Get artifact
Inspect immutable artifact metadata and current availability.
Credential scopes: artifacts:read
Resource authority: Artifact creator, or current administrator of a run that produced or accepted the exact artifact dependency. Unrelated standalone uploads remain private.
Retry: Repeat GET using the same resource identity; each request rechecks current credential and resource authority.
Guards: Knowing an artifact UUID grants no authority.
Retain: Artifact UUID and published version/size/SHA-256; never retain capability URLs.
Specific failures: 403 insufficient_scope; 404 not_found: missing or unauthorized artifact; 503 artifact_unavailable
Next action: Use content only when ready; keep immutable identities. Worked workflow
Authorizations
Section titled “Authorizations”Parameters
Section titled “Parameters”Path Parameters
Section titled “Path Parameters”Artifact identity readable by its creator or a current administrator of an accepting/producing run.
Responses
Section titled “Responses”Immutable metadata, current availability and optional verified content evidence. No storage keys or temporary URLs.
object
Metadata availability is separate from a producing run’s historical outcome. Ready means an exact version was verified and published. HTTP downloads and file-input authorization remain separate operations.
UTC with PostgreSQL microsecond precision.
Description supplied by trusted application code; ownership is never supplied. Scientific metadata uses the same bounded, exact JSON storage profile as inputs.
object
A bare type/subtype, without parameters or wildcards.
An object of scientific annotations, not executable schema/file instructions.
An opaque service-selected destination identity, not a storage URL.
Verified immutable evidence, retained even after availability is lost. Null means no verified version has been bound; it never implies readiness.
object
Full-object SHA-256, deliberately distinct from an ETag or multipart digest.
object
Headers
Section titled “Headers”No-store
Always present. A fresh server-generated UUID for this request; incoming IDs are ignored. On errors, this equals the response body’s request_id.
Query parameters are not accepted.
The common JSON body for errors returned by the HTTP application.
object
Stable machine-readable error code.
Bounded corrections for authorized scientific-schema failures only. Absent on other failures. The complete validation error body is <=4608 bytes.
object
More violations exist than fit in this response.
At most eight violations, in validator traversal order.
A schema failure without submitted values or arbitrary property names.
object
Fixed guidance; actual bounds and allowed values remain in the publication schema.
JSON Pointer relative to inputs; the empty string denotes its root.
Only ordinary, explicitly declared property names and array indices appear.
Example
/valueThe position stops at a safe ancestor instead of naming the exact field.
Stable categories independent of the validator’s free-form diagnostics.
Safe explanation without internal errors or submitted input values.
Matches the response’s x-request-id header.
Headers
Section titled “Headers”No-store
Always present. A fresh server-generated UUID for this request; incoming IDs are ignored. On errors, this equals the response body’s request_id.
Active user credential required.
The common JSON body for errors returned by the HTTP application.
object
Stable machine-readable error code.
Bounded corrections for authorized scientific-schema failures only. Absent on other failures. The complete validation error body is <=4608 bytes.
object
More violations exist than fit in this response.
At most eight violations, in validator traversal order.
A schema failure without submitted values or arbitrary property names.
object
Fixed guidance; actual bounds and allowed values remain in the publication schema.
JSON Pointer relative to inputs; the empty string denotes its root.
Only ordinary, explicitly declared property names and array indices appear.
Example
/valueThe position stops at a safe ancestor instead of naming the exact field.
Stable categories independent of the validator’s free-form diagnostics.
Safe explanation without internal errors or submitted input values.
Matches the response’s x-request-id header.
Headers
Section titled “Headers”No-store
Always present. A fresh server-generated UUID for this request; incoming IDs are ignored. On errors, this equals the response body’s request_id.
The credential does not permit this operation (insufficient_scope).
The common JSON body for errors returned by the HTTP application.
object
Stable machine-readable error code.
Bounded corrections for authorized scientific-schema failures only. Absent on other failures. The complete validation error body is <=4608 bytes.
object
More violations exist than fit in this response.
At most eight violations, in validator traversal order.
A schema failure without submitted values or arbitrary property names.
object
Fixed guidance; actual bounds and allowed values remain in the publication schema.
JSON Pointer relative to inputs; the empty string denotes its root.
Only ordinary, explicitly declared property names and array indices appear.
