Telemetry Report -- Claude Code v2.1.143
Source: deobfuscated_clean.js
(14.5MB, 19,592 lines, Bun CJS bundle) Date: 2026-06-20
https://api.anthropic.com/api/claude_code/metrics
(HTTP POST, JSON, 5s timeout)
Periodic: Every 5 minutes via PeriodicExportingMetricReader
On shutdown: forceFlush()
before process exit (2s timeout)
Startup perf: Single event at startup (or late startup), sampled at 0.5%
The metrics reader is added to the MeterProvider during app startup in Bx_()
. It is always added for first-party deployments
unless blocked by env vars. The CLAUDE_CODE_ENABLE_TELEMETRY
env var only controls the event logger (logs/traces), not the metric s reader.
$V7() = !Wq$() && (PmH() || (Hq() && subscription in ["enterprise", "team"]))
Condition
Effect
tYq() !== "default"
Metrics disabled Not first-party + not enterprise/team Metrics disabled First-party + not sandboxed + trusted Metrics enabled First-party + trusted + enterprise/team Metrics enabled
Variable
Effect
Values
CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC
Disables metrics
Any truthy value
DISABLE_TELEMETRY
Disables metrics
Any truthy value
DO_NOT_TRACK
Disables metrics
"1"
, "true"
, "yes"
, "on"
CLAUDE_CODE_ENABLE_TELEMETRY
Controls event logger only (NOT metrics)
"1"
, "true"
, "yes"
, "on"
CLAUDE_CODE_PROFILE_STARTUP
Forces startup perf sampling
Any truthy value
CLAUDE_CODE_OTEL_SHUTDOWN_TIMEOUT_MS
Shutdown flush timeout
Number (default: 2000ms)
OTEL_LOGS_EXPORT_INTERVAL
Log export interval
Number (default: SDK default)
OTEL_EXPORTER_OTLP_METRICS_PROTOCOL
Metrics transport
"http/json"
or "http/protobuf"
Trust Gates (per-export check) Before each export, the following must all pass:
Trust established (Hq()
-- sandboxed or authenticated)
Not in a restricted state (!yT()
)
Org settings don't disable it (uJ7().enabled
) -- checked every 24 hours Resource attributes:
service.name
= "claude-code"
service.version
= "2.1.143"
os.type
(e.g., "linux", "darwin", "win32")
os.version
host.arch
(e.g., "x64", "arm64")
wsl.version
(if running under WSL)
user.customer_type
= "claude_ai" or "api"
user.subscription_type
= "free", "plus", "team", "enterprise", etc. Metric data points:
name
-- event name (e.g., "tengu_git_operation")
description
-- human-readable description
unit
-- measurement unit
value
-- numeric value
attributes
-- key-value pairs from the event
timestamp
-- ISO 8601 format
Telemetry Events: 954 unique, 1,330 total calls
All event names are prefixed with tengu_
. Events fire on specific actions, not on a timer (except the periodic export of accumula ted data).
