Preflight SafeSwap
REMOTE · PREFLIGHT-AGENT.NETLIFY.APP · SCANNED SEP 20
Safe Solana swaps for AI agents with risk checks, unsigned transactions, x402, and 3-bp fees.
Available components
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. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 1 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability74
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 115 tokens (~115/item across 1 items; 1 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability check failed: schema churn in the 19 days we've observed: 2 tool removals, 0 breaking changes, 0 auth/transport breaks, 1 additions. See how to fix → Fail
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 1 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 1 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
How do I install the Preflight SafeSwap MCP server?
Preflight SafeSwap is a hosted endpoint at https://preflight-agent.netlify.app/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.
remote · preflight-agent.netlify.app
claude mcp add --transport http mr8-gif-preflight-safe-swap 'https://preflight-agent.netlify.app/mcp'
{
"mcpServers": {
"mr8-gif-preflight-safe-swap": {
"url": "https://preflight-agent.netlify.app/mcp"
}
}
} {
"servers": {
"mr8-gif-preflight-safe-swap": {
"type": "http",
"url": "https://preflight-agent.netlify.app/mcp"
}
}
} [mcp_servers.mr8-gif-preflight-safe-swap] url = "https://preflight-agent.netlify.app/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"mr8-gif-preflight-safe-swap": {
"type": "remote",
"url": "https://preflight-agent.netlify.app/mcp",
"enabled": true
}
}
} openclaw mcp add mr8-gif-preflight-safe-swap --url 'https://preflight-agent.netlify.app/mcp' --transport streamable-http
mcp_servers:
mr8-gif-preflight-safe-swap:
url: "https://preflight-agent.netlify.app/mcp" {
"McpServers": {
"mr8-gif-preflight-safe-swap": {
"Transport": "http",
"Url": "https://preflight-agent.netlify.app/mcp"
}
}
} assistant mcp add mr8-gif-preflight-safe-swap -t streamable-http -u 'https://preflight-agent.netlify.app/mcp'
{
"mcpServers": {
"mr8-gif-preflight-safe-swap": {
"type": "http",
"url": "https://preflight-agent.netlify.app/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 12 Sept 26 −5
- Stability: 0.33 → fail ▼ security
- Tool “preflight_capabilities” was removed ▼ security
- Tool “preflight_safe_swap” was removed ▼ security
- The server changed its declared name: Preflight SafeSwap → preflight-financial-action-firewall security
- Schema quality: 95 → 115 ▼ functional
- MCP protocol: pass → fail ▼ functional
- Tool coverage: 83% → 100% ▲ functional
- MCP protocol version: 2026-07-28 → 2025-06-18 functional
- Server version: 1.0.0 → 3.0.0 functional
- New tool “preflight_transaction” functional
- 11 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.
- 9 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 6 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 4 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Sept 26 +1
- Stability: unverified → 0.03 ▲ functional
- 1 Sept 26 65
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Probed https://preflight-agent.netlify.app/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=*.netlify.app,O=Netlify\, Inc,L=San Francisco,ST=California,C=US | CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1,O=DigiCert Inc,C=US | 16 Feb 2026 | 19 Mar 2027 | ECDSA 256 | SHA256-RSA | cd5d0afb0611b5bd9d692535c0ca7c4 |
| SANs: *.netlify.app, netlify.app | ||||||
| CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1,O=DigiCert Inc,C=US (CA) | CN=DigiCert Global Root G2,OU=www.digicert.com,O=DigiCert Inc,C=US | 30 Mar 2021 | 29 Mar 2031 | RSA 2048 | SHA256-RSA | cf5bd062b5602f47ab8502c23ccf066 |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of preflight-agent.netlify.app. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| app. | present | 23684 | 8 | Verified |
| netlify.app. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains; preload |
| x-content-type-options | nosniff |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://preflight-agent.netlify.app/mcp | Verified | 200 | |
| http (plaintext) | http://preflight-agent.netlify.app/mcp | HTTPS enforced | 301 | https://preflight-agent.netlify.app/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
preflight_transaction ~115
Read-only Solana financial-action firewall. Compare an unsigned transaction's simulated effects with declared intent and principal policy. Returns PASS, FAIL, or REVIEW plus a signed verification receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| intent | object | yes | Declared action, assets, amountAtomic, recipient, and protocol intent. |
| policy | object | yes | Principal policy: allowedPrograms, allowedAccounts, maxSpendAtomic, maxFeeAtomic, and strictness. |
| unsignedTransaction | string | yes | Base64 legacy or v0 Solana transaction. Preflight never signs it. |
No output schema declared.
No examples provided.
What is the Preflight SafeSwap MCP server?
Preflight SafeSwap is an MCP server listed in the public MCP registry as io.github.mr8-gif/preflight-safe-swap. Safe Solana swaps for AI agents with risk checks, unsigned transactions, x402, and 3-bp fees. This page covers its hosted endpoint (https://preflight-agent.netlify.app/mcp).
Is the Preflight SafeSwap MCP server safe to use?
Preflight SafeSwap scores 65 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 Preflight SafeSwap MCP server expose?
Preflight SafeSwap exposes 1 tool: preflight_transaction. Their descriptions and schemas cost roughly 115 tokens of context every time the server is loaded.
Does the Preflight SafeSwap MCP server require authentication?
No. We connected to Preflight SafeSwap without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Preflight SafeSwap MCP server still maintained?
Preflight SafeSwap is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.