- CPM changes (auction dynamics, competition)
- CTR changes (creative effectiveness)
- Audience saturation (B2B pools are smaller)
- Seniority targeting shifts
- Industry performance shifts
- Company size targeting changes
- Campaign changes (paused, new, budget)
- B2B seasonal patterns (holidays, fiscal quarters)
- Creative fatigue (14-day threshold)
- Metric change summary (current vs previous)
- Severity assessment (CRITICAL, HIGH, MEDIUM, LOW)
- Contributing factors ranked by impact
- Historical context (30/60/90 day averages)
- Similar periods for comparison
- Actionable recommendations
- LinkedIn B2B-specific insights
- metric: Metric to analyze (required). Options: roas, ctr, cpc, cpm, conversions, conversion_rate, leads, engagement_rate, lead_form_completion_rate
- period_start: Start date (YYYY-MM-DD format, required)
- period_end: End date (YYYY-MM-DD format, required)
- comparison_period_start: Optional comparison start date
- comparison_period_end: Optional comparison end date
- ad_account_id: Required for multi-account users. Get from list_connected_accounts
- “Why did my LinkedIn ROAS drop last week?”
- “Explain the LinkedIn CTR decline in December”
- “My LinkedIn leads dropped 40%, what happened?”
- “Why did LinkedIn CPC increase?”
OpenAPI
/api-reference/openapi.json post /api/v1/tools/explain_linkedin_anomaly/execute
openapi: 3.1.0
info:
contact:
email: [email protected]
name: ADSMCP Support
description: >-
REST endpoints for every ADSMCP tool. Same surface as the MCP server, over
plain HTTP for consumers that can't speak SSE (n8n, Zapier, Make, curl, any
language's HTTP client).
## Envelope
Every request wraps tool-specific input in an `arguments` object:
```json
{ "arguments": { <tool-specific fields> } }
```
Every response wraps the result in either a success envelope (`success:
true`, `data: {...}`) or an error envelope (`success: false`, `error:
"..."`, `is_error: true`).
## Authentication
Pass your API key as `Authorization: Bearer sk_live_...` on every request.
Generate keys at https://adsmcp.si/dashboard/api-tokens.
## Quota & billing
Every successful billable call decrements your monthly tool-call allowance.
The current counter is attached to every 200 response under `data.quota`:
```json
"quota": { "used": 42, "limit": 150, "tier": "plus", "period_end":
"2026-05-01" }
```
When the limit is hit, the API returns HTTP 402 with a full `quota` block
including `upgrade_url`. Read-only diagnostic tools (`get_usage_status`,
`list_connected_accounts`, `get_connections_status`) are exempt and never
consume quota.
## Idempotency
Write operations accept an `Idempotency-Key: <uuid>` header. A repeated call
with the same key returns the cached result rather than executing twice.
**Strongly recommended for n8n, Zapier, and any retry-prone client** — it
prevents duplicate campaigns when networks misbehave. Generate a fresh UUID
per logical operation (not per retry).
## Multi-account users
Customers with multiple connected accounts on the same platform (e.g. an
agency with 10 Meta ad accounts) must specify which account to use via
`ad_account_id`, `customer_id`, `advertiser_id`, or `account_id` depending
on the platform. Omitting it returns HTTP 400 with a list of valid account
IDs. See `list_connected_accounts` to discover available IDs.
## HTTP status codes
- `200` — success (parse `data`)
- `400` — tool-level error (surface `error` to users)
- `401` — bad/missing API key
- `402` — ADSMCP quota exhausted
- `404` — unknown tool name
- `429` — upstream ad platform rate-limited us (Meta/Google/etc.) — retry
with backoff
- `500` — server error, report to support
## Streaming
This endpoint is plain request-response JSON. There is **no SSE, no chunked
streaming**. Safe to use from n8n Cloud's HTTP Request node, Zapier
Webhooks, Make HTTP module, curl, and every mainstream HTTP library.
title: ADSMCP REST API
version: 1.0.0
servers:
- description: Production
url: https://api.adsmcp.si
security: []
tags:
- description: Audit tools
name: audit
- description: General (Account Management) tools
name: general
- description: Google Ads tools
name: google-ads
- description: LinkedIn Ads tools
name: linkedin-ads
- description: Meta Ads tools
name: meta-ads
- description: Monitoring & Reporting tools
name: monitoring
- description: TikTok Ads tools
name: tiktok-ads
paths:
/api/v1/tools/explain_linkedin_anomaly/execute:
post:
tags:
- linkedin-ads
summary: Explain LinkedIn Anomaly
description: >-
User asks why their LinkedIn metrics changed,
wants to understand a performance drop/spike, or says something like
"My LinkedIn leads dropped 40%, why?"