Example
/valueThe position stops at a safe ancestor instead of naming the exact field.
Stable categories independent of the validator’s free-form diagnostics.
Safe explanation without internal errors or submitted input values.
Matches the response’s x-request-id header.
Headers
Section titled “Headers”No-store
Always present. A fresh server-generated UUID for this request; incoming IDs are ignored. On errors, this equals the response body’s request_id.
Invalid, unknown or unauthorized artifact; unrelated standalone uploads remain private.
The common JSON body for errors returned by the HTTP application.
object
Stable machine-readable error code.
Bounded corrections for authorized scientific-schema failures only. Absent on other failures. The complete validation error body is <=4608 bytes.
object
More violations exist than fit in this response.
At most eight violations, in validator traversal order.
A schema failure without submitted values or arbitrary property names.
object
Fixed guidance; actual bounds and allowed values remain in the publication schema.
JSON Pointer relative to inputs; the empty string denotes its root.
Only ordinary, explicitly declared property names and array indices appear.
Example
/valueThe position stops at a safe ancestor instead of naming the exact field.
Stable categories independent of the validator’s free-form diagnostics.
Safe explanation without internal errors or submitted input values.
Matches the response’s x-request-id header.
Headers
Section titled “Headers”No-store
Always present. A fresh server-generated UUID for this request; incoming IDs are ignored. On errors, this equals the response body’s request_id.
413: the request body exceeds the configured size limit.
The common JSON body for errors returned by the HTTP application.
object
Stable machine-readable error code.
Bounded corrections for authorized scientific-schema failures only. Absent on other failures. The complete validation error body is <=4608 bytes.
object
More violations exist than fit in this response.
At most eight violations, in validator traversal order.
A schema failure without submitted values or arbitrary property names.
object
Fixed guidance; actual bounds and allowed values remain in the publication schema.
JSON Pointer relative to inputs; the empty string denotes its root.
Only ordinary, explicitly declared property names and array indices appear.
Example
/valueThe position stops at a safe ancestor instead of naming the exact field.
Stable categories independent of the validator’s free-form diagnostics.
Safe explanation without internal errors or submitted input values.
Matches the response’s x-request-id header.
Headers
Section titled “Headers”No-store
Always present. A fresh server-generated UUID for this request; incoming IDs are ignored. On errors, this equals the response body’s request_id.
Artifact records unavailable.
The common JSON body for errors returned by the HTTP application.
object
Stable machine-readable error code.
Bounded corrections for authorized scientific-schema failures only. Absent on other failures. The complete validation error body is <=4608 bytes.
object
More violations exist than fit in this response.
At most eight violations, in validator traversal order.
A schema failure without submitted values or arbitrary property names.
object
Fixed guidance; actual bounds and allowed values remain in the publication schema.
JSON Pointer relative to inputs; the empty string denotes its root.
Only ordinary, explicitly declared property names and array indices appear.
Example
/valueThe position stops at a safe ancestor instead of naming the exact field.
Stable categories independent of the validator’s free-form diagnostics.
Safe explanation without internal errors or submitted input values.
Matches the response’s x-request-id header.
Headers
Section titled “Headers”No-store
Always present. A fresh server-generated UUID for this request; incoming IDs are ignored. On errors, this equals the response body’s request_id.
default
Section titled “default”An HTTP request failed; inspect the stable error code and request ID.
The common JSON body for errors returned by the HTTP application.
object
Stable machine-readable error code.
Bounded corrections for authorized scientific-schema failures only. Absent on other failures. The complete validation error body is <=4608 bytes.
object
More violations exist than fit in this response.
At most eight violations, in validator traversal order.
A schema failure without submitted values or arbitrary property names.
object
Fixed guidance; actual bounds and allowed values remain in the publication schema.
JSON Pointer relative to inputs; the empty string denotes its root.
Only ordinary, explicitly declared property names and array indices appear.
Example
/valueThe position stops at a safe ancestor instead of naming the exact field.
Stable categories independent of the validator’s free-form diagnostics.
Safe explanation without internal errors or submitted input values.
Matches the response’s x-request-id header.
Headers
Section titled “Headers”No-store
Always present. A fresh server-generated UUID for this request; incoming IDs are ignored. On errors, this equals the response body’s request_id.
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