Claude Code Bridge vs Preflight
A side-by-side look at the Claude Code Bridge and Preflight MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Claude Code Bridge for coding agents work as a local process; choose Preflight for coding agents as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Claude Code Bridge when
- You need dedicated capabilities in the Coding Agents domain.
- You prefer a local stdio subprocess transport.
- You want tools like
bridge_send, bridge_receive, bridge_wait.
Choose Preflight when
- You need dedicated capabilities in the Coding Agents domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
preflight_check, scope_work, clarify_intent.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Coding Agents | Coding Agents |
| Quality signal | 55/100 · Good | 56/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | No auth required |
| Pricing | Not declared | Free |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 14 | 13 |
| Directory activity | 0 views 0 installs 0 upvotes | 5 views 0 installs 0 upvotes |
| Tools | 13 | 24 |
| Full listing | View Claude Code Bridge | View Preflight |
Tools & capabilities
Claude Code Bridge tools 13
bridge_sendSend legacy text or a protocol-v1 message; supports idempotent retriesbridge_receiveRead a bounded page using a message cursor or durable consumer cursorbridge_waitWait up to 55 seconds for new messages without rapid pollingbridge_ackMonotonically advance a consumer's channel-scoped cursorbridge_channelsList active channels and countsbridge_pingCheck bridge health and capabilitiesbridge_statusSummarize recent activity across channelsbridge_clearDelete every message (and task) in one channelbridge_enqueueAdd a task to a channel's work queue (exclusive; claimed once)bridge_claimAtomically claim the next task with a lease; long-poll with `wait_secondsbridge_completeMark a claimed task done, fenced by its `lease_tokenbridge_failFail a claimed task — requeue with backoff, or dead-letter- +1 more on the listing page
Preflight tools 24
preflight_checkThe main entry point.** Triages your prompt (trivial → multi-step), chains the right checks automatically, matches against known correction patterns. Accepts `force_level` override: `skip`, `light`, `full`.scope_workCreates structured execution plans before coding startsclarify_intentGathers project context (git state, workspace docs, ambiguity signals) to disambiguate vague promptsenrich_agent_taskEnriches sub-agent tasks with file paths, patterns, and cross-service contextsharpen_followupResolves "fix it" / "do the others" to actual file targetstoken_auditDetects waste patterns, grades your session A–Fsequence_tasksOrders tasks by dependency, locality, and riskcheckpointSave game before compaction — commits + resumption notescheck_session_healthMonitors uncommitted files, time since commit, turn countlog_correctionTracks corrections and identifies recurring error patternscheck_patternsChecks prompts against learned correction patterns — warns about known pitfallssession_handoffGenerates handoff briefs for new sessions- +12 more on the listing page
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Claude Code Bridge
{
"mcpServers": {
"claude-code-bridge": {
"command": "uvx",
"args": [
"claude-code-bridge"
]
}
}
}
Preflight
{
"mcpServers": {
"preflight-dev-preflight": {
"command": "npx",
"args": [
"-y",
"preflight-dev-serve"
]
}
}
}
Frequently asked questions
Claude Code Bridge is categorized under Coding Agents and uses a local stdio subprocess. Preflight belongs to Coding Agents and uses a local stdio subprocess. Pick Claude Code Bridge for coding agents work and Preflight for coding agents.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Claude Code Bridge has no declared pricing — check the project's own site. Preflight is listed as free. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add claude-code-bridge and preflight-dev-preflight as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Claude Code Bridge has a quality signal of 55/100 (Good) with 0 views, 0 installs and 14 GitHub stars. Preflight has 56/100 (Good) with 5 views, 0 installs and 13 GitHub stars.