Explains significant metric changes with contributing factors:
LinkedIn-Specific Factors Analyzed:
- CPM changes (auction dynamics, competition)
- CTR changes (creative effectiveness)
- Audience saturation (B2B pools are smaller)
- Seniority targeting shifts
- Industry performance shifts
- Company size targeting changes
- Campaign changes (paused, new, budget)
- B2B seasonal patterns (holidays, fiscal quarters)
- Creative fatigue (14-day threshold)
Returns:
- Metric change summary (current vs previous)
- Severity assessment (CRITICAL, HIGH, MEDIUM, LOW)
- Contributing factors ranked by impact
- Historical context (30/60/90 day averages)
- Similar periods for comparison
- Actionable recommendations
- LinkedIn B2B-specific insights
Parameters:
- metric: Metric to analyze (required). Options:
roas, ctr, cpc, cpm, conversions, conversion_rate,
leads, engagement_rate, lead_form_completion_rate
- period_start: Start date (YYYY-MM-DD format, required)
- period_end: End date (YYYY-MM-DD format, required)
- comparison_period_start: Optional comparison start date
- comparison_period_end: Optional comparison end date
- ad_account_id: Required for multi-account users. Get from
list_connected_accounts
Example Prompts:
- "Why did my LinkedIn ROAS drop last week?"
- "Explain the LinkedIn CTR decline in December"
- "My LinkedIn leads dropped 40%, what happened?"
- "Why did LinkedIn CPC increase?"
Execution time: 4-6 seconds
operationId: execute_explain_linkedin_anomaly
parameters:
- description: >-
Client-generated UUID to make writes idempotent. Strongly
recommended for write tools. A repeat call with the same key returns
the cached result instead of re-executing. Example:
550e8400-e29b-41d4-a716-446655440000
example: 550e8400-e29b-41d4-a716-446655440000
in: header
name: Idempotency-Key
required: false
schema:
format: uuid
type: string
requestBody:
content:
application/json:
example:
arguments:
ad_account_id: string
comparison_period_end: string
comparison_period_start: string
metric: ctr
period_end: string
period_start: string
schema:
properties:
arguments:
description: Input schema for explaining LinkedIn metric anomalies
properties:
ad_account_id:
anyOf:
- type: string
- type: 'null'
default: null
description: >-
LinkedIn Ad Account ID. Required for multi-account
users. Get from list_connected_accounts.
title: Ad Account Id
comparison_period_end:
anyOf:
- type: string
- type: 'null'
default: null
description: >-
Optional end date of comparison period. Defaults to day
before period_start.
title: Comparison Period End
comparison_period_start:
anyOf:
- type: string
- type: 'null'
default: null
description: >-
Optional start date of comparison period. Defaults to
same-length period immediately before analysis period.
title: Comparison Period Start
metric:
default: ctr
description: >-
Metric to analyze. Options: roas, ctr, cpc, cpm,
conversions, conversion_rate, leads, engagement_rate,
lead_form_completion_rate. Default: 'ctr'
title: Metric
type: string
period_end:
anyOf:
- type: string
- type: 'null'
default: null
description: >-
End date of analysis period (YYYY-MM-DD format).
Defaults to yesterday.
title: Period End
period_start:
anyOf:
- type: string
- type: 'null'
default: null
description: >-
Start date of analysis period (YYYY-MM-DD format).
Defaults to 7 days ago.
title: Period Start
raw_data:
default: false
description: >-
If true, return ONLY raw metrics as a JSON code block
(no severity labels, suggested bids/budgets, industry
benchmarks, or optimization recommendations). Use when
you run your own attribution model or want to minimize
token usage.
title: Raw Data
type: boolean
type: object
required:
- arguments
type: object
description: >-
All tool arguments are wrapped in an `arguments` object. The fields
accepted inside `arguments` are listed below — required fields are
marked with a red asterisk.
required: true
responses:
'200':
content:
application/json:
example:
data:
quota:
limit: 150
period_end: '2026-05-01'
tier: plus
used: 42
text: (tool-specific textual output for explain_linkedin_anomaly)
success: true
tool: explain_linkedin_anomaly
schema:
$ref: '#/components/schemas/SuccessResponse'
description: >-
Tool executed successfully. `data.text` carries the human-readable
result (markdown-friendly). `data.quota` shows your current usage
against the plan limit. `data.structured` appears when the tool
emits machine-parseable structured content. `data.content` appears
for tools that return non-text blocks (images, resources).
'400':
content:
application/json:
example:
error: >-
You have 25 meta_ads accounts connected. Please specify which
account to use by passing the ad_account_id parameter:
- Acme Holdings (ad_account_id="act_123456789")
- Acme EU (ad_account_id="act_987654321")
is_error: true
success: false
tool: explain_linkedin_anomaly
schema:
$ref: '#/components/schemas/ErrorResponse'
description: >-
Tool-level error. The `error` string is safe to surface to end
users. Common causes: missing required argument, multi-account user
didn't specify which account, upstream platform validation failure.
