Pay-per-call PPC keyword research via SpyFu data, settled on Tempo L2.
What it does
This MPP endpoint exposes SpyFu's PPC (pay-per-click) keyword research API (v2) through the Tempo payment protocol. Each call is individually charged via a 402 Payment Required challenge using the "tempo" method on chain 4217 (Tempo L2), with the provider covering gas fees (feePayer: true). The endpoint path pattern `/apis/keyword_api/v2/ppc/*` suggests it proxies SpyFu's existing Keyword API v2 for PPC-related queries — likely including metrics such as cost-per-click, ad spend estimates, competitor ad data, and keyword volume for paid search campaigns.
SpyFu is a well-known competitive intelligence platform offering 18+ years of historical SEO and PPC data. Through this MPP gateway, AI agents or automated workflows can purchase individual API calls without a traditional subscription. The price per request is 20,000 base units of the settlement token on Tempo L2 (likely pathUSD with 6 decimals, which would be $0.02 per call, though the exact token cannot be confirmed from the probe alone — see warnings).
No OpenAPI schema, documentation pages, or usage examples were found at the MPP gateway origin. The endpoint itself is live and correctly returns a 402 challenge, but callers will need to consult SpyFu's own API documentation for request parameters and response formats. The wildcard path suggests multiple sub-routes are available under the PPC keyword namespace.
Capabilities
Use cases
- —Querying PPC keyword metrics (CPC, volume, competition) for campaign planning
- —Analyzing competitor paid search keywords and ad spend
- —Automating keyword research pipelines for SEM agencies
- —Enriching marketing dashboards with historical PPC data
- —Agent-driven ad strategy optimization using real-time keyword intelligence
Fit
Best for
- —AI agents needing on-demand PPC keyword data without a SpyFu subscription
- —Automated SEM workflows that pay per API call
- —Developers building competitive intelligence tools with pay-as-you-go pricing
Not for
- —Organic SEO keyword research (this endpoint is PPC-specific)
- —Users needing bulk data exports at flat-rate pricing
- —Applications requiring detailed API documentation at the gateway itself
Quick start
curl -i https://spyfu.mpp.tempo.xyz/apis/keyword_api/v2/ppc/your-keyword-here
# Returns 402 with WWW-Authenticate: Payment header.
# Parse the challenge, sign a Tempo L2 payment, and resend with Authorization header.Endpoint
Quality
The endpoint is live and returns a valid 402 MPP challenge, confirming it is operational. However, no documentation, OpenAPI schema, or example responses are available at the gateway. The exact settlement token and response format must be inferred from external SpyFu docs. This is effectively a stub listing.
Warnings
- —No API documentation or OpenAPI schema found at the MPP gateway origin — all crawled pages return 404.
- —The settlement currency address (0x20c000000000000000000000b9537d11c60e8b50) could not be confirmed as pathUSD; the $0.02 per-call price assumes 6 decimals but may be inaccurate.
- —Callers must refer to SpyFu's official API docs (spyfu.com) for request parameters and response schemas, which are not mirrored here.
- —No examples of successful (200) responses are available.
Citations
- —SpyFu offers competitor keyword research with 18+ years of historical datahttps://spyfu.mpp.tempo.xyz
- —Endpoint returns a valid 402 MPP challenge with method=tempo, intent=charge, chainId=4217https://spyfu.mpp.tempo.xyz/apis/keyword_api/v2/ppc/*
- —Amount is 20000 base units with feePayer=truehttps://spyfu.mpp.tempo.xyz/apis/keyword_api/v2/ppc/*