.brief` readSDK	context:read	FREE	Preferred entry point for external agents. Returns a warm, visibility-scoped and source-cited company capsule. Use lens=handoff for a continuity brief covering responsibilities, commitments, positioning, relationships, and unresolved decisions. Free (0 WU).
`context.remember` writeSDK	context:write	FREE	Preserve one durable fact, constraint, commitment, correction, session outcome, or explicit open question so future agents start with the same company context. Use kind:"question" only when authoring an open question — never inferred from prose. Requires a caller-stable idempotency_key and returns a truthful write receipt.
`context.resolve` writeSDK	context:write	FREE	Answer a material open_questions[] item from context.brief or context.search. Routes through Track D materialization (correct / observe / resolvePendingJudgment) so the answer changes corpus state. Requires a caller-stable idempotency_key and returns a truthful write receipt.
`context.search` readSDK	context:read	FREE	Search workspace context for source-backed snippets on a topic, or hydrate exact references returned by context.brief. Returns extractive evidence with resolvable source metadata; it does not generate an answer. Free (0 WU).
`context.source.ingest` writeSDK	context:write	FREE	Submit exact original source bytes with caller-stable identity, provider ordering, attribution, and access metadata. Generated summaries are not evidence. Returns a durable receipt and makes stale versions visible without rewriting source history.
`context.sync` readSDK	context:read	FREE	Return visibility-scoped knowledge, decision, and work references changed since an opaque durable cursor, then issue the next cursor for another agent or session. Free (0 WU).

decision

Tool	Scope	Cost	Description
`decision.record` writeSDK	decision:write	FREE	Record an immutable decision with its context, judgment, rationale, evidence, and optional superseded decision so every future agent can retrieve the current precedent. Visibility defaults to private in a personal workspace and company-wide in a company workspace. Requires a caller-stable idempotency_key and returns a truthful write receipt.
`decision.search` readSDK	decision:read	FREE	Find previous decisions or hydrate known decisions before making a new call. Returns current, visibility-scoped precedent with source references, never invented synthesis. Free (0 WU).

engineering

Tool	Scope	Cost	Description
`engineering.brief` readSDK	engineering:read	FREE	Return the deterministic six-dimension Engineering brief with explicit evidence gaps and at most three prioritized actions.
`engineering.incident.get` readSDK	engineering:read	FREE	Return one Engineering incident with its real event ledger and immutable verification receipts.
`engineering.incidents.list` readSDK	engineering:read	FREE	List company-scoped Engineering incidents with honest resolution disposition and verification receipt linkage.

receipt

Tool	Scope	Cost	Description
`receipt.get` readSDK	context:read	FREE	Read the truthful accepted, processing, applied, failed, rejected, or expired state of a context or decision write and its safe resulting entity reference. Free (0 WU).