PlainRouter
REMOTE · PLAINROUTER.COM · 2 COMPONENTS · SCANNED SEP 20
Inspect an approved ad account and first-party signal health, then propose policy-gated actions.
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 Security94
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
- 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
- The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability86
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 1143 tokens (~95/item across 12 items; 10 tools + 2 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management50
- Stability check failed: schema churn in the 25 days we've observed: 4 tool removals, 0 breaking changes, 0 auth/transport breaks, 2 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 Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "revoke_grant" implies "revoke" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 12 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
- Supports UI / widget rendering.Pass
How do I install the PlainRouter MCP server?
PlainRouter is a hosted endpoint at https://plainrouter.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.
remote · plainrouter.com
claude mcp add --transport http com-plainrouter-mcp 'https://plainrouter.com/mcp'
{
"mcpServers": {
"com-plainrouter-mcp": {
"url": "https://plainrouter.com/mcp"
}
}
} {
"servers": {
"com-plainrouter-mcp": {
"type": "http",
"url": "https://plainrouter.com/mcp"
}
}
} [mcp_servers.com-plainrouter-mcp] url = "https://plainrouter.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-plainrouter-mcp": {
"type": "remote",
"url": "https://plainrouter.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-plainrouter-mcp --url 'https://plainrouter.com/mcp' --transport streamable-http
mcp_servers:
com-plainrouter-mcp:
url: "https://plainrouter.com/mcp" {
"McpServers": {
"com-plainrouter-mcp": {
"Transport": "http",
"Url": "https://plainrouter.com/mcp"
}
}
} assistant mcp add com-plainrouter-mcp -t streamable-http -u 'https://plainrouter.com/mcp'
{
"mcpServers": {
"com-plainrouter-mcp": {
"type": "http",
"url": "https://plainrouter.com/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.
- 20 Sept 26 +1
- Schema quality: 82 → 95 ▼ functional
- “get-creative-library” added an optional parameter “account_id” cosmetic
- “upload-asset” added an optional parameter “account_id” cosmetic
- “propose-actions” added an optional parameter “account_id” cosmetic
- “get_signal_health” added an optional parameter “account_id” cosmetic
- “get_performance” added an optional parameter “account_id” cosmetic
- “get_account_state” added an optional parameter “account_id” cosmetic
- “duplicate-ad-with-creative” added an optional parameter “account_id” cosmetic
- 18 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 40 to 43.
- 17 Sept 26 0
- MCP protocol: Implements a current MCP spec version (2026-07-28). functional
- MCP protocol version: 2025-11-25 → 2026-07-28 functional
- Server version: 0.3.2 → 0.4.0 functional
- 16 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 33 to 37.
- 14 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 27 to 30.
- 13 Sept 26 0
- Tool “get_performance” rewrote its description, which is the text the model reads security
- 12 Sept 26 +1
- The server rewrote its instructions, which are the text every model session reads security
- The server changed its declared name: PlainRouter → Plainrouter security
- Tool “propose-actions” rewrote its description, which is the text the model reads security
- Tool “get_signal_health” rewrote its description, which is the text the model reads security
- 11 Sept 26 −1
- Destructive annotations: pass → 0 functional
- New tool “revoke_grant” functional
- “get_signal_health” added an optional parameter “days” cosmetic
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://plainrouter.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=plainrouter.com | CN=WE1,O=Google Trust Services,C=US | 7 Aug 2026 | 5 Nov 2026 | ECDSA 256 | ECDSA-SHA256 | 4c0da8387d1b076c0e3177aac71f9ca4 |
| SANs: plainrouter.com, *.plainrouter.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of plainrouter.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| plainrouter.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Enforced and verified
The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.
| Result | Enforced and verified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 200 |
WWW-Authenticate challenge Bearer realm="mcp", resource_metadata="https://plainrouter.com/.well-known/oauth-protected-resource/mcp"
Bearer realm="mcp", resource_metadata="https://plainrouter.com/.well-known/oauth-protected-resource/mcp"| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
Protected resource metadata
| Document | https://plainrouter.com/.well-known/oauth-protected-resource/mcp |
|---|---|
| Retrieved | Yes |
| Resource | https://plainrouter.com/mcp |
| Authorisation server | https://plainrouter.com |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://plainrouter.com/mcp | Verified | 200 | |
| http (plaintext) | http://plainrouter.com/mcp | HTTPS enforced | 301 | https://plainrouter.com/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 →
duplicate-ad-with-creative Duplicate Ad With Creative ~142
Submit a canonical proposal to duplicate a source Meta ad with a different creative asset. Approved copies are always created PAUSED.
| Name | Type | Req | Description |
|---|---|---|---|
| account_id | integer | – | Advertising account ID. Required when the workspace has more than one active account. |
| asset_id | string | yes | Asset ID returned by upload-asset or get-creative-library. |
| idempotency_key | string | yes | Stable key reused when retrying this duplicate proposal. |
| name_suffix | string | – | Optional suffix for the copied ad name. |
| rationale | string | yes | Why this new creative variant should be created. |
| source_ad | string | yes | Numeric Meta ID of the ad to duplicate. |
No output schema declared.