'401':
content:
application/json:
example:
error: >-
Not authenticated. Please connect your ADSMCP account first
at https://adsmcp.si
is_error: true
success: false
tool: explain_linkedin_anomaly
schema:
$ref: '#/components/schemas/ErrorResponse'
description: Invalid, expired, or revoked API key.
'402':
content:
application/json:
example:
error: |-
🚨 Monthly limit reached (150/150 tool calls on Plus tier).
Upgrade to Pro at https://adsmcp.si to keep building.
is_error: true
quota:
limit: 150
period_end: '2026-05-01'
tier: plus
upgrade_url: https://adsmcp.si
used: 150
success: false
tool: explain_linkedin_anomaly
schema:
$ref: '#/components/schemas/QuotaErrorResponse'
description: >-
Quota exhausted for the current billing period. The response
includes a `quota` block with the current used/limit/tier values and
an `upgrade_url` to move up a tier.
'404':
content:
application/json:
example:
error: 'Tool not found: explain_linkedin_anomaly'
is_error: true
success: false
tool: explain_linkedin_anomaly
schema:
$ref: '#/components/schemas/ErrorResponse'
description: Unknown tool_name. Check /openapi.json for the full catalog.
'429':
content:
application/json:
example:
error: >-
Upstream platform rate limit hit (Meta Business Use Case
throttle at 95%). Retry after 60 seconds.
is_error: true
success: false
tool: explain_linkedin_anomaly
schema:
$ref: '#/components/schemas/ErrorResponse'
description: >-
Rate-limited by the upstream ad platform (Meta, Google, LinkedIn,
TikTok). Retry with exponential backoff. Not the same as ADSMCP's
own quota — that returns 402.
'500':
content:
application/json:
example:
error: 'Internal error: RuntimeError'
is_error: true
success: false
tool: explain_linkedin_anomaly
schema:
$ref: '#/components/schemas/ErrorResponse'
description: >-
Unexpected server error. Report to [email protected] with
request_id.
security:
- ApiKeyAuth: []
components:
schemas:
SuccessResponse:
description: >-
Returned on HTTP 200. `data.text` is the primary human-readable output.
`data.quota` is always present for billable calls. `data.structured` is
set only when the tool emits machine-parseable structured content.
`data.content` is set only when the tool emits non-text content blocks.
properties:
data:
properties:
content:
description: Non-text content blocks (images, resources).
items:
$ref: '#/components/schemas/ContentBlock'
type: array
quota:
$ref: '#/components/schemas/QuotaBlock'
structured:
additionalProperties: true
description: >-
Machine-parseable structured content when the tool provides it
(e.g. account selection prompts, widget payloads).
type: object
text:
description: >-
Human-readable output. Markdown-friendly for tools that emit
formatted lists, tables, or recommendations.
type: string
required:
- text
type: object
success:
const: true
type: boolean
tool:
description: Echoed tool_name from the request URL.
type: string
required:
- success
- data
- tool
type: object
ErrorResponse:
description: >-
Returned on HTTP 4xx / 5xx (except 402 which uses `QuotaErrorResponse`).
`error` is always a human-readable string safe to surface to end users.
properties:
error:
description: Human-readable error message.
type: string
is_error:
const: true
type: boolean
structured_content:
additionalProperties: true
description: >-
Present when the underlying tool attached structured metadata to the
error (e.g. account-selection lists).
type: object
success:
const: false
type: boolean
tool:
type: string
required:
- success
- error
- tool
type: object
QuotaErrorResponse:
description: >-
Returned on HTTP 402 when the monthly quota is exhausted. Identical to
`ErrorResponse` but with an additional `quota` block.
properties:
error:
type: string
is_error:
const: true
type: boolean
quota:
$ref: '#/components/schemas/QuotaBlock'
success:
const: false
type: boolean
tool:
type: string
required:
- success
- error
- tool
- quota
type: object
ContentBlock:
additionalProperties: true
description: >-
A non-text content block. Rare today; tools that attach images,
resources, or widget payloads populate `data.content` with blocks of
this shape.
properties:
type:
example: image
type: string
required:
- type
type: object
QuotaBlock:
description: >-
Current quota state for the API key owner. Attached to every successful
billable response under `data.quota`, and to 402 errors under `quota`
(plus `upgrade_url`).
properties:
limit:
description: Tool call allowance for the current tier.
example: 150
type: integer
period_end:
description: When the monthly counter resets (ISO date).
example: '2026-05-01'
format: date
type: string
tier:
description: Subscription tier of the account that owns the API key.
enum:
- free
- plus
- pro
- max
example: plus
type: string
upgrade_url:
description: Upgrade link (present only on 402 quota errors).
format: uri
type: string
used:
description: Tool calls consumed this billing period.
example: 42
type: integer
required:
- used
- limit
- tier
- period_end
type: object
securitySchemes:
ApiKeyAuth:
bearerFormat: API Key (sk_live_...)
description: >-
API key from https://adsmcp.si/dashboard/api-tokens. Prefix `sk_live_`. Treat as a
secret — never commit.
scheme: bearer
type: http