Claude Code · coding tool history

2026

of 18

v0.2.93 Apr 22, 2026 major

Adds TodoWrite/TodoRead task management

A new "Task Management" section was introduced, instructing the assistant to use TodoWrite and TodoRead tools frequently for planning and tracking tasks, including marking todos as in-progress and completed incrementally. The "Doing tasks" workflow was updated to explicitly include TodoWrite as a planning step, and a new IMPORTANT directive mandates always using TodoWrite throughout the conversation. Two worked examples were added to illustrate the expected todo-driven workflow.

toolsTool added / TodoRead: new tool description
schemasSchema added / TodoRead: new input schema
toolsTool added / TodoWrite: new tool description

PromptsSchemasToolsTransporttool-useworkflow

Split-view diff8 fields changedtools · 5prompts · 2transport · 1

Field	Before	After
toolsTodoRead	—	added
toolsTodoWrite	—	added
toolsBatch / description	previous description	description changed (+8,916 chars, +166 lines)
toolsTask / description	previous description	description changed (+21 chars)
toolstool count	12	14
promptstotal prompt size	10,405 chars	12,941 chars (+2,536)
promptsblock 1	previous text	text changed (+2,536 chars)
transportheader / user_agent	claude-cli/0.2.92 (external)	claude-cli/0.2.93 (external)

2026

of 18

v1.0.0 Apr 22, 2026 notable

Model bump and parallel tool-call guidance rewrite

The default model was updated from claude-3-7-sonnet-20250219 to claude-sonnet-4-20250514. The parallel tool-call instruction was reworded to drop the reference to a "Batch" tool in favor of describing native multi-tool calls in a single message. Working directory and directory snapshot paths also changed to reflect a new ephemeral temp directory.

toolsTool removed / Batch: tool removed
schemasSchema removed / Batch: input schema removed
toolsTool description / Bash: description +728 chars

ModelPromptsSchemasToolsTransporttool-useenvironment

Split-view diff12 fields changedtools · 7prompts · 2transport · 2model · 1

Field	Before	After
toolsBatch	present	—
toolsBash / description	previous description	description changed (+728 chars)
toolsEdit / description	previous description	description changed (-2,730 chars, -49 lines)
toolsMultiEdit / description	previous description	description changed (-15 chars)
toolsTask / description	previous description	description changed (-7 chars)
toolsWrite / description	previous description	description changed (-10 chars, -6 lines)
toolstool count	16	15
promptstotal prompt size	12,780 chars	13,022 chars (+242)
promptsblock 1	previous text	text changed (+242 chars)
modelmodel	claude-3-7-sonnet-20250219	claude-sonnet-4-20250514
transportheader / user_agent	claude-cli/0.2.126 (external)	claude-cli/1.0.0 (external)
transportheader / anthropic_beta	—	{"added": ["interleaved-thinking-2025-05-14"], "removed": []}

2026

of 18

v1.0.60 Apr 22, 2026 notable

Proactive specialized-agent Task tool guidance

A new policy line instructs the assistant to proactively use the Task tool with specialized agents whenever the task matches an agent's description, encouraging smarter agent delegation beyond just file search. The working directory path was also updated, reflecting a new ephemeral temp directory for the runner environment — a routine session-level change with no semantic impact.

toolsTool description / Task: description +1,681 chars
schemasTool schema / Task: properties +subagent_type / required changed
promptsPrompt block / 1: +122 chars

PromptsSchemasToolsTransporttool-useworkflowenvironment

Split-view diff5 fields changedprompts · 2tools · 1schemas · 1transport · 1

Field	Before	After
toolsTask / description	previous description	description changed (+1,681 chars, +43 lines)
schemasTask	required list changed	now has: subagent_type · required list changed
promptstotal prompt size	13,100 chars	13,222 chars (+122)
promptsblock 1	previous text	text changed (+122 chars)
transportheader / user_agent	claude-cli/1.0.59 (external, cli)	claude-cli/1.0.60 (external, cli)

2026

of 18

v2.0.0 Apr 22, 2026 major

Major workflow and convention guidance removed

The "Following conventions", "Code style", and most of the "Doing tasks" workflow sections were deleted, removing guidance on mimicking code style, checking for library availability, avoiding comments, using search tools, running lint/typecheck, and the explicit prohibition on committing without user consent. A new tool-use directive was added instructing the model to prefer dedicated file tools (Read, Edit, Write) over equivalent Bash commands. The backing model was also bumped from claude-sonnet-4 to claude-sonnet-4-5.

