Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0
jadpo
ReferenceErrors

Errors

Command errors

These are the errors only a command raises, so jadpo check can't show them with a source example; the command line's own are under Command-line errors. Some rows belong to commands that other commands replace (schema, artifacts, watch).

Rule Raised by What it means
acceptance.base_missing check, build, acceptance new Base commit the change is compared with isn't in this clone
acceptance.edited check, build Acceptance already on the before side was edited
acceptance.invalid check, build Acceptance file isn't written as an acceptance
acceptance.missing check, build A change could break someone else or widen who can do what, and no acceptance this change adds says a person agreed to it
acceptance.no_reason check, build An acceptance this change adds has no /// line above acceptance saying why a person accepted the changes it lists
acceptance.unmatched check, build Acceptance lists a change this change doesn't make
conform.failed package conform A package's answers to jadpo package conform don't fit the capability it fills, or the suite couldn't run
conform.refused package conform The conformance suite wasn't sent to the provider's live API, because the app has no connection to the package, nothing sets the connection's credential or address, or ai: doesn't ask its models through it
protocol.mismatch package protocol A registry's OpenAPI document differs from the registry protocol
protocol.unreadable package protocol The document given to jadpo package protocol couldn't be read as OpenAPI's JSON
recording.failed package record, ai record A recording by jadpo package record or jadpo ai record got no answer worth keeping from the sandbox or the model, or its call couldn't be made
recording.refused package record, ai record A recording was refused before anything was sent, because its connection would call a live API or has nothing set for its sandbox, its package is installed, or there is nothing to ask its prompt with
configuration.local_changed config Something else saved .env.local while jadpo config set was saving a value in it
configuration.local_invalid_encoding config The .env.local file holds bytes that aren't UTF-8 text
configuration.local_read_failed config The .env.local file is there, but it couldn't be read: it is a folder, or you aren't allowed to read it
configuration.local_syntax config A line of .env.local isn't blank, a # comment or NAME=value, or it sets a variable a line above it already sets
configuration.local_unsafe_target config The .env.local file that jadpo config set would save a value in is a link, not an ordinary file
configuration.local_write_failed config Saving a value in .env.local failed, usually because the project's folder can't be written
configuration.move_name_taken config move, the editor A constant jadpo config move was asked to make a setting has the name of a setting config { } already declares
configuration.move_read_unsupported config move, the editor A constant jadpo config move was asked to make a setting is read where a setting can't be: in a query, an update by id, a backfill or another constant's value
configuration.move_type_unsupported config move, the editor A constant jadpo config move was asked to make a setting has a type one environment variable can't hold, such as a list or an object
configuration.value_invalid config, dev A setting's value on this machine, from the environment or .env.local, doesn't fit the type config.jadpo gives it
configuration.value_missing config, dev A setting config.jadpo declares without a default: has no value on this machine, in the environment or .env.local
email.browser_failed email open A jadpo email open command couldn't start the browser to open a mail's link
format.changes_required fmt A file jadpo fmt --check read isn't laid out as jadpo fmt would write it
format.unsafe fmt A file was left as it was, because what the formatter made of it didn't read back as the same code, which is a mistake in Jadpo's formatter
format.write_failed fmt A file jadpo fmt formatted couldn't be written, usually because it is read-only
index.accept_check_failed schema index-accept Index edit did not pass project checks
index.accept_identity_count schema index-accept Index acceptance changed an unexpected number of schema identities
index.accept_range_invalid schema index-accept Recommended index insertion point is no longer valid
index.accept_registry_missing schema index-accept Schema identity registry is required before accepting an index
index.accept_rollback_failed schema index-accept Failed index edit could not be rolled back
index.accept_source_read_failed schema index-accept Source file for the recommended index could not be read
index.accept_source_write_failed schema index-accept Recommended index could not be written to source
index.recommendation_field_missing schema index-accept Recommended field no longer exists
index.recommendation_unknown schema index-accept Index recommendation is not current
install.fetch_failed package add, update Installing a package couldn't read its git repository, or found no release there at the tag you gave (Installing errors)
install.in_use package remove Package to remove is still used by the app (Installing errors)
install.link_refused check, test in CI Linked package in a CI or production build (Installing errors)
install.surface_mismatch package add, update The package you are installing has code that offers something different from its committed surface.jadpo_record (Installing errors)
