Author an HSX program from a natural-language brief

composer.author

Streams an admitted Architect turn, thought summaries, proposals checked for errors and, for platform staff only, usage and cost. Each SSE data record is a typed event with turnId and sequence. A repeated turnId refuses a second generation. The draft changes only when the author applies a proposal. Callers: the founder's CLI login, or an agent token with blueprints:read, or a personal access token with blueprints:read.

POST /v1/composer/author

Principal user_session. Idempotency not_required. Environment either.

Input

Field	In	Type	Description
`X-Hyperscale-Environment`	header	`sandbox \| live`
`tenantId` required	body	`string`	Organization tenant ID
`turnId` required	body	`string`
`intent` required	body	`author \| explain \| guide`
`stage`	body	`parties \| accounts \| logic`	Cumulative authoring checkpoint: parties, accounts, then logic. Omit for a complete authoring turn.
`requirements`	body	`object`	Carry the accepted quoted requirements across checkpoints.
`restartFrom`	body	`parties \| accounts \| logic`	Correct this checkpoint and invalidate it and its descendants. Supply revised requirements for a changed brief.
`effort`	body	`low \| medium \| high`	How long the Architect thinks before answering; omit for low
`baseSourceDigest`	body	`string`	SHA-256 hex of source as sent, empty text when source is omitted. Omit it and the server takes the digest of the source in this request
`history`	body	`object[]`
`catalogRevisionId`	body	`string`	Immutable tenant catalog revision used when verifying the authored HSX source
`productId`	body	`string`	Product to author against; omit for a fresh composition
`brief` required	body	`string`	Natural-language brief describing the intended program
`source`	body	`string`	Current draft HSX source to revise
`diagnostics`	body	`string`	Compiler output from previous attempt to repair
`screen`	body	`object`	The portal screen the question comes from: its route, title and a summary of what it shows

Request sample

curl --request POST 'https://hyperscale0.ai/v1/composer/author' \
  --header "Authorization: Bearer $HYPERSCALE_API_KEY" \
  --header 'X-Hyperscale-Environment: sandbox' \
  --header 'Content-Type: application/json' \
  --data-raw '{"tenantId":"ten_sandbox_example0001","turnId":"resource_sandbox_example0001","intent":"author","brief":"x"}'

Errors

Code	HTTP	Cause
`agent_approval_denied`	403	A human denied the agent's proposed operation.
`agent_approval_required`	202	An agent proposed a protected live operation.
`csrf_token_invalid`	403	A browser session mutation did not carry a current Hyperscale CSRF token.
`environment_mismatch`	403	The session was issued for sandbox or live and the request targets the other environment.
`internal_error`	500	Hyperscale hit an unexpected server-side condition and hid internal implementation details from this audience.
`invalid_request`	400	The request does not match the API reference.
`missing_required_permission`	403	The signed-in member's current role does not grant the permission required for this operation.
`missing_required_scope`	403	The credential is valid but does not grant one or more operation scopes.
`not_found`	404	No Hyperscale route matched the requested path and method.
`product_access_suspended`	403	The Product is disabled or closed, so its credentials are suspended in every environment.
`product_activation_required`	403	The live Product or required live capability is not active yet.
`rate_limited`	429	The credential sent more than its limit in the current 60-second window: 600 requests per API key or session, 1,200 per IP address. Every response carries `x-ratelimit-limit`, `x-ratelimit-remaining` and `x-ratelimit-reset` (Unix seconds).
`request_body_too_large`	413	The JSON request body exceeded Hyperscale's accepted payload size.
`resource_not_found`	404	The requested resource does not exist in the credential's visible scope.
`state_conflict`	409	The operation conflicts with the current durable state of the resource.
`state_constraint_failed`	422	The request is syntactically valid but violates a business-state constraint.
`tenant_mismatch`	403	The request mixed tenant-owned identifiers across tenant boundaries.
`tenant_not_found`	404	The credential resolved to a tenant Hyperscale cannot find.
`unauthorized`	403	The request did not include a valid Hyperscale bearer credential for this environment.
`agent_token_expired`	401	The agent token is real, but its grant ended. A grant lasts 30 days, or 7 days unused. `details.expiresAt` holds the date in ISO 8601 and `details.agentName` names the agent.
`agent_token_replaced`	401	The founder ran `hyperscale agent setup` again for this agent, which replaced this token with a newer one. `details.agentName` names the agent and `details.replacedAt` holds the date.
`device_login_expired`	401	The bearer is the founder's own device login from `hyperscale auth login`, not an agent token. Its access token lasts an hour and the CLI refreshes it; the login itself ends after 30 days, or 7 days unused. `details.expiresAt` holds when it ended in ISO 8601.
`invalid_credentials`	401	Hyperscale could not accept the account or credential request. Signup, login, and bearer authentication use one 401 for every case they reject, so the response exposes no credential-specific reason or registered-email verdict. The single exception is a key that is real but homed in the other environment: because the presented secret already matched a stored key, the message names the mismatch instead of leaving a working credential looking unknown. A bearer that matched nothing gets text that fits its prefix (an agent token, a refresh token, a personal access token, a session or no Hyperscale token at all), which says only what the caller sent, never whether a credential like it exists.
`session_expired`	401	The session behind this request has ended. A console session ends 30 days after sign-in, or after 12 hours with no request. An admin or customer session ends 24 hours after sign-in, or after 15 minutes with no request. A personal access token ends at the `expiresAt` set when it was created.
`session_required`	401	This operation needs a person signed in through the browser or the `hyperscale` CLI. A Product API key cannot call it. The request carried no session, or its token matched no live session.
`session_revoked`	401	The session or personal access token behind this request was ended before its expiry. Sign-out, `user.session.revoke`, a password reset, a role change, removal from the team, user suspension and `personal_access_token.revoke` all end sessions.
`tenant_status_forbidden`	409	The company is suspended or closed, so every credential bound to it is refused, reads included. `details.tenantId` names the company.

All operations