Access plans

Stock Trends API plans

Choose a self-serve subscription plan for Stock Trends API access, or contact us for enterprise and agent-oriented deployments.

Monthly subscriptions include protected API access, quota limits, and rate limits appropriate to each plan.

Access modes

Subscription plans cover API key access to the full endpoint set. Stock Trends intelligence is also reachable through other transports and payment rails, all over the same API:

  • Public discovery — The interactive docs at /v1/docs and OpenAPI schema at /v1/openapi.json are publicly accessible, along with capability discovery, workflow, symbol resolution, pricing, and cost-estimate endpoints. Use these to explore and budget before subscribing. The live pricing catalog is available at GET /v1/pricing/catalog.
  • MCP — MCP-compatible agents can reach Stock Trends discovery, methodology, pricing, and evidence resources plus free workflow cost planning through the Stock Trends MCP server. Premium tools there run on subscription access. No plan is required for the credential-free surface.
  • Agent pay via x402 — AI agents can pay per request on-chain without a subscription. Stock Trends supports standard x402 V2: a conforming buyer handles the challenge, payment, and retry itself, with no Stock Trends-specific payment integration. No plan required. See the x402 quickstart.
  • Machine Payment Protocol (MPP) — Funded session-based payment for repeated agent workflows. See the MPP quickstart.

The live pricing catalog and API response headers are authoritative.

Pricing clarity: STC and USD cost

Stock Trends Credits (STC) are the API's pricing unit. For current billing and payment presentation, 1 STC = $1.00 USD. This means a request priced at 0.50 STC costs $0.50 USD, a request priced at 0.75 STC costs $0.75 USD, and a request priced at 1.25 STC costs $1.25 USD.

x402 and MPP requests may be settled through machine-payment rails, including USDC on Base where supported, but the user-facing economic cost is still shown from the STC-denominated endpoint price. The live pricing catalog and response headers remain authoritative before execution.

No hidden conversion math: current USD cost = STC price × $1.00. Always check GET /v1/pricing/catalog and the payment-required response before running paid workflows.

Endpoints by use case

Market context and screening

  • GET /v1/market/regime/latest — Current regime classification
  • GET /v1/agent/screener/top — Top-ranked instruments
  • GET /v1/breadth/sector/latest — Sector breadth snapshot
  • GET /v1/stim/latest — Return distribution stats per symbol

Decision and portfolio workflows

  • POST /v1/decision/evaluate-symbol — Symbol-level evaluation
  • POST /v1/portfolio/evaluate — Evaluate a supplied portfolio
  • POST /v1/portfolio/compare — Compare two portfolios
  • POST /v1/portfolio/construct — Build a scored portfolio

Pricing and cost discovery

  • GET /v1/pricing/catalog — Live endpoint pricing rules (public)
  • GET /v1/cost-estimate — Estimate workflow cost before execution

Agent lifecycle and metering

  • GET /v1/agents/{agent_id}/usage — Usage summary
  • GET /v1/agents/{agent_id}/ledger — Economics ledger
  • POST /v1/agents/{agent_id}/disable — Disable an agent

Premium endpoints above support Subscription · x402 · MPP. Check GET /v1/pricing/