toolsTool removed / MultiEdit: tool removed
schemasSchema removed / MultiEdit: input schema removed
toolsTool description / Bash: description +1,052 chars

ModelPromptsSchemasToolsTransportworkflowtool-useenvironment

Split-view diff7 fields changedtools · 3prompts · 2model · 1transport · 1

Field	Before	After
toolsMultiEdit	present	—
toolsBash / description	previous description	description changed (+1,052 chars, +10 lines)
toolstool count	16	15
promptstotal prompt size	13,890 chars	12,351 chars (-1,539)
promptsblock 1	previous text	text changed (-1,539 chars)
modelmodel	claude-sonnet-4-20250514	claude-sonnet-4-5-20250929
transportheader / user_agent	claude-cli/1.0.128 (external, cli)	claude-cli/2.0.0 (external, cli)

2026

of 18

v2.0.73 Apr 22, 2026 notable

Remove task-completion mandate, minor wording updates

The prominent "IMPORTANT" directive instructing the assistant to never stop mid-task and always claim unlimited context was removed entirely. The example for using a specific Claude Code feature was updated from "write a slash command" to "write a skill", and the working directory path was refreshed to a new temp directory.

toolsTool removed / SlashCommand: tool removed
schemasSchema removed / SlashCommand: input schema removed
toolsTool description / Skill: description +368 chars

PromptsSchemasToolsTransportworkflowpersonaenvironment

Split-view diff7 fields changedtools · 3prompts · 2schemas · 1transport · 1

Field	Before	After
toolsSlashCommand	present	—
toolsSkill / description	previous description	description changed (+368 chars, +8 lines)
schemasSkill	previous schema	now has: args
toolstool count	18	17
promptstotal prompt size	13,428 chars	13,130 chars (-298)
promptsblock 1	previous text	text changed (-298 chars)
transportheader / user_agent	claude-cli/2.0.72 (external, cli)	claude-cli/2.0.73 (external, cli)

2026

of 18

v2.0.77 Apr 22, 2026 notable

Remove doc-lookup agent, add colon-before-tool rule

The self-documentation lookup block — which directed Claude to use a `claude-code-guide` subagent when users asked about Claude Code features or the Agent SDK — was removed entirely. A new style rule was added instructing the model not to place a colon before tool calls, since tool output may not be visible in the rendered response. A stale working-directory path was also refreshed.

toolsTool description / AskUserQuestion: description +236 chars
schemasTool schema / AskUserQuestion: schema changed
toolsTool description / Bash: description -67 chars

PromptsSchemasToolsTransporttool-useformattingworkflow

Split-view diff26 fields changedschemas · 18tools · 5prompts · 2transport · 1

Field	Before	After
toolsAskUserQuestion / description	previous description	description changed (+236 chars, +2 lines)
schemasAskUserQuestion	previous schema	updated schema
toolsBash / description	previous description	description changed (-67 chars, -4 lines)
schemasBash	previous schema	updated schema
schemasEdit	previous schema	updated schema
schemasEnterPlanMode	previous schema	updated schema
toolsExitPlanMode / description	previous description	description changed (-79 chars, -1 lines)
schemasExitPlanMode	previous schema	updated schema
schemasGlob	previous schema	updated schema
schemasGrep	previous schema	updated schema
schemasKillShell	previous schema	updated schema
schemasLSP	previous schema	updated schema
schemasNotebookEdit	previous schema	updated schema
schemasRead	previous schema	updated schema
toolsSkill / description	previous description	description changed (+191 chars, -3 lines)
schemasSkill	previous schema	updated schema
toolsTask / description	previous description	description changed (+140 chars, +1 lines)
schemasTask	previous schema	updated schema
schemasTaskOutput	required list changed	required list changed
schemasTodoWrite	previous schema	updated schema
schemasWebFetch	previous schema	updated schema
schemasWebSearch	previous schema	updated schema
schemasWrite	previous schema	updated schema
promptstotal prompt size	12,913 chars	12,412 chars (-501)
promptsblock 1	previous text	text changed (-501 chars)
transportheader / user_agent	claude-cli/2.0.76 (external, cli)	claude-cli/2.0.77 (external, cli)

