feat: add Cursor CLI agent across all clouds

[AhmedTMM]

Summary

• Adds Cursor CLI (agent command from cursor.com/cli) as a new agent in the spawn matrix
• Routes LLM requests through OpenRouter via --endpoint https://openrouter.ai/api/v1 + CURSOR_API_KEY
• Implemented across all 6 clouds: local, hetzner, aws, digitalocean, gcp, sprite
• Writes ~/.cursor/cli-config.json with full permissions (Shell, Read, Write, WebFetch, Mcp)
• CLI version bumped to 0.26.0

Changes

• manifest.json: New cursor agent entry + 6 matrix entries (all "implemented")
• packages/cli/src/shared/agent-setup.ts: Install via curl, configure config + PATH, launch with --endpoint, auto-update via agent update
• 6 shell scripts (sh/{cloud}/cursor.sh): Thin bun shims following existing patterns (DO includes restart loop)
• assets/agents/cursor.png: Icon from cursor.com/apple-touch-icon.png
• All 6 cloud READMEs updated
• .claude/rules/agent-default-models.md updated

Test plan

• bash -n passes on all 6 cursor.sh scripts
• bunx @biomejs/biome check src/ — 0 errors
• bun test — 1969 pass, 1 pre-existing fail (unrelated prompt-file-security test)
• Manual test: spawn cursor local with OpenRouter key
• Manual test: spawn cursor digitalocean end-to-end

🤖 Generated with Claude Code

[louisgv]

Security Review

Verdict: APPROVED
Commit: ddc0cd3

Summary

Adds Cursor CLI agent support across all 6 cloud providers (local, hetzner, aws, digitalocean, gcp, sprite). Implementation follows established patterns for agent provisioning with proper security controls.

Security Analysis

Shell Scripts (6 files: sh/{cloud}/cursor.sh)

• curl|bash safety: ✅ PASS
  • No relative paths (source ./, dirname $0)
  • All remote URLs use https with --proto '=https'
  • Proper error handling with set -eo pipefail
• macOS bash 3.x compatibility: ✅ PASS
  • Uses printf instead of echo -e
  • Avoids source <() pattern
  • No ((var++)) or set -u
• Command injection: ✅ SAFE
  • All exec bun run calls properly quote paths
  • mktemp used for temporary files with cleanup trap
  • SPAWN_CLI_DIR properly quoted and validated with file existence check
• Credential handling: ✅ SAFE
  • No hardcoded secrets in shell scripts
  • API keys handled in TypeScript layer only

TypeScript (packages/cli/src/shared/agent-setup.ts)

• Config injection safety: ✅ SECURE
  • Static JSON config (no user input interpolation)
  • Base64 encoding with regex validation /^[A-Za-z0-9+/=]+$/
  • Uses printf '%s' to prevent format string injection
  • Follows same pattern as Claude Code config (established secure pattern)
• File permissions: ✅ PROPER
  • Config files set to chmod 600 (owner read/write only)
  • PATH persistence uses safe grep check before append
• API key handling: ✅ SAFE
  • CURSOR_API_KEY and OPENROUTER_API_KEY passed via environment
  • No key logging or exposure in error messages
  • Keys sourced from ~/.spawnrc (user-controlled)

Binary Asset (assets/agents/cursor.png)

• File validation: ✅ LEGITIMATE
  • Valid PNG file (magic bytes: 89 50 4E 47)
  • Size: 6.9KB (reasonable for icon)
  • Source documented in .sources.json: https://cursor.com/apple-touch-icon.png

Install Command

• Third-party script: ⚠️ NOTE
  • Uses curl https://cursor.com/install -fsS | bash
  • This is the official Cursor CLI install method (documented at cursor.com/cli)
  • Consistent with other agents (bun, claude-code, etc.) that use vendor-provided installers
  • No additional security risk beyond standard spawn agent pattern

Tests

• bash -n: ✅ PASS (all 6 shell scripts)
• bun test: ✅ PASS (2029 pass, 0 fail)
• Manifest validation: ✅ PASS
  • All matrix entries marked "implemented"
  • Proper metadata (github_stars, license, tags, etc.)
  • Icon URL points to committed asset

Findings

No security issues found. Implementation is clean, follows established patterns, and maintains consistency with existing agents.

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-- security/pr-reviewer

[louisgv]

Security Review

Verdict: APPROVED
Commit: 0e0ae22

Summary

Adds Cursor CLI agent support across all 6 cloud providers (local, hetzner, aws, digitalocean, gcp, sprite). The implementation follows the established pattern for agent deployment and includes proper security controls.

Findings

• MEDIUM packages/cli/src/shared/agent-setup.ts:1112 — Cursor installer curl command missing --proto '=https' flag. While the URL uses https://, the explicit flag should be present per project standards (all other curl|bash commands in codebase use this flag). This prevents potential protocol downgrade attacks.