API (16 events, 17 calls)
Event
Data
tengu_api_529_background_dropped
Background request dropped due to 529
tengu_api_after_normalize
Post-normalization state
tengu_api_before_normalize
Pre-normalization state
tengu_api_cache_breakpoints
Cache breakpoint info
tengu_api_custom_529_overloaded_error
529 overloaded response
tengu_api_error
API error details
tengu_api_key_keychain_error
Keychain access failure
tengu_api_key_saved_to_config
API key persisted to config
tengu_api_key_saved_to_keychain
API key persisted to keychain
tengu_api_opus_fallback_triggered
Opus fallback activated
tengu_api_persistent_retry_wait
Long retry wait
tengu_api_query
API request metadata
tengu_api_retry
Retry attempt
tengu_api_retry_after_too_long
Retry-After header exceeded
tengu_api_slow_first_byte
Slow TTFB
tengu_api_success
Successful API response (x2)
OAuth (45 events, 57 calls)
Event
Data
tengu_oauth_401_recovered_from_disk
Token recovered from disk
tengu_oauth_401_recovered_from_keychain
Token recovered from keychain
tengu_oauth_401_sdk_callback_refreshed
SDK callback refresh
tengu_oauth_api_key
API key auth success/failure, status code
tengu_oauth_auth_code_received
OAuth auth code
tengu_oauth_automatic_redirect
Auto-redirect (x2)
tengu_oauth_automatic_redirect_error
Redirect error
tengu_oauth_bedrock_wizard_launched
Bedrock auth wizard
tengu_oauth_claudeai_forced
Forced Claude.ai auth
tengu_oauth_claudeai_selected
Claude.ai selected
tengu_oauth_env_var_api_key
Env var API key detected
tengu_oauth_fallback_to_api_key
Fallback to API key
tengu_oauth_foundry_wizard_launched
Foundry auth wizard
tengu_oauth_github_oauth_flow
GitHub OAuth
tengu_oauth_iam_role_prompted
IAM role prompt
tengu_oauth_keychain_error
Keychain error
tengu_oauth_keychain_success
Keychain success
tengu_oauth_login_success
Login success
tengu_oauth_mfa_required
MFA required
tengu_oauth_org_selection
Org selection
tengu_oauth_org_sso
SSO org
tengu_oauth_profile_fetch_success
Profile fetch
tengu_oauth_roles_stored
org_role
tengu_oauth_sso_login
SSO login
tengu_oauth_token_exchange_success
Token exchange
tengu_oauth_token_refresh_failure
error
tengu_oauth_token_refresh_success
Token refresh ... and 19 more Bedrock, Foundry, Vertex, WIF flows
MCP (43 events, 65 calls)
Event
Data
tengu_mcp_add
MCP config added (x3)
tengu_mcp_auth_config_authenticate
Auth config
tengu_mcp_auth_config_clear
Auth cleared
tengu_mcp_channel_enable
Channel enabled
tengu_mcp_channel_flags
Channel flags
tengu_mcp_channel_gate
Channel gate
tengu_mcp_channel_message
Channel message (x3)
tengu_mcp_claudeai_proxy_401
Proxy 401 (x2)
tengu_mcp_degraded
MCP degraded (x2)
tengu_mcp_delete
MCP config deleted (x2) ... and 33 more Config load, transport, tool calls, errors
ToolUse (23 events, 29 calls)
Event
Data
tengu_tool_empty_result
Empty tool result
tengu_tool_input_json_parse_fail
JSON parse failure
tengu_tool_result_pairing_repaired
Result pairing fixed
tengu_tool_result_persisted
Result persisted
tengu_tool_result_persisted_message_budget
Budget exceeded
tengu_tool_search_mcp_wait
MCP search wait
tengu_tool_search_mode_decision
Search mode decision
tengu_tool_search_outcome
Search result
tengu_tool_use_can_use_tool_allowed
Tool allowed
tengu_tool_use_can_use_tool_rejected
Tool rejected ... and 13 more Tool execution, timeouts, errors
File (21 events, 33 calls)
Event
Data
tengu_file_changed
File changed
tengu_file_history_backup_deleted_file
Backup of deleted file
tengu_file_history_backup_file_created
Backup file created
tengu_file_history_backup_file_failed
Backup failed
tengu_file_history_resume_copy_failed
Resume copy failed
tengu_file_history_rewind_failed
Rewind failed (x2)
tengu_file_history_rewind_restore_file_failed
