Coding agent

Claude Code

Polished Claude-first agent across terminal, IDE, desktop, and web.

Status
Active
License
Proprietary
Evidence
Documented + independently measured configuration, 65 sources
Product record checked
2026-08-22

At a glance

A Claude-centric coding agent with interactive and non-interactive workflows, explicit permissions, native sandboxing, MCP, skills, hooks, plugins, delegated agents, background sessions, and subscription or API authentication.

Good choice if

  • Developers already paying for Claude Pro or Max
  • Interactive and delegated work on large repositories
  • Teams that want hooks, MCP, subagents, and explicit permission modes

Check before choosing

  • The local CLI is host-first: OS sandboxing is disabled by default, may fall back to unsandboxed execution when unavailable unless failIfUnavailable is enabled, and covers Bash subprocesses rather than every tool
  • Worktrees isolate file edits rather than processes; browser control runs in the user's real Chrome profile and can access authenticated sites
  • Checkpoint rewind omits Bash-created file changes and remote side effects; agent teams and agent view are research previews, and parallel background sessions consume subscription quota independently
See 9 more considerations
  • Server-managed settings are not fail-closed on an uncached first launch unless forceRemoteSettingsRefresh is explicitly enabled
  • Hosted model access is Claude-only, local open-weight models are unsupported, and Chrome integration requires a direct Anthropic plan
  • Managed Code Review is a separate Team and Enterprise GitHub surface whose neutral check does not block merges unless users add their own CI gate
  • Plugin marketplaces can install agents, hooks, MCP and LSP servers; organizations must configure marketplace allowlists when arbitrary sources are not acceptable
  • The optional unattended retry watchdog can retry capacity errors indefinitely and other transient failures for roughly three hours, so CI owners still need explicit time and spend boundaries
  • Auto mode is classifier-backed rather than a sandbox: Anthropic's published evaluation reports a 17% false-negative rate on 52 real overeager actions and says it is not a replacement for careful review in high-stakes workflows
  • Zero Data Retention is a separately enabled option for qualifying Enterprise API organizations and excludes web and Cloud sessions, Remote Control, feedback, third-party tools, and MCP integrations
  • The public GitHub repository exposes releases, plugins, examples, and issue automation rather than the proprietary core implementation or product test suite
  • Self-hosted runners execute web, mobile, or desktop sessions on user-managed machines or containers rather than adding a managed isolation boundary; cross-session messaging and held approvals still depend on the configured account, organization, and host controls

Capability support

Documented first-class product support, checked against the sources below.

External tools (MCP)
DocumentedProduct-supported MCP integrationSource · checked 2026-07-27The source establishes the mechanism, not its quality or availability in every mode.
Reusable skills
DocumentedProduct-supported reusable skill packagesSource · checked 2026-08-01Support does not establish portability, package quality, safety, or adoption.
Local models
Not documentedNo first-class support established by the current recordAbsence of current documentation is not proof that the capability is impossible.
Agent parallelism
DocumentedDelegated or parallel agent workflowSource · checked 2026-07-27The source establishes the mechanism, not its quality or availability in every mode.
Runs without an open UI
DocumentedNon-interactive or automation surfaceSource · checked 2026-07-27The source establishes the mechanism, not its quality or availability in every mode.
Browser control
DocumentedBuilt-in or product-supported browser controlSource · checked 2026-07-27The source establishes the mechanism, not its quality or availability in every mode.
Isolated execution
OptionalOptional OS sandbox locally; managed isolation on cloud surfacesSource · checked 2026-07-27Local sandbox coverage depends on configuration and does not contain every process or side effect.
Undo file changes
DocumentedProduct-supported file or session rollbackSource · checked 2026-07-27The source establishes the mechanism, not its quality or availability in every mode.

Getting started

Install Claude Code, authenticate with Claude or an enterprise platform, then run `claude` in a repository.

Open official documentation

Classification and operating model

Category fit and technical mechanisms are evidence records, not product-quality scores.