2026

of 18

v2.1.20 Apr 22, 2026 notable

Security policy tightened to defensive-only

The security guidance was significantly narrowed: the previous policy permitted dual-use tools (C2 frameworks, credential testing, exploit development) given clear authorization context such as pentesting or CTF engagements, but the new policy restricts assistance to defensive security tasks only and explicitly forbids credential discovery, harvesting, and any code that could be used maliciously. The duplicate security policy block at the bottom of the prompt was also updated to match. Several blank lines were removed throughout the document, and the working directory temp path was updated.

toolsTool description / Bash: description +119 chars
toolsTool description / Edit: description -2 chars
schemasTool schema / Task: properties -allowed_tools

PromptsSchemasToolsTransportsafetypermissionsbugfix

Split-view diff7 fields changedprompts · 3tools · 2schemas · 1transport · 1

Field	Before	After
toolsBash / description	previous description	description changed (+119 chars, +2 lines)
toolsEdit / description	previous description	description changed (-2 chars)
schemasTask	had: allowed_tools	updated schema
promptstotal prompt size	12,637 chars	12,464 chars (-173)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 2	previous text	text changed (-173 chars)
transportheader / user_agent	claude-cli/2.1.19 (external, cli)	claude-cli/2.1.20 (external, cli)

2026

of 18

v2.1.45 Apr 22, 2026 notable

Upgrades to Sonnet 4.6 model

The underlying model was updated from claude-sonnet-4-5-20250929 (Sonnet 4.5) to claude-sonnet-4-6 (Sonnet 4.6). The knowledge cutoff was extended from January 2025 to August 2025. The working directory and billing version header were also updated to reflect the new build.

schemasTool schema / AskUserQuestion: properties +annotations
toolsTool description / Bash: description +0 chars
promptsPrompt block / 0: +0 chars

ModelPromptsSchemasToolsTransportenvironmentpersona

Split-view diff8 fields changedprompts · 3transport · 2schemas · 1tools · 1model · 1

Field	Before	After
schemasAskUserQuestion	previous schema	now has: annotations
toolsBash / description	previous description	description changed (+0 chars)
promptstotal prompt size	12,829 chars	12,819 chars (-10)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 2	previous text	text changed (-10 chars)
modelmodel	claude-sonnet-4-5-20250929	claude-sonnet-4-6
transportheader / user_agent	claude-cli/2.1.44 (external, sdk-cli)	claude-cli/2.1.45 (external, sdk-cli)
transportheader / anthropic_beta	—	{"added": ["adaptive-thinking-2026-01-28", "effort-2025-11-24"], "removed": ["interleaved-…

2026

of 18

v2.1.47 Apr 22, 2026 notable

Adds slash-command skill invocation rule

A new tool-use policy line was added instructing the assistant to treat `/<skill-name>` shorthand (e.g., `/commit`) as user-invocable skills that must be executed via the Skill tool, with an explicit warning not to guess or substitute built-in CLI commands. The working directory path and billing header version were also bumped, reflecting a new runtime snapshot.

toolsTool description / AskUserQuestion: description +261 chars
promptsPrompt block / 0: +0 chars
promptsPrompt block / 2: +308 chars

ModelPromptsToolsTransporttool-useworkflowpermissions

Split-view diff7 fields changedprompts · 3model · 2tools · 1transport · 1

Field	Before	After
toolsAskUserQuestion / description	previous description	description changed (+261 chars)
promptstotal prompt size	12,819 chars	13,127 chars (+308)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 2	previous text	text changed (+308 chars)
modeltemperature	1	null
modelthinking	null	{"type": "adaptive"}
transportheader / user_agent	claude-cli/2.1.45 (external, sdk-cli)	claude-cli/2.1.47 (external, sdk-cli)

2026

of 18

v2.1.53 Apr 22, 2026 major

Major prompt restructure and new safety section

The prompt was substantially reorganized into clearly labeled sections (System, Doing tasks, Executing actions with care, Using your tools, Tone and style, Environment), replacing the prior flat structure. A new "Executing actions with care" section was added with explicit guidance on reversibility, blast radius, and confirming risky actions before proceeding. Several verbose sections—including the TodoWrite usage examples, the "Professional objectivity" and "No time estimates" standalone sections, and the CLI-specific self-description—were condensed or folded into other sections.

