Operated by Sourcelane✓ verified
Compare the followers of 2-5 X (Twitter) accounts - shared follower counts, overlap percentages, and enriched profiles of the common audience.
A tool that compares follower bases of multiple X (Twitter) accounts to quantify audience overlap and produce enriched profile data for shared followers. It performs pairwise set comparisons of follower lists (using a configurable sample of recent followers), returning per-pair overlap metrics such as shared follower counts, asymmetric overlap percentages, and a symmetric Jaccard similarity score, along with true follower totals, how many followers were analyzed per account, and a partial-analysis flag when sampling caps are reached. Optionally it enriches each shared follower with profile metadata—display name and username, verification status, bio and location, follower/following counts, total posts, account creation date, profile image and profile URL—yielding structured records for overlap summaries and enriched shared-profile entries.
Verified Sep 28, 3:56 AM
$0.50
per report
Up to 2 per call. Only pay for results returned; failed calls are refunded.
Influencer vetting
Check how much an influencer's audience overlaps yours before paying for a collab; low overlap = more new reach
Competitor analysis
Measure how much audience you share with rivals and who those shared followers are
Partnership scouting
Find accounts whose audiences complement (not duplicate) yours
Ad targeting research
Identify the engaged accounts that follow multiple players in your niche
M&A / creator due diligence
Verify claimed audience uniqueness with real data
2 to 5 X usernames or profile URLs.
Optional settings
| Window | Uptime | Success rate | p50 | p95 | Calls |
|---|---|---|---|---|---|
| 24h | — | — | — | — | 0 |
| 7d | — | — | — | — | 0 |
| 30d | — | — | — | — | 0 |
Call it through Sourcelane's gateway or MCP server. We run the connector, apply your agent's spend guardrails, and bill only the results returned.
Call it via Sourcelane
curl -X POST https://api.usesourcelane.com/v1/call \
-H "Authorization: Bearer sl_live_your_agent_key" \
-H "Content-Type: application/json" \
-d '{"listing":"x-audience-overlap-analyzer","params":{"usernames":["nasa","spacex"]},"maxResults":10}'Request params
| Field | Type | Required | Description |
|---|---|---|---|
usernames | array | required | 2 to 5 X (Twitter) usernames (with or without @) or profile URLs. Every pair is compared. |
maxFollowersPerAccount | integer | optional | How many of each account's most recent followers to analyze. Set 0 for the maximum (up to 250,000 most recent followers per account). |
sampleSharedProfiles | integer | optional | For each pair, fetch full profile details for up to this many shared followers. Set 0 to output only the overlap summary. |
Each result contains
| Field | Type | Description |
|---|---|---|
recordType | string | Record Type |
accountA | string | Account A |
accountB | string | Account B |
accountAFollowerTotal | integer | Account AFollower Total |
accountBFollowerTotal | integer | Account BFollower Total |
accountAFollowersAnalyzed | integer | Account AFollowers Analyzed |
accountBFollowersAnalyzed | integer | Account BFollowers Analyzed |
sharedFollowerCount | integer | Shared Follower Count |
overlapPctOfA | number | Overlap Pct Of A |
overlapPctOfB | number | Overlap Pct Of B |
jaccardPct | number | Jaccard Pct |
analysisIsPartial | boolean | Analysis Is Partial |
checkedAt | string | — |
Pick your tool and connect in under a minute. Then just ask — for example: “Find the 50 most-liked tweets about 'MCP servers' this month and summarise the takes.”
Connect Claude
Web, desktop and mobile. One click, then confirm.
Adds the Sourcelane MCP server with your key as a header.
claude mcp add --transport http sourcelane https://api.usesourcelane.com/mcp \
--header "Authorization: Bearer sl_live_your_agent_key"Alternative to the connector URL: add to claude_desktop_config.json, then restart Claude.
{
"mcpServers": {
"sourcelane": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://api.usesourcelane.com/mcp",
"--header",
"Authorization:${AUTH_HEADER}"
],
"env": {
"AUTH_HEADER": "Bearer sl_live_your_agent_key"
}
}
}
}Add to ~/.cursor/mcp.json (or Windsurf's mcp_config.json).
{
"mcpServers": {
"sourcelane": {
"url": "https://api.usesourcelane.com/mcp",
"headers": {
"Authorization": "Bearer sl_live_your_agent_key"
}
}
}
}Save as .vscode/mcp.json. VS Code prompts for your key once.
{
"servers": {
"sourcelane": {
"type": "http",
"url": "https://api.usesourcelane.com/mcp",
"headers": {
"Authorization": "Bearer ${input:sourcelane-key}"
}
}
},
"inputs": [
{
"type": "promptString",
"id": "sourcelane-key",
"description": "Sourcelane agent key",
"password": true
}
]
}Create a GPT → Actions → Import from URL, then Authentication: API Key, Bearer.
https://usesourcelane.com/openapi.jsonOne POST. Pass maxResults to cap cost.
curl -X POST https://api.usesourcelane.com/v1/call \
-H "Authorization: Bearer sl_live_your_agent_key" \
-H "Content-Type: application/json" \
-d '{"listing":"x-audience-overlap-analyzer","params":{"usernames":["nasa","spacex"]},"maxResults":10}'Wrap the REST call as a tool, or point an MCP client at the endpoint.
import requests
res = requests.post(
"https://api.usesourcelane.com/v1/call",
headers={"Authorization": "Bearer sl_live_your_agent_key"},
json={
"listing": "x-audience-overlap-analyzer",
"params": {"usernames":["nasa","spacex"]},
"maxResults": 10,
},
timeout=300,
)
body = res.json()
print(body["receipt"]["chargedMicros"], "micro-USD for", body["receipt"]["results"], "results")
print(body["data"])—
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