lsp.content_length_missing lsp Language-server message has no Content-Length header
lsp.json_invalid lsp Language-server message is not valid JSON
lsp.json_write_failed lsp Language-server response could not be encoded
lsp.read_failed lsp Language-server input could not be read
lsp.root_missing lsp Language server has no workspace root
lsp.write_failed lsp Language-server response could not be written
migration.decision_artifact_exists schema Migration decision file already exists
migration.decision_artifact_invalid schema Migration decision file is invalid
migration.decision_artifact_read_failed schema Migration decision file could not be read
migration.decision_artifact_write_failed schema Migration decision template could not be written
migration.decision_change_set_stale schema Migration decisions refer to a different change set
migration.decision_duplicate schema Schema change has more than one migration decision
migration.decision_evidence_duplicate schema Migration decision repeats an evidence kind
migration.decision_evidence_empty schema Migration decision contains empty evidence
migration.decision_evidence_missing schema Migration decision is missing required evidence
migration.decision_evidence_unexpected schema Migration decision contains unsupported evidence
migration.decision_missing schema Schema change has no migration decision
migration.decision_strategy_invalid schema Migration strategy is not valid for this change
migration.decision_unexpected schema Decision file contains an unrelated schema change
migration.decision_unresolved schema Migration decision still needs a strategy
migration.identity_additions_have_removal schema Schema additions cannot be registered while identities are missing
migration.identity_registry_exists schema Schema identity registry already exists
migration.identity_registry_missing schema Schema identity registry is missing
migration.identity_registry_read_failed schema Schema identity file could not be read
migration.identity_registry_write_failed schema Schema identity registry could not be written
migration.identity_rename_kind schema Schema rename kind is not supported
migration.identity_rename_source_unknown schema Schema rename source identity does not exist
migration.identity_rename_target_exists schema Schema rename target already has an identity
migration.identity_rename_target_unknown schema Schema rename target is absent from checked source
migration.identity_snapshot_exists schema Schema snapshot output already exists
migration.identity_snapshot_invalid schema Schema snapshot is invalid
migration.identity_snapshot_missing schema Previous schema snapshot is missing
migration.identity_snapshot_not_canonical schema Previous schema snapshot is not canonical
migration.identity_snapshot_shape_missing schema Snapshot entry is missing its saved definition
migration.identity_snapshot_write_failed schema Schema snapshot could not be written
migration.plan_adapter_invalid schema Migration adapter is not supported
migration.plan_decision_rejects_change schema Reviewed decision rejects this schema change
migration.plan_exists schema Migration plan output already exists
migration.plan_write_failed schema Migration plan could not be written
migration.sql_change_unsupported schema Schema change has no SQL review generator
migration.sql_expression_unsupported schema Backfill expression cannot be compiled to SQL
migration.sql_field_owner_missing schema Migration field has no resolvable owning table
migration.sql_field_shape_invalid schema Saved field definition is incomplete
migration.sql_literal_invalid schema Backfill literal is invalid for the field type
migration.sql_predicate_unsupported schema Validation check cannot be compiled to SQL
migration.sql_review_exists schema Migration SQL review output already exists
migration.sql_review_write_failed schema Migration SQL review could not be written
migration.sql_sqlite_constraint_missing schema SQLite rebuild cannot resolve a constraint identity
migration.sql_sqlite_entity_missing schema SQLite rebuild cannot find the current entity
migration.sql_sqlite_field_identity_missing schema SQLite rebuild cannot resolve a field identity
migration.sql_sqlite_field_missing schema SQLite rebuild cannot find the current field
migration.sql_sqlite_index_missing schema SQLite rebuild cannot resolve an index identity
migration.sql_sqlite_rebuild_required schema SQLite change requires a table rebuild
migration.sql_sqlite_rebuild_unsupported schema This combination of SQLite table changes is not supported
migration.sql_sqlite_reference_missing schema SQLite rebuild cannot resolve a reference target
migration.sql_sqlite_renamed_table_unsupported schema SQLite rebuild cannot target a logically renamed table
migration.sql_strategy_unsupported schema Reviewed migration strategy has no SQL implementation
migration.sql_type_unsupported schema Field type has no migration SQL mapping
publish.behaviour_changed package check, package verify An example or test of a package's last release fails against its new version, and the change isn't marked a fix (Publishing errors)
publish.breaking_change package check A package's new version changes or removes something its last release offered, within the same major version (Publishing errors)
publish.changelog_missing package check Package's changelog doesn't say why its new version is released (Publishing errors)
publish.description_missing package check Package's public declaration has no description (Publishing errors)