Restore failed (x5)
tengu_file_history_rewind_success
Rewind success
tengu_file_history_snapshot_failed
Snapshot failed
tengu_file_history_snapshot_success
Snapshot success ... and 11 more File reads, writes, changes, watch events
Session (14 events, 39 calls)
Event
Data
tengu_session_all_projects_toggled
All projects toggle
tengu_session_branch_filter_toggled
Branch filter toggle
tengu_session_file_read
File read event
tengu_session_forked_branches_fetched
Forked branches
tengu_session_group_expanded
Group expanded
tengu_session_linked_to_pr
PR linking
tengu_session_persistence_failed
Persistence failed (x2)
tengu_session_preview_opened
Preview opened
tengu_session_rename_started
Rename started
tengu_session_renamed
Rename completed ... and 4 more Session switch, close, new, load
Agent (15 events, 21 calls)
Event
Data
tengu_agent_color_set
Agent color
tengu_agent_created
Agent created
tengu_agent_definition_generated
Definition generated
tengu_agent_flag
Agent flag
tengu_agent_memory_loaded
Memory loaded (x3)
tengu_agent_name_set
Agent name
tengu_agent_parse_error
Definition parse error
tengu_agent_stop_hook_blocking
Stop hook blocking
tengu_agent_stop_hook_error
Stop hook error (x2)
tengu_agent_stop_hook_max_turns
Max turns reached
tengu_agent_stop_hook_success
Stop hook success
tengu_agent_summary_skipped
Summary skipped
tengu_agent_tool_completed
Tool completed
tengu_agent_tool_selected
Tool selected
tengu_agent_tool_terminated
Tool terminated (x4)
Plugin (26 events, 28 calls)
Event
Data
tengu_plugin_command_failed
Plugin command failed
tengu_plugin_details_command
Plugin details
tengu_plugin_disable_command
Disable command (x2)
tengu_plugin_disabled_all_cli
Disabled all
tengu_plugin_disabled_cli
Disabled single
tengu_plugin_enable_command
Enable command
tengu_plugin_enabled_cli
Enabled single
tengu_plugin_enabled_for_session
Session enable
tengu_plugin_folder_shadowed
Folder shadowed
tengu_plugin_hint_detected
Hint detected ... and 16 more Install, load, error, config, reload
Config (7 events, 18 calls)
Event
Data
tengu_config_auth_loss_prevented
Auth loss prevented (x4)
tengu_config_cache_stats
Cache stats
tengu_config_changed
Config changed (x9)
tengu_config_lock_contention
Lock contention
tengu_config_model_changed
Model changed
tengu_config_parse_error
Parse error
tengu_config_stale_write
Stale write
Shell (5 events, 6 calls)
Event
Data
tengu_shell_completion_failed
Command failed
tengu_shell_set_cwd
Working directory changed (x2)
tengu_shell_snapshot_error
Snapshot error
tengu_shell_snapshot_failed
Snapshot failed
tengu_shell_unknown_error
Unknown error
Permission (2 events, 5 calls)
Event
Data
tengu_permission_request_escape
Escape attempt (x3)
tengu_permission_request_option_selected
User's choice
Model (8 events, 10 calls)
Event
Data
tengu_model_command_inline
Inline model change (x2)
tengu_model_command_inline_help
Inline help (x1)
tengu_model_command_menu
Menu model change (x2)
tengu_model_command_menu_effort
Effort setting
tengu_model_fallback_triggered
Model fallback
tengu_model_picker_hotkey
Hotkey picker
tengu_model_response_keyword_detected
Keyword in response
tengu_model_whitespace_response
Whitespace-only response
Input (5 events, 9 calls)
Event
Data
tengu_input_bash
Bash input
tengu_input_command
Command input (x2)
tengu_input_prompt
Prompt input (x2)
tengu_input_slash_invalid
Invalid slash command (x3)
tengu_input_slash_missing
Missing slash
Daemon (10 events, 11 calls)
Event
Data
tengu_daemon_config_reload
Config reloaded
tengu_daemon_idle_exit
Idle exit
tengu_daemon_lease
Lease (x2)
tengu_daemon_peer_uid_reject
UID rejected
tengu_daemon_self_restart_on_upgrade
Self-restart
tengu_daemon_start
Daemon start
tengu_daemon_worker_crash