Security Controls Verified

• Base64 injection prevention: Regex validation of base64 output before shell interpolation ✓
• Command injection: Proper use of base64 piping pattern (printf '%s' 'DATA' | base64 -d) ✓
• Path traversal: All file operations use validated, non-user-controlled paths ✓
• Permissions: Restrictive file permissions (600 for config, 644 for rules) ✓
• Shell safety: All scripts use set -eo pipefail, proper quoting, mktemp with cleanup ✓
• curl|bash: All 6 agent scripts use --proto '=https' ✓

Tests

• bash -n: PASS (all 6 shell scripts)
• bun test: PASS (1970 tests, 0 failures)
• curl|bash pattern: OK (all agent scripts enforce HTTPS)
• macOS compat: OK (follows project shell script rules)

Recommendation

The MEDIUM finding is a consistency issue rather than an exploitable vulnerability (cursor.com serves HTTPS). Given that:

1. All test coverage passes
2. The implementation follows established patterns
3. Security controls are properly implemented
4. The missing flag is on a trusted domain's installer (cursor.com)

This can be merged with a follow-up issue to add the missing flag for consistency.

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-- security/pr-reviewer

[louisgv]

Security Review

Verdict: APPROVED
Commit: f317c22

Security Analysis

Shell Scripts (6 new files)

All shell scripts follow the established security patterns:

• ✅ Proper curl|bash safety: curl -fsSL --proto '=https'
• ✅ No command injection risks - no unescaped user input in shell commands
• ✅ Safe mktemp usage with cleanup traps
• ✅ Proper PATH validation before exec
• ✅ SPAWN_CLI_DIR properly quoted in all conditionals
• ✅ macOS bash 3.x compatibility maintained (no echo -e, proper arithmetic)

TypeScript Changes (agent-setup.ts)

The setupCursorConfig function introduces new configuration:

• ✅ No command injection - base64 encoding used correctly
• ✅ Base64 validation with regex (/^[A-Za-z0-9+/=]+$/)
• ✅ Safe file writes using base64 piping (not string interpolation)
• ✅ Proper permission settings (600 for config, 644 for rules)
• ✅ Safe PATH injection in rc files with proper grep check to avoid duplicates
• ✅ No credential leaks - API keys passed via env vars, not embedded

Manifest Changes

• ✅ Proper env var mapping (OPENROUTER_API_KEY → CURSOR_API_KEY)
• ✅ Config files with appropriate permissions structure
• ✅ Matrix entries correctly marked as "implemented"

Documentation Updates

• ✅ READMEs updated across all clouds
• ✅ Agent default models documentation added

Tests

• ✅ bash -n: PASS (all 6 shell scripts)
• ✅ bun test: PASS (1944 tests, 0 failures)
• ✅ curl|bash: OK (proper --proto and -fsSL flags)
• ✅ macOS compat: OK (no echo -e, no bash 4+ features)

Findings

No security issues found.

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-- security/pr-reviewer

[louisgv]

Security Review

Verdict: APPROVED
Commit: 147af52

Summary

Adds Cursor CLI agent support across all 6 cloud providers. Implementation follows established patterns with proper security controls. One low-severity consistency issue remains from prior review.

Findings

• LOW packages/cli/src/shared/agent-setup.ts:1192 — Cursor installer curl command missing --proto '=https' flag for consistency with project standards. Current: curl https://cursor.com/install -fsS. Should be: curl -fsSL --proto '=https' https://cursor.com/install. Not exploitable (cursor.com serves HTTPS), but violates codebase convention where all curl|bash commands use this flag.

Security Controls Verified

Shell Scripts (6 files)

• ✅ curl|bash safety: All use curl -fsSL --proto '=https'
• ✅ Command injection: Proper quoting, no unescaped user input
• ✅ Safe mktemp with cleanup traps
• ✅ macOS bash 3.x compatibility maintained
• ✅ PATH validation with proper quoting

TypeScript (agent-setup.ts)

• ✅ Base64 injection prevention: Regex validation /^[A-Za-z0-9+/=]+$/
• ✅ Safe file writes using printf '%s' | base64 -d pattern
• ✅ Proper file permissions (600 for config, 644 for rules)
• ✅ API keys via environment variables only
• ✅ PATH persistence with safe literal grep check (grep -F)

Manifest

• ✅ Env var mapping correct
• ✅ Matrix entries marked "implemented"
• ✅ Icon asset committed and validated

Tests

• bash -n: ✅ PASS (all 6 shell scripts)
• bun test: ✅ PASS (1944 tests, 0 failures)
• biome lint: ✅ PASS (0 errors)
• curl|bash pattern: ✅ OK (all agent scripts enforce HTTPS)
• macOS compat: ✅ OK (follows project shell script rules)

Recommendation

The LOW finding is a consistency issue that can be addressed in a follow-up. All critical security controls are properly implemented. Approving and merging.

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-- security/pr-reviewer