publish.example_failed package check Example in a package's description doesn't compile or doesn't hold (Publishing errors)
publish.example_missing package check Package's function has no example, or a failure it raises is shown by none (Publishing errors)
publish.file_not_allowed package verify A commit holds a file a release can't: anything but Jadpo source and the package's text files (Publishing errors)
publish.licence_proprietary package verify, package publish A package's licence is Licence.proprietary, which the public registry refuses (Publishing errors)
publish.publisher_mismatch package verify, package publish A release names another publisher than the one asked to publish it (Publishing errors)
publish.publisher_missing package verify, package publish A package's index names no publisher, and it has to for the registry (Publishing errors)
publish.sample_missing package check Package's recipes have no sample app with one domain to compile in (Publishing errors)
publish.stale_files package verify A commit's surface.jadpo_record or changelog list isn't what the package's code gives (Publishing errors)
publish.too_large package verify A commit's release is past the size limit (Publishing errors)
runtime.outcome_unknown the running app Generated runtime could not confirm whether an effect committed
runtime.startup_failed the running app Generated runtime failed during startup; a deployable's log event, with every problem that stopped it (A native deployable)
runtime.unhandled_fault the running app Generated runtime contained an unexpected fault
suggest.record_invalid suggest A suggestions record jadpo suggest reads, ignored_suggestions.jadpo_record or taught_suggestions.jadpo_record, isn't as Jadpo writes it
suggest.share_failed suggest share Jadpo HQ couldn't be reached, or refused what jadpo suggest share sent, so the entries wait to be shared again
test.failed test, package check A test failed under jadpo test, or among a package's own tests under jadpo package check
test.no_tests test A jadpo test command found no test to run: the project has none, or none matches the path, line, name, kind or --failed it gives
test.runtime_start_failed test The tests couldn't start, because the machine couldn't give jadpo test the thread with a large stack they run on, usually for lack of memory
toolchain.artifact_cleanup_failed artifacts, build Previous build backup could not be removed
toolchain.artifact_promote_failed artifacts, build Staged build artifacts could not be promoted
toolchain.artifact_stage_failed artifacts, build Build staging directory could not be created
toolchain.artifact_write_failed check, build A file Jadpo writes for you, such as a record, couldn't be written, usually because it or its folder is read-only
toolchain.build_failed build The Rust jadpo build wrote for a deployable didn't compile, because the machine lacks something the build runs, such as a C compiler, or because of a mistake in Jadpo
toolchain.fetch_failed build The Rust toolchain or the crates jadpo build compiles with couldn't be fetched, usually because the server they come from, or the mirror in its place, can't be reached
toolchain.project_not_found any command You ran a command that works on a project in a folder with no app.jadpo, in it or in any folder above it
toolchain.project_read_failed any command Project directory could not be read
toolchain.scaffold_destination_exists new, package new You ran jadpo new or jadpo package new with the name of a file that already exists
toolchain.scaffold_destination_not_empty new, package new You ran jadpo new or jadpo package new on a folder that already has files in it, hidden files included
toolchain.scaffold_name_invalid new You ran jadpo new with a path that doesn't end in a folder's name, such as .. or /
toolchain.scaffold_read_failed new, package new You ran jadpo new or jadpo package new on a path Jadpo can't look into, such as a folder you can't read or a path through a file
toolchain.scaffold_write_failed new, package new You ran jadpo new or jadpo package new, and writing its files failed, usually because the folder they go in can't be written
toolchain.source_read_failed any command A .jadpo file in the project couldn't be read, because it isn't UTF-8 text or you aren't allowed to read it
toolchain.target_auth_not_implemented build Protected route {route} cannot be generated yet
toolchain.target_durable_workflow_not_implemented build Durable workflow target execution is not implemented
toolchain.target_job_not_implemented build Scheduled job {name} cannot execute yet
toolchain.target_liveness_not_local build Authored liveness route is not dependency-free
toolchain.target_store_not_implemented build Authority store target adapter is not implemented
translation.exchange_file_invalid translations export, translations import A file given to jadpo translations import isn't XLIFF 2.x or JSON in the shape export writes, or can't be read as one
translation.exchange_unit_unknown translations import A file given to jadpo translations import holds a unit of wording the project doesn't have

Three errors can't be reached at all: type.job_delivery_selector_invalid (Delivery selector does not match its entity types), type.job_delivery_service_invalid (Delivery service does not match its closed payload types) and type.job_delivery_sealed_use (Compiler-owned delivery value cannot be authored or exposed). They belong to a job delivery descriptor, which the language doesn't have.

Markdown for agents: /docs/command-errors.md.Built from Jadpo main at aee2e8f.