toolsTool description / Bash: description +189 chars
toolsTool description / Task: description -103 chars
toolsTool description / Write: description -4 chars

PromptsToolsTransportreorganizationworkflowsafety

Split-view diff7 fields changedtools · 3prompts · 3transport · 1

Field	Before	After
toolsBash / description	previous description	description changed (+189 chars, -9 lines)
toolsTask / description	previous description	description changed (-103 chars, -1 lines)
toolsWrite / description	previous description	description changed (-4 chars)
promptstotal prompt size	12,819 chars	12,549 chars (-270)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 2	previous text	text changed (-270 chars)
transportheader / user_agent	claude-cli/2.1.52 (external, sdk-cli)	claude-cli/2.1.53 (external, sdk-cli)

2026

of 18

v2.1.59 Apr 22, 2026 major

Adds persistent auto-memory system

A full auto-memory subsystem was introduced, giving the agent a persistent directory at a fixed path where it can store and retrieve notes across conversations. Detailed rules govern what to save (stable patterns, architecture decisions, user preferences), what to avoid (session-specific or speculative content), and how to respond to explicit user memory requests. The working directory was also updated to a new temp path, reflecting a fresh runtime environment.

promptsPrompt block / 0: +0 chars
promptsPrompt block / 2: +1,747 chars
transportHeader / user_agent: claude-cli/2.1.58 (external, sdk-cli) -> claude-cli/2.1.59 (external, sdk-cli)

PromptsTransportcontextworkflowenvironment

Split-view diff4 fields changedprompts · 3transport · 1

Field	Before	After
promptstotal prompt size	12,549 chars	14,296 chars (+1,747)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 2	previous text	text changed (+1,747 chars)
transportheader / user_agent	claude-cli/2.1.58 (external, sdk-cli)	claude-cli/2.1.59 (external, sdk-cli)

2026

of 18

v2.1.63 Apr 22, 2026 notable

Task tool renamed to Agent; slash-skill added

All references to the "Task tool" were renamed to the "Agent tool" throughout the workflow guidance. A new instruction was added explaining that `/skill-name` slash-commands (e.g., `/commit`) are shorthand for user-invocable skills and must be executed via the Skill tool, with an explicit warning not to guess or use built-in CLI commands. Environment-specific temp directory paths were also rotated as part of a new session.

toolsTool added / Agent: new tool description
schemasSchema added / Agent: new input schema
toolsTool removed / Task: tool removed

PromptsSchemasToolsTransporttool-useworkflowpersona

Split-view diff10 fields changedtools · 6prompts · 3transport · 1

Field	Before	After
toolsAgent	—	added
toolsTask	present	—
toolsBash / description	previous description	description changed (+0 chars)
toolsEnterPlanMode / description	previous description	description changed (+1 chars)
toolsGrep / description	previous description	description changed (+1 chars)
toolsTodoWrite / description	previous description	description changed (-31 chars)
promptstotal prompt size	14,296 chars	14,607 chars (+311)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 2	previous text	text changed (+311 chars)
transportheader / user_agent	claude-cli/2.1.62 (external, sdk-cli)	claude-cli/2.1.63 (external, sdk-cli)

2026

of 18

v2.1.69 Apr 22, 2026 notable

Memory correction rule enforced

A new explicit rule was added requiring the assistant to immediately update or remove incorrect memory entries when a user issues a correction, preventing the same mistake from recurring in future conversations. The version number and ephemeral temp-directory paths were also bumped to reflect the new environment instance.

toolsTool added / ToolSearch: new tool description
schemasSchema added / ToolSearch: new input schema
toolsTool removed / Agent: tool removed

PromptsSchemasToolsTransportcontextworkflow

Split-view diff25 fields changedtools · 20prompts · 3transport · 2

Field	Before	After
toolsToolSearch	—	added
toolsAgent	present	—
toolsAskUserQuestion	present	—
toolsBash	present	—
toolsEdit	present	—
toolsEnterPlanMode	present	—
toolsEnterWorktree	present	—
toolsExitPlanMode	present	—
toolsGlob	present	—
toolsGrep	present	—
toolsNotebookEdit	present	—
toolsRead	present	—
toolsSkill	present	—
toolsTaskOutput	present	—
toolsTaskStop	present	—
toolsTodoWrite	present	—
toolsWebFetch	present	—
toolsWebSearch	present	—
toolsWrite	present	—
toolstool count	18	1
promptstotal prompt size	14,607 chars	14,869 chars (+262)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 2	previous text	text changed (+262 chars)
transportheader / user_agent	claude-cli/2.1.68 (external, sdk-cli)	claude-cli/2.1.69 (external, sdk-cli)
transportheader / anthropic_beta	—	{"added": ["advanced-tool-use-2025-11-20"], "removed": ["interleaved-thinking-2025-05-14"]…

2026

of 18

v2.1.83 Apr 22, 2026 major

Major memory system overhaul with typed entries

The auto-memory section was substantially rewritten to introduce a structured, typed memory system with four distinct categories: user, feedback, project, and reference. A two-step save process (individual file + MEMORY.md index pointer) replaces the previous freeform approach, and detailed guidance was added on when to access, verify, and distinguish memory from other persistence mechanisms like plans and tasks. Minor environment section cleanup also removed the `<fast_mode_info>` XML block in favor of inline text.

toolsTool removed / Agent: tool removed
schemasSchema removed / Agent: input schema removed
toolsTool removed / Bash: tool removed

PromptsSchemasToolsTransportcontextworkflowpersona

Split-view diff14 fields changedtools · 10prompts · 3transport · 1

Field	Before	After
toolsAgent	present	—
toolsBash	present	—
toolsEdit	present	—
toolsGlob	present	—
toolsGrep	present	—
toolsRead	present	—
toolsSkill	present	—
toolsWrite	present	—
toolsToolSearch / description	previous description	description changed (+9 chars)
toolstool count	9	1
promptstotal prompt size	16,093 chars	26,641 chars (+10,548)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 2	previous text	text changed (+10,548 chars)
transportheader / user_agent	claude-cli/2.1.81 (external, sdk-cli)	claude-cli/2.1.83 (external, sdk-cli)

2026

of 18

v2.1.84 Apr 22, 2026 notable

Over-engineering rules promoted to top-level

The three sub-bullet points under "Avoid over-engineering" were un-indented and promoted to standalone top-level guidelines, removing the parent "Avoid over-engineering" bullet entirely. A new formatting rule was also added instructing the assistant to reference GitHub issues and pull requests using the `owner/repo#123` format for clickable links. The memory path and working directory reflect a new sandbox environment.

toolsTool added / Agent: new tool description
schemasSchema added / Agent: new input schema
toolsTool added / Bash: new tool description

PromptsSchemasToolsTransportworkflowformattingenvironment

Split-view diff14 fields changedtools · 9prompts · 3transport · 2

Field	Before	After
toolsAgent	—	added
toolsBash	—	added
toolsEdit	—	added
toolsGlob	—	added
toolsGrep	—	added
toolsRead	—	added
toolsSkill	—	added
toolsWrite	—	added
toolstool count	1	9
promptstotal prompt size	26,641 chars	26,659 chars (+18)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 2	previous text	text changed (+18 chars)
transportheader / user_agent	claude-cli/2.1.83 (external, sdk-cli)	claude-cli/2.1.84 (external, sdk-cli)
transportheader / anthropic_beta	—	{"added": ["context-management-2025-06-27"], "removed": []}

2026

of 18

v2.1.89 Apr 22, 2026 notable

Session-specific guidance section introduced

Several instructions previously scattered inline (denied tool-call follow-up, Agent/subagent usage, Explore subagent guidance, and slash-skill invocation) were lifted out of their original locations and consolidated into a new "Session-specific guidance" section. The version bump and ephemeral temp-directory paths also updated, reflecting a new runner session.

toolsTool description / Agent: description +914 chars
schemasTool schema / Read: schema changed
promptsPrompt block / 0: +0 chars

