# ForgeMesh, pay as you go, x402, POST /v1/keyword-opportunity: Related keywords API

> Generate and prioritize long-tail keyword opportunities without fabricated volume metrics

ForgeMesh's x402 plan lets you call the related keywords API. ForgeMesh's docs list none of the 6 fields on our checklist: Search volume, Monthly trend, Cost per click, Competition and 2 more.
We haven't run ForgeMesh through [our related keywords API benchmark](https://datacircle.dev/best-related-keywords-api.txt) yet.
We rank 226 plans for related keywords APIs by price. Half the plans cost $0.596 per 1,000 keywords or less.
[Keys.so's ₽34,900 (about $417) monthly plan](https://datacircle.dev/related-keywords-apis/keys-so/34900-monthly/llms.txt) is the cheapest paid plan per 1,000 keywords. Keys.so's ₽34,900 (about $417) monthly plan charges nothing per call. You get as many keywords as Keys.so's rate limit allows.
[seodata.dev's $4.99 monthly plan](https://datacircle.dev/related-keywords-apis/seodata-dev/4-99-monthly/llms.txt) covers any number of keywords. seodata.dev's $4.99 monthly plan costs less up front than Keys.so's ₽34,900 (about $417) monthly plan.
[Bing Webmaster Tools](https://datacircle.dev/related-keywords-apis/bing-webmaster-tools/free/llms.txt), [DataForSEO](https://datacircle.dev/related-keywords-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-dataforseo-labs-google-keyword-ideas-live/llms.txt) and [Mangools](https://datacircle.dev/related-keywords-apis/mangools/15-monthly/llms.txt) are the best related keywords API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/related-keywords-apis/forgemesh/pay-as-you-go-x402-post-v1-keyword-opportunity
- [Related keywords API: the 9 best providers compared](https://datacircle.dev/best-related-keywords-api.txt)
- Get it: https://seo.forgemesh.io/menu?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Request: `POST https://seo.forgemesh.io/v1/keyword-opportunity`
- API key: not needed
- Its API docs: https://seo.forgemesh.io/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Sold by: ForgeMesh (https://forgemesh.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 0%

## Price

- Per: page, size not stated
- Billing: pay as you go

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Generate and prioritize long-tail keyword opportunities without fabricated volume metrics

## Data

- Keep data: no limit
- Use data: Do not use the Services to scan, probe or act on systems you do not own or have permission to test, to violate any law or third-party right, to send spam, to circumvent rate limits or payment, or to attack, overload or reverse-engineer our infrastructure.

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: nothing required. Optional: seed, audience, domain_authority_score
- Method: POST
- Path: /v1/keyword-opportunity

## About the plan

- Plan: x402
- Who can get it: anyone with USDC on Base (no account or API key)

## The only field the plan's answer can hold

keyword

## ForgeMesh's plans (1)

- [ForgeMesh, pay as you go, x402, POST /v1/keyword-opportunity](https://datacircle.dev/related-keywords-apis/forgemesh/pay-as-you-go-x402-post-v1-keyword-opportunity/llms.txt): 0% complete

## ForgeMesh's calls for this API (2)

- `GET /v1/query-expand`: [ForgeMesh, pay as you go, x402, GET /v1/query-expand](https://datacircle.dev/related-keywords-apis/forgemesh/pay-as-you-go-x402-get-v1-query-expand/llms.txt)
- `POST /v1/keyword-opportunity`: [ForgeMesh, pay as you go, x402, POST /v1/keyword-opportunity](https://datacircle.dev/related-keywords-apis/forgemesh/pay-as-you-go-x402-post-v1-keyword-opportunity/llms.txt)

## ForgeMesh's APIs (2)

- [ForgeMesh: domain authority API pricing, 1 plan, POST /v1/authority-compare](https://datacircle.dev/domain-authority-apis/forgemesh/pay-as-you-go-x402-post-v1-authority-compare/llms.txt)
- [ForgeMesh: domain authority API pricing, 1 plan, GET /v1/domain-authority](https://datacircle.dev/domain-authority-apis/forgemesh/pay-as-you-go-x402-get-v1-domain-authority/llms.txt)
- [ForgeMesh: related keywords API pricing, 1 plan, POST /v1/keyword-opportunity](https://datacircle.dev/related-keywords-apis/forgemesh/pay-as-you-go-x402-post-v1-keyword-opportunity/llms.txt)

## ForgeMesh: related keywords API alternatives

- [AnyAPI, pay as you go, Pay per call with x402 and MPP, POST /v1/run/ahrefs.keyword_ideas](https://datacircle.dev/related-keywords-apis/anyapi/pay-as-you-go-pay-per-call-with-x402-and-mpp-post-v1-run-ahrefs-keyword-ideas/llms.txt): 33% complete, stored

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-07.

- https://forgemesh.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://seo.forgemesh.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://seo.forgemesh.io/.well-known/agent-card.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://seo.forgemesh.io/.well-known/crawler-profile.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://seo.forgemesh.io/.well-known/x402.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://seo.forgemesh.io/capabilities?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://seo.forgemesh.io/menu?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://seo.forgemesh.io/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing