MPP Payments

The Influship API supports the Machine Payments Protocol (MPP) on its paid public data endpoints. AI agents can pay per-request via Stripe cards (Shared Payment Tokens) or USDC on Tempo, no API key required.

Before you start	Details
Auth	Protocol payment proof; no API key
Resource	The supported endpoints listed below
Cost	Requested limits determine the quote; settlement is nonrefundable
Limits	Read the quote and cap before authorizing payment

MPP and x402 are available on the same supported endpoints. Choose the protocol your client supports.

How it works

Your agent makes a request to a supported paid endpoint without an X-API-Key header.
The API responds with 402 Payment Required and a WWW-Authenticate: Payment ... header advertising the supported MPP methods.
Your agent attaches an Authorization: Payment <credential> header proving payment authorization (signed by the user’s wallet or backed by a Stripe SPT).
The API verifies, runs the request, and returns the response with a Payment-Receipt header.

The same 402 response includes both MPP and x402 challenges, so the client can pick. MPP settles before the endpoint runs. Once settlement succeeds, the payment is final and the response keeps its Payment-Receipt even if the endpoint later returns an error.

Pricing

MPP prices match x402 pricing — same 20% surcharge over the credit-based pricing. The total is rounded up once to whole cents, with a $0.01 minimum. Stripe card payments are offered only when that quote is at least $0.50; lower-priced requests use USDC or account credits. The API does not increase a quote to meet the card minimum.

Endpoint	Price
`POST /v1/search`	$0.3000 + $0.0240 × requested_limit, rounded up to the next whole cent with a $0.01 minimum (capped at 100 results)
`GET /v1/creators/:id`	$0.0100
`POST /v1/creators/lookalike`	$0.0180 × requested_limit, rounded up to the next whole cent with a $0.01 minimum (capped at 100 results)
`POST /v1/creators/match`	$0.0120 × creators_in_request, rounded up to the next whole cent with a $0.01 minimum
`GET /v1/raw/instagram/post/:shortcode`	$0.0200
`GET /v1/raw/instagram/transcript/:shortcode`	$0.0600
`GET /v1/raw/tiktok/profile/{username}`	$0.0100
`GET /v1/raw/tiktok/profile/{username}/videos`	$0.0100
`GET /v1/raw/tiktok/video`	$0.0100
`GET /v1/raw/tiktok/video/comments`	$0.0100
`GET /v1/raw/tiktok/video/comment/replies`	$0.0100
`GET /v1/raw/tiktok/music`	$0.0100
`GET /v1/raw/tiktok/video/captions`	$0.0100
`GET /v1/raw/tiktok/video/transcript`	$0.0300
`GET /v1/raw/youtube/channel/{handle}`	$0.0100
`GET /v1/raw/youtube/transcript/{video_id}`	$0.0100
`GET /v1/raw/youtube/channel-transcripts/{handle}`	$0.0060 × requested video_limit, rounded up to the next whole cent
`GET /v1/raw/youtube/search`	$0.0100 per fetched page
`GET /v1/raw/youtube/video/{video_id}`	$0.0100
`GET /v1/raw/youtube/typeahead`	$0.0100
`GET /v1/raw/*`	starts at $0.0100 unless the endpoint cost is higher

The quote is based on your requested limit or batch size and stays the same if fewer results are returned.

Supported rails

Rail	Method	Settlement
Stripe card	`stripe/charge`	Stripe SPT (Shared Payment Token), USD via card or Link
USDC on Tempo	`tempo/charge`	On-chain USDC, settled in seconds

Eligible methods are advertised in the WWW-Authenticate header. Your client picks from that request’s offers. For variable-price operations, larger batches can qualify for cards even when smaller requests do not.

Quickstart

Use any MPP-compatible client. The reference SDK is mppx by wevm:

import { Mppx, tempo } from 'mppx/client';
import { privateKeyToAccount } from 'viem/accounts';

const account = privateKeyToAccount(process.env.TEMPO_PRIVATE_KEY as `0x${string}`);

const mppx = Mppx.create({
  methods: [tempo({ account })],
});

const response = await mppx.fetch('https://api.influship.com/v1/search', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ query: 'fitness creators in NYC', limit: 25 }),
});

const data = await response.json();

Or use AgentCash for a turnkey CLI wallet that speaks both x402 and MPP:

npx agentcash@latest discover https://api.influship.com

Discovery

Influship endpoints are listed in the MPP services directory. Search for “Influship” or “influencer search” to find them programmatically.

Pick your protocol

If your agent supports…	Use
Both x402 and MPP	Either — pick based on rail availability
Only MPP	MPP (this guide)
Only x402	x402 guide
Neither (only API keys)	Get an API key for lower per-request cost and per-tier rate limits

Need higher rate limits or volume pricing?

Get an API key — same endpoints, lower per-request cost, no x402/MPP surcharge.

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How it works

Pricing

Supported rails

Quickstart

Discovery

Pick your protocol

Need higher rate limits or volume pricing?

​How it works

​Pricing

​Supported rails

​Quickstart

​Discovery

​Pick your protocol

​Need higher rate limits or volume pricing?

How it works

Pricing

Supported rails

Quickstart

Discovery

Pick your protocol

Need higher rate limits or volume pricing?