No examples provided.
get_account_state Get Account State ~51
Return the authorized advertising account, workspace, connection, Signal destination, and currently available read-only capabilities.
| Name | Type | Req | Description |
|---|---|---|---|
| account_id | integer | – | Advertising account ID. Required when the workspace has more than one active account. |
No output schema declared.
No examples provided.
get_performance Get Performance ~79
Admissible proposal evidence comparing Meta-reported conversions with gateway-verified accepted conversions, plus the latest stored daily Meta spend and delivery metrics.
| Name | Type | Req | Description |
|---|---|---|---|
| account_id | integer | – | Advertising account ID. Required when the workspace has more than one active account. |
| days | integer | – | Number of reporting days to compare, from 1 to 90. |
No output schema declared.
No examples provided.
get_signal_health Get Signal Health ~96
Diagnostic view of first-party event flow, Meta delivery outcomes, match quality, and reconciliation gaps from Plainrouter stored measurements. Not admissible evidence for spend-affecting proposals. Does not call the Marketing API.
| Name | Type | Req | Description |
|---|---|---|---|
| account_id | integer | – | Advertising account ID. Required when the workspace has more than one active account. |
| days | integer | – | Trailing window in days. One of 7, 30, 90. |
No output schema declared.
No examples provided.
get-creative-library Get Creative Library ~101
Return Meta image and video assets with the ads and last-30-day performance historically associated with each asset.
| Name | Type | Req | Description |
|---|---|---|---|
| account_id | integer | – | Advertising account ID. Required when the workspace has more than one active account. |
| asset_type | string | – | Limit results to images or videos. Defaults to all. |
| cursor | string | – | Opaque Meta cursor returned by a previous call. |
| limit | integer | – | Maximum assets returned per requested asset type. |
No output schema declared.
No examples provided.
propose-actions Propose Actions ~189
Propose a batch of budget, status, upload, or creative-duplication actions for the approved ad account. Budget and status proposals are recommendations only; their execution is disabled in this release. Supported JPEG/PNG uploads and paused ad copies require human approval and workspace policy checks. Suggest-only approval never executes them.
| Name | Type | Req | Description |
|---|---|---|---|
| account_id | integer | – | Advertising account ID. Required when the workspace has more than one active account. |
| actions | array | yes | One to twenty-five typed action objects. |
| evidence | array | yes | One to three approved server-re-read evidence citations; action-bound sources require action_index. |
| idempotency_key | string | yes | Stable key reused when retrying the same proposal. |
| rationale | string | yes | Why this batch should be considered together. |
| target_source | string | yes | How the target was selected. Human-supplied establishes selection only, never current target state. |
No output schema declared.
No examples provided.
revoke_grant Revoke Grant ~56
Revoke an active workspace grant. The caller must hold the revoke_grant scope in the same workspace or be the human delegator of the granted agent.
| Name | Type | Req | Description |
|---|---|---|---|
| grant_id | string | yes | The ULID of the grant to revoke. |
No output schema declared.
No examples provided.
show_spend_cap_approval Show Spend Cap Approval ~26
Render the static spend-cap approval preview card. Reads and writes nothing.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
upload-asset Upload Asset ~184
Stage a JPEG/PNG image and submit a canonical upload action through the policy and approval gate.
| Name | Type | Req | Description |
|---|---|---|---|
| account_id | integer | – | Advertising account ID. Required when the workspace has more than one active account. |
| asset_type | string | yes | The creative asset type. M2 supports images only. |
| content_base64 | string | – | Raw base64 content for image uploads. Do not use a data URI prefix. |
| filename | string | yes | Bare filename with a matching .jpg, .jpeg, or .png extension, such as spring-hero.jpg. Path separators are rejected: send a name, not a path. The asset is never written to a filesystem path built fro… |
| idempotency_key | string | yes | Stable key reused when retrying this upload proposal. |
| rationale | string | yes | Why this asset should be added to the creative library. |
No output schema declared.
No examples provided.
verify_signal_ingestion Verify Signal Ingestion ~51
Verify server-side Signal ingestion by writing one idempotent, identity-free modeled event for the authorized workspace. This confirms ledger receipt but does not count as real arrival evidence or complete onboarding. No spend capability.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
What is the PlainRouter MCP server?
PlainRouter is an MCP server listed in the public MCP registry as com.plainrouter/mcp. Inspect an approved ad account and first-party signal health, then propose policy-gated actions. This page covers its hosted endpoint (https://plainrouter.com/mcp).
Is the PlainRouter MCP server safe to use?
PlainRouter scores 87 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 PlainRouter MCP server expose?
PlainRouter exposes 10 tools: get_account_state, get_signal_health, get_performance, verify_signal_ingestion, propose-actions, and 5 more. Their descriptions and schemas cost roughly 975 tokens of context every time the server is loaded.
Does the PlainRouter MCP server require authentication?
Yes. PlainRouter asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the PlainRouter MCP server still maintained?
PlainRouter 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.