MPPtempoquality 0.65

Perplexity Sonar chat with real-time web grounding, pay-per-call via Locus MPP on Tempo L2.

Price
per_call
Protocol
mpp
Verified
no
Endpoint
https://perplexity.mpp.paywithlocus.com/perplexity/chat

What it does

This endpoint exposes Perplexity's Sonar chat models through the Locus MPP (Micropayment Protocol), settling payments in pathUSD on Tempo L2. The `/perplexity/chat` path accepts OpenAI-compatible chat-completion requests with support for multiple Sonar model variants: `sonar`, `sonar-pro`, `sonar-reasoning-pro`, and `sonar-deep-research`. Each request can include web-search options (context size, search type, user location), domain/recency/language filters, structured JSON output via `response_format`, image return, related-question generation, and configurable reasoning effort for the reasoning-pro model. Pricing is model-dependent, roughly $0.005–$0.02 per call.

The same Locus MPP gateway also hosts sibling endpoints for standalone web search (`/perplexity/search` at ~$0.006/call), standard embeddings (`/perplexity/embed` at ~$0.001/call using `pplx-embed-v1-0.6b` or `pplx-embed-v1-4b`), and contextualized embeddings (`/perplexity/context-embed` at ~$0.001/call). All endpoints use the `charge` intent, meaning each call is a one-shot payment.

Note: The probe did not capture a live 402 challenge on HEAD/GET for the `/perplexity/chat` path (it returned 404), which is expected because this endpoint only accepts POST requests. The OpenAPI spec is well-defined with full request schemas, and the gateway's error messages point to valid documentation at `paywithlocus.com/skill.md` and `paywithlocus.com/llms.txt`.

Capabilities

sonar-chatsonar-prosonar-reasoning-prosonar-deep-researchweb-grounded-llmweb-searchembeddingscontextualized-embeddingsstructured-json-outputsearch-domain-filtersearch-recency-filterimage-resultsrelated-questionsmpp-tempo-settlementpay-per-call

Use cases

  • —Agent-driven research queries with real-time web citations
  • —Retrieval-augmented generation using web-grounded Sonar models
  • —Generating embeddings for semantic search over documents
  • —Answering time-sensitive questions with recency-filtered web results
  • —Structured data extraction from the web via JSON schema output

Fit

Best for

  • —AI agents needing web-grounded answers without a Perplexity API key
  • —Pay-per-call access to Perplexity Sonar without subscriptions
  • —Applications requiring cited, up-to-date web information in chat responses
  • —Developers wanting crypto-settled micropayments for LLM inference

Not for

  • —High-volume batch processing where subscription pricing is cheaper
  • —Use cases requiring non-Perplexity models (GPT-4, Claude, etc.)
  • —Applications that cannot settle payments on Tempo L2 / pathUSD

Quick start

curl -X POST https://perplexity.mpp.paywithlocus.com/perplexity/chat \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer <MPP_TOKEN>" \
  -d '{
    "model": "sonar",
    "messages": [{"role": "user", "content": "What happened in tech news today?"}]
  }'

Example

Request

{
  "model": "sonar-pro",
  "messages": [
    {
      "role": "system",
      "content": "Be concise and cite sources."
    },
    {
      "role": "user",
      "content": "What are the latest developments in fusion energy?"
    }
  ],
  "max_tokens": 1024,
  "temperature": 0.7,
  "web_search_options": "{\"search_context_size\": \"medium\", \"search_type\": \"auto\"}",
  "search_recency_filter": "week",
  "return_related_questions": true
}

Endpoint

URLhttps://perplexity.mpp.paywithlocus.com/perplexity/chat
Transporthttp
Protocolmpp
CurrencypathUSD

Quality

0.65/ 1.00

The OpenAPI spec is detailed with full request schemas, model options, and approximate pricing. However, the probe did not capture a live 402 challenge (POST was not attempted), no response schema or example response is documented, and crawled pages all returned 404 (expected for non-endpoint paths). Pricing is approximate and amount fields are null in the spec.

Warnings

  • —Probe returned 404 on HEAD/GET; endpoint is POST-only so liveness via 402 challenge was not confirmed
  • —Pricing amounts are listed as null in x-payment-info; only human-readable approximations are given in description fields
  • —No response schema or example response is provided in the OpenAPI spec
  • —Documentation links (paywithlocus.com/skill.md, paywithlocus.com/llms.txt) were not crawled to verify availability

Citations

Provenance

Indexed frommpp_dev
Enriched2026-04-19 17:35:22Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/mXB8PH