Category fit
Qualifies, 4/4 criteria
Operating model
7/7 layers documented
Inspect category criteria and operating mechanismsFirst-party records

Why it qualifies as a coding harness

This confirms category fit, not product quality. Every required criterion links back to first-party evidence.

Qualifies4 of 4 required criteria evidenced
  • Adaptive agent loop

    Documented

    The system repeatedly observes results and chooses the next action instead of following a fixed one-pass graph.

  • Repository tool execution

    Documented

    The system can use tools to inspect and change a repository or its execution environment.

  • Task-aware context management

    Documented

    The runtime assembles, updates, compacts, retrieves, or persists task-relevant context while work proceeds.

  • Model-independent runtime control

    Documented

    Permissions, budgets, interruption, policy, or stop controls operate outside the model's own text generation.

Membership establishes category fit only. It does not score quality, safety, autonomy, model capability, or benchmark performance. · Read the membership rule.

How it works under the hood

Seven mechanisms mapped from first-party records. These labels describe what the harness provides, not how intelligent its model is.

7/7layers documented
  • Execution & isolationSandbox availableDocumented mechanism, not a performance score.
  • Tooling & integrationsExtensible + browserDocumented mechanism, not a performance score.
  • Context & statePersistent stateDocumented mechanism, not a performance score.
  • Lifecycle & recoveryCheckpoint/rewindDocumented mechanism, not a performance score.
  • ObservabilityStructured tracesDocumented mechanism, not a performance score.
  • VerificationTool-assistedDocumented mechanism, not a performance score.
  • Governance & permissionsPolicy controlsDocumented mechanism, not a performance score.

Measured and public context

Configuration-specific measurements and source-native activity stay separate from general product capability.

Inspect code audit, measured configurations, and ecosystem signalsContext, not a product score

Public code audit

Unrankedsupport-only repository
Security policy
Present at inspected commit
CI workflow
Not found
Automated tests
Not found
Evaluation assets
Not found
Contributor documentation
Present at inspected commit

The v2.1.220 public tree contains release material, plugins, examples, a security policy, and 12 issue/support automation workflows, but not the proprietary core implementation, engineering tests, or product evaluation suite.

Inspect commit 7ef6eec9d9ba84ea6f233f26c45f1df5c5991843, checked 2026-07-27
Context, not quality

Public ecosystem signals

Source-native observations for exact mapped artifacts and reviewed stable release trains. Different units and populations stay separate, and missing coverage is never treated as zero.

View this harness in Usage
  • Latest stable releasev2.1.263Released 2026-09-06; 73 stable releases in 90 daysOpen release
  • OpenRouter 30d tokens15.8T#2 coding app; 2026-08-09 to 2026-09-07Open app page
  • Homebrew 30d events57.62KCask: claude-codeOpen artifact
  • npm last-month downloads81.48MPackage: @anthropic-ai/claude-codeOpen artifact
  • Release asset downloads516K116 stable releases; 928 matched assetsOpen artifact
  • VS Code installs24.98MExtension: anthropic.claude-codeOpen artifact
  • Open VSX downloads47.1MExtension: Anthropic/claude-code; latest 2.1.263Open artifact
  • JetBrains downloads4.7MPlugin 27310: com.anthropic.code.pluginOpen artifact
  • GitHub stars144.41KSupport repository; 23.07K forksOpen artifact

Routing, package retrievals, release downloads, editor installs, and repository interest observe different populations. They are never added together and never affect capability evidence, classification, or measured results.

Interpretation rulesSignals checked

First-party evidence

Each capability claim links to the first-party record that supports it.

65 first-party sourcesProduct record checked

Product and interfaces

13 sources
View 12 more sources

Execution and control

13 sources
View 12 more sources

Agents, state and recovery

10 sources
View 9 more sources

Automation and extensions

9 sources
View 8 more sources

Enterprise and operations

16 sources
View 15 more sources

Releases and public code audit

4 sources
View 3 more sources