# Agent Preflight (remote · api.agent-preflight.com)

Budgeted agent preflight: allow|block|reuse|defer|advise. Never executes destination tools. Free MCP

- Trust score: 78/100 (medium)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `api.agent-preflight.com`: 78/100 (this document), [markdown](https://verifymcp.io/servers/com-agent-preflight-agent-preflight/api.md), [page](https://verifymcp.io/servers/com-agent-preflight-agent-preflight/api)

## Channel facts

- Endpoint: `https://api.agent-preflight.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.2.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 68/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 310 tokens (~155/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 100/100
  - No destabilizing schema changes in the last 30 days.
- **Tool Coverage**: 76/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 15% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 2 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Agent Preflight MCP server?

Agent Preflight is a hosted endpoint at https://api.agent-preflight.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-agent-preflight-agent-preflight 'https://api.agent-preflight.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-agent-preflight-agent-preflight": {
      "url": "https://api.agent-preflight.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-agent-preflight-agent-preflight": {
      "type": "http",
      "url": "https://api.agent-preflight.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-agent-preflight-agent-preflight]
url = "https://api.agent-preflight.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-agent-preflight-agent-preflight": {
      "type": "remote",
      "url": "https://api.agent-preflight.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-agent-preflight-agent-preflight --url 'https://api.agent-preflight.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-agent-preflight-agent-preflight:
    url: "https://api.agent-preflight.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-agent-preflight-agent-preflight": {
      "Transport": "http",
      "Url": "https://api.agent-preflight.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-agent-preflight-agent-preflight -t streamable-http -u 'https://api.agent-preflight.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-agent-preflight-agent-preflight": {
      "type": "http",
      "url": "https://api.agent-preflight.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-20 (score 78, +1)

- [security] Stability: 0.97 → pass

### 2026-10-18 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-16 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-14 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-12 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-10 (score 73, +2)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 67. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-06 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 53. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-28 (score 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

## MCP tools (2)

### `check_request` (~112 tokens)

Check Request

Validate an HTTP API request body against a supplied JSON Schema before sending it. This tool does not execute the request. Use it when an agent needs to determine whether a proposed JSON body satisfies its expected schema. Optional economics adds proceed/abort advice from expected waste versus a $0.002 check.

Input parameters:

- `economics` (object): Optional V0.2 cost context. Omit for V0.1 validation-only output.
- `request` (object, required)
- `schema` (object, required): JSON Schema applied to request.body

Output parameters:

- `economics` (object)
- `errors` (array)
- `requestHash` (string)
- `valid` (boolean)
- `warnings` (array)

### `preflight_tool_call` (~198 tokens)

Preflight Tool Call

Free MCP decision for generic search:web_search or browse:fetch proposals only. Returns structuredContent and JSON text, never destination results. Caller supplies cost estimates, post-consultation budget and history, executes tools and retrieves resultReference itself. Reuse requires explicit permission, positive TTL and matching nonempty goal hashes; history must belong to the caller. estimated fees/savings are hypothetical, not receipts; confidence is not calibrated. Paid HTTP is a separate $0.002 per settled POST interface. Full contract: https://agent-preflight.com/docs

Input parameters:

- `budget` (object, required)
- `capabilities` (object)
- `freshnessTtlSeconds` (number)
- `history` (array)
- `preflightPriceUsd` (number)
- `retryCap` (integer)
- `runId` (string, required)
- `stepId` (string, required)
- `task` (object)
- `tool` (object, required)

Output parameters:

- `decision` (string)
- `enforcement` (string)
- `estimated` (object)
- `issues` (array)
- `matchedCallId` (string)
- `reasonCodes` (array)
- `recommendation` (object)
- `requestFingerprint` (string): SHA-256 of version-2 exact proposal; absent on invalid input

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-agent-preflight-agent-preflight/api#diagnostics

## Score history

- 2026-11-05: 78
- 2026-11-04: 78
- 2026-11-03: 78
- 2026-11-02: 78
- 2026-11-01: 78
- 2026-10-31: 78
- 2026-10-30: 78
- 2026-10-29: 78
- 2026-10-28: 78
- 2026-10-27: 78
- 2026-10-26: 78
- 2026-10-25: 78
- 2026-10-24: 78
- 2026-10-23: 78
- 2026-10-22: 78
- 2026-10-21: 78
- 2026-10-20: 78
- 2026-10-19: 77
- 2026-10-18: 77
- 2026-10-17: 76
- 2026-10-16: 76
- 2026-10-15: 75
- 2026-10-14: 75
- 2026-10-13: 74
- 2026-10-12: 74
- 2026-10-11: 73
- 2026-10-10: 73
- 2026-10-06: 71
- 2026-10-04: 70
- 2026-10-03: 70

## Common questions

### What is the Agent Preflight MCP server?

Agent Preflight is an MCP server listed in the public MCP registry as com.agent-preflight/agent-preflight. Budgeted agent preflight: allow|block|reuse|defer|advise. Never executes destination tools. Free MCP. This page covers its hosted endpoint (https://api.agent-preflight.com/mcp).

### Is the Agent Preflight MCP server safe to use?

Agent Preflight scores 78 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Agent Preflight MCP server expose?

Agent Preflight exposes 2 tools: check_request, preflight_tool_call. Their descriptions and schemas cost roughly 310 tokens of context every time the server is loaded.

### Does the Agent Preflight MCP server require authentication?

No. We connected to Agent Preflight without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Agent Preflight MCP server still maintained?

Agent Preflight is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://api.agent-preflight.com/mcp
- Website: https://agent-preflight.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-agent-preflight-agent-preflight/api.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-agent-preflight-agent-preflight/api.json
- HTML version of this page: https://verifymcp.io/servers/com-agent-preflight-agent-preflight/api