Worker crash
tengu_daemon_worker_permanent_exit
Permanent exit
tengu_daemon_yield
Yield
tengu_daemon_yield_takeover
Yield takeover
FeatureFlags (3 events, 3 calls)
Event
Data
tengu_feature_bad
feature_name
, error_code
, additional data
tengu_feature_ok
feature_name
tengu_feature_sad
feature_name
, error_code
FastMode (4 events, 5 calls)
Event
Data
tengu_fast_mode_fallback_triggered
cooldown_duration_ms
, cooldown_reason
tengu_fast_mode_overage_rejected
overage_disabled_reason
tengu_fast_mode_picker_shown
Picker displayed
tengu_fast_mode_toggled
Toggle (x2)
Feedback (3 events, 12 calls)
Event
Data
tengu_accept_feedback_mode_collapsed
Mode collapsed (x4)
tengu_accept_feedback_mode_entered
Mode entered (x4)
tengu_accept_submitted
Feedback submitted (x4)
AskUserQuestion (4 events, 4 calls)
Event
Data
tengu_ask_user_question_accepted
Question accepted
tengu_ask_user_question_finish_plan_interview
Plan interview finished
tengu_ask_user_question_rejected
Question rejected
tengu_ask_user_question_respond_to_claude
Responded to Claude
Event
Data
tengu_git_index_lock_error
Lock error
tengu_git_operation
Git operation (x7)
Prompt (4 events, 12 calls)
Event
Data
tengu_prompt_cache_break
Cache broken
tengu_prompt_cache_diagnosis_received
Diagnosis received
tengu_prompt_suggestion
Suggestion (x4)
tengu_prompt_suggestion_init
Suggestion init (x6)
Event
Data
tengu_rate_limit_lever_hint
Rate limit hint
tengu_rate_limit_options_menu_cancel
Cancelled
tengu_rate_limit_options_menu_select_extra_usage
Extra usage
tengu_rate_limit_options_menu_select_team
Team plan
tengu_rate_limit_options_menu_select_upgrade
Upgrade
Startup (3 events, 3 calls)
Event
Data
tengu_startup_manual_model_config
Manual model config
tengu_startup_perf
import_time
, main_imports
, init_time
, settings_time
, tools_loaded
, mcp_configs
, plugins_init
, headless_setup
, force_login_org
, mcp_connect
, mcp_connect_user
, mcp_connect_connector
, growthbook_init
, prewait
, s andbox_init, `
process_user_input,
total_time,
gap_unaccounted_ms,
free_mem_mb,
load_avg_1m,
checkpoint_count tengu_startup_telemetry`
Telemetry init
Event
Data
tengu_exit_background_work_prompt
Background work prompt
tengu_exit_plan_mode_called_outside_plan
Plan mode outside plan
tengu_unclean_exit
session_age_sec
Event
Data
tengu_wif_user_oauth_lock_acquired
Lock acquired
tengu_wif_user_oauth_lock_released
Lock released
tengu_wif_user_oauth_lock_retry
Lock retry
tengu_wif_user_oauth_lock_retry_limit
Retry limit
Category Events What It Tracks Other 632 @-mentions, attachments, cursor position, rename, rm, slow ops, code index, diff, edit, help, login, memory, op en, skill, stream, update, write, bug reports, claude chrome, config, headless, input, intent, json, keychain, kill, lifecycle, mod el, multi, npm, ollama, parse, rule, search, shell, skill, token, tool_use, user_input, zod, and 600+ more granular events Advisor 6 Advisor dialog, commands, tool calls/interrupts/tokens Agentic 1 Agentic search cancelled Ant 1 Overly broad bash detected ApiKeyHelper 1 Missing trust11 Assistant 1 Assistant install Async 1 Agent stall timeout BugReport 2 Bug report submitted/failed CLI 1 CLI flags Claude 11 Chrome onboarding, CLAUDE.md dialogs, skill loaded, install command Code 2 Code indexing, prompt ignored Diff 1 Diff tool changed Edit 1 Edit string lengths Headless 3 Latency, MCP prewait, plugin install Help 1 Help toggled Login 1 Login from refresh token Memory 2 Threshold crossed, toggled Org 1 Penguin mode fetch failed Open 1 Open agents via left panel Skill 4 File changed, loaded, tool invocation Stream 2 Loop exited, no events Update 2 Update check, refused
OS type and version
Host architecture (x64, arm64, etc.)