PromptsSchemasToolsTransportreorganizationworkflowtool-use

Split-view diff8 fields changedprompts · 5tools · 1schemas · 1transport · 1

Field	Before	After
toolsAgent / description	previous description	description changed (+914 chars, +13 lines)
schemasRead	previous schema	updated schema
promptstotal prompt size	26,738 chars	26,768 chars (+30)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 1	previous text · cache=ephemeral	metadata changed · cache=none
promptsblock 2	previous text	text changed (-14,897 chars)
promptsblock 3	—	new prompt block
transportheader / user_agent	claude-cli/2.1.87 (external, sdk-cli)	claude-cli/2.1.89 (external, sdk-cli)

2026

of 18

v2.1.111 Apr 22, 2026 major

Major workflow and output guidance overhaul

Several coding-behavior bullet points were consolidated, removed, or rewritten: guidance on reading files before modifying, time estimates, error diagnosis, and abstraction helpers was replaced or tightened. A new "Text output" section was added prescribing concise live updates, one-sentence pre-tool announcements, and strict end-of-turn summaries. Hard word-count limits (≤25 words between tool calls, ≤100 words for final responses) were introduced at the end.

toolsTool added / ScheduleWakeup: new tool description
schemasSchema added / ScheduleWakeup: new input schema
toolsTool description / Agent: description +0 chars

PromptsSchemasToolsTransportworkflowformattingpersona

Split-view diff13 fields changedtools · 6prompts · 4transport · 2schemas · 1

Field	Before	After
toolsScheduleWakeup	—	added
toolsAgent / description	previous description	description changed (+0 chars)
toolsBash / description	previous description	description changed (+246 chars)
toolsRead / description	previous description	description changed (-48 chars)
toolsSkill / description	previous description	description changed (+43 chars, -3 lines)
schemasSkill	previous schema	updated schema
toolstool count	9	10
promptstotal prompt size	26,396 chars	25,947 chars (-449)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 2	previous text	text changed (-1,418 chars)
promptsblock 3	previous text	text changed (+969 chars)
transportheader / user_agent	claude-cli/2.1.110 (external, sdk-cli)	claude-cli/2.1.111 (external, sdk-cli)
transportheader / anthropic_beta	—	{"added": ["advisor-tool-2026-03-01"], "removed": []}

2026

of 18

v2.1.154 Jun 3, 2026 major

Major prompt condensation and reorganization

The system prompt was substantially rewritten, cutting it from ~224 lines to ~61 lines by condensing verbose multi-section guidance (task execution, tone, tool use, memory) into tighter prose equivalents. The memory system instructions, coding guidelines, confirmation-before-action rules, and session workflow were all collapsed into shorter paragraphs without removing the underlying policies. The model reference was also bumped from Opus 4.7 to Opus 4.8.

toolsTool description / Agent: description -4,412 chars
toolsTool description / AskUserQuestion: description +137 chars
toolsTool description / Bash: description -9,117 chars

ModelPromptsSchemasToolsTransportreorganizationworkflowcontext

Split-view diff17 fields changedtools · 9prompts · 4transport · 2schemas · 1model · 1

Field	Before	After
toolsAgent / description	previous description	description changed (-4,412 chars, -49 lines)
toolsAskUserQuestion / description	previous description	description changed (+137 chars, -2 lines)
toolsBash / description	previous description	description changed (-9,117 chars, -108 lines)
toolsEdit / description	previous description	description changed (-734 chars, -4 lines)
toolsGlob / description	previous description	description changed (-231 chars, -4 lines)
toolsGrep / description	previous description	description changed (-389 chars, -5 lines)
toolsRead / description	previous description	description changed (-992 chars, -6 lines)
toolsWorkflow / description	previous description	description changed (+1,362 chars, +3 lines)
schemasWorkflow	previous schema	updated schema
toolsWrite / description	previous description	description changed (-378 chars, -5 lines)
promptstotal prompt size	26,294 chars	5,548 chars (-20,746)
promptsblock 0	previous text	text changed (0 chars net)
promptsblock 2	previous text	text changed (-8,785 chars)
promptsblock 3	previous text	text changed (-11,961 chars)
modelmodel	claude-opus-4-7	claude-opus-4-8
transportheader / user_agent	claude-cli/2.1.153 (external, sdk-cli)	claude-cli/2.1.154 (external, sdk-cli)
transportheader / anthropic_beta	—	{"added": ["mid-conversation-system-2026-04-07"], "removed": []}