openai/codex

Documented errors, page 12 of 13. Back to openai/codex

Code / MessageTypeSeverityTags
no-follow filesystem operations require an absolute Windows…
validation error
originating MCP tool call has ambiguous account selection
exception error
originating MCP tool is disabled by app configuration
exception error
CheckTokenMembership failed
exception error
expected example to not match rule
exception error
features.token_budget.auto_compact_fallback_prompt must not…
validation error
MCP client is shut down
exception error
MCP server ' ' was not ready for this step
exception error
Noise channel transport failed
exception error
OAuth logout is only supported for streamable_http…
validation error
the workload identity token URL must use HTTPS or loopback…
exception error
model_catalog_json path
validation error
rate limit
exception error
query parameters are not allowed in path URIs
exception error
writer already taken
exception error
agent role file at .developer_instructions cannot be blank
validation error
cannot contain blank names
validation error
must not have leading or trailing whitespace
validation error
reasoning item merge attempted with different…
exception error
features.token_budget.guidance_message must not exceed
validation error
Codex binary not found at
exception error
compaction item in payload
exception error
model-visible call id
exception error
Invalid JSON-RPC line
exception error
Windows sandbox process spawn is unavailable on this…
exception error
Invalid JSON-RPC payload
exception error
missing program for pipe spawn
validation error
pending interaction edge
exception error
sub-agent activity does not match tool call kind
exception error
features.token_budget.reminder_message_template must not be…
validation error
rules prefix_rule at index
validation error
tool call disappeared during terminal observation linking
exception error
agent_message item in payload
exception error
reasoning item in payload
exception error
rules prefix_rule at index
validation error
unsupported message role
exception error
inference request payload
exception error
max_attempts must be >= 1
validation error
secrets file version
validation error
incremental inference request
exception error
io error while
exception error
duplicate tool call for model-visible call id
exception error
reasoning item in payload
exception error
features.token_budget.auto_compact_fallback_buffer_tokens…
validation error
multiple tool calls matched model-visible call id
exception error
invalid unix timestamp
exception error
mismatched number of fds in SuperExecMessage
exception error
invalid YAML
exception error
tool call disappeared during output linking
exception error
reasoning item in payload
exception error
terminal operation disappeared during observation linking
exception error
invalid
exception error
is not a valid file descriptor
exception error
server overloaded
exception error
Codex config override keys must be non-empty strings
validation error
prepared escalated command must not be empty
exception error
interaction edge was observed with conflicting endpoints
exception error
failed to persist secrets key in keyring
exception error
short datagram write: wrote
exception error
inference response payload
exception error
inference start used thread , but codex turn belongs to
exception error
tool runtime start would create a second terminal operation…
exception error
socket closed while sending frame payload
exception error
terminal session disappeared during reduction
exception error
reasoning item in payload
exception error
terminal session belongs to thread , not
exception error
duplicate MCP correlation for tool call
exception error
inference response referenced unknown call
exception error
terminal operation changed process id from to
exception error
tool call disappeared during conversation linking
exception error
cwd must be valid UTF-8
panic error
reasoning item in payload
exception error
secret value must not be empty
validation error
tool call start used thread
exception error
conversation item disappeared during output linking
exception error
must be at most characters
validation error
missing program for PTY spawn
exception error
codex turn end for used thread , but the turn belongs to
exception error
MCP correlation referenced unknown tool call
exception error
terminal end referenced unknown operation
exception error
failed to load secrets key from keyring for
exception error
tool runtime start referenced unknown call
exception error
environment id must not be empty
validation error
invalid backfill status
exception error
socket closed while receiving frame payload
exception error
duplicate inference start for
exception error
tool call end referenced unknown call
exception error
raw trace event has no reducer implementation
exception error
tool call start referenced unknown Codex turn
exception error
features.rollout_budget.limit_tokens must be positive
validation error
tool call start referenced unknown thread
exception error
tool runtime end referenced unknown call
exception error
duplicate tool call start for
exception error
non-spawn interaction edge
exception error
dispatch terminal request is for
exception error
inference start referenced unknown codex turn
exception error
reasoning item in payload
exception error
tool call start did not include thread or Codex turn context
exception error
inference completion referenced unknown call
exception error
socket closed while receiving frame header
exception error