WSL version (if applicable)
Free memory (startup perf only)
Load average 1m (startup perf only)
Customer type: "claude_ai" or "api"
Subscription type: "free", "plus", "team", "enterprise", etc.
Service version: "2.1.143"
Every tool call (allowed, rejected, terminated, empty result, JSON parse fail)
Every file operation (read, write, rename, rm, watch, history snapshot/rewind)
Every shell command (completion, failure, CWD change, snapshot)
Every permission prompt (escape attempt, option selected)
Every model change (inline, menu, picker, fallback, whitespace response)
Every input type (bash, command, prompt, invalid/missing slash)
Every @-mention parsing result (success, error, directory, filename, MCP resource)
Every attachment (size, too-large, compute duration)
Every cursor position change
Every session event (file read, branch ops, persistence, rename, preview, PR linking)
Every plugin action (enable, disable, install, load, error, config)
Every MCP action (config add/delete, auth, channel, proxy 401, degraded)
Every git operation and lock error
Every config change, cache stat, lock contention, parse error
Every daemon event (start, idle exit, lease, crash, restart)
Every feedback interaction (mode entered/collapsed, submitted)
Every AskUserQuestion interaction (accepted, rejected, plan interview)
Every rate limit interaction (hint, options menu)
Every fast mode interaction (toggled, picker, fallback, overage)
Every feature flag outcome (ok, bad, sad)
Every agent lifecycle event (creation, memory, stop hooks, tool events)
Every advisor interaction (dialog, command, tool call)
Every OAuth event (token refresh, 401 recovery, auth code, SSO, MFA)
Every API event (query, error, retry, 529, slow first byte, opus fallback)
Every prompt suggestion (init, display)
Every prompt cache event (break, diagnosis)
Every stream event (loop exited, no events)
Every update check and refusal
Every bug report submission
Every skill event (load, file changed, tool invocation)
Every Ollama interaction
Every NPM interaction
Every intent detection
Every JSON parse event
Every keychain event
Every lifecycle event
Every rule event
Every search event
Every token event
Every zod validation event
Startup Performance (sampled 0.5%)
Per-stage timing: import, main imports, init, settings, tools, MCP configs, plugins, headless setup, force login org, MCP connect
, MCP connect user, MCP connect connector, GrowthBook init, prewait, sandbox init, process user input
Total time
Unaccounted time gap
Free memory (MB)
Load average (1m)
Checkpoint count
Message content -- no prompts, responses, or conversation text
File contents -- no file data, only operation metadata
Shell command output -- no stdout/stderr from commands
API keys or tokens -- only success/failure events, never the values
PII -- no names, emails, addresses, or personal identifiers
Source code -- no code content, only operation counts
Terminal content -- no terminal output or screen content
Clipboard data -- no clipboard access
Network request bodies -- only event metadata, not request/response payloads
Environment variable values -- only presence/absence of specific vars, not their values
Aspect
Value
Unique event names
954
Total event calls in code
1,330
Export interval
5 minutes
Startup perf sampling
0.5%
Default enabled
Yes (first-party deployments)
Disable method
DISABLE_TELEMETRY=1
or DO_NOT_TRACK=1
Data destination
api.anthropic.com/api/claude_code/metrics
Transport HTTP POST, JSON Auth Bearer token in request headers PII collected None Message content collected None File content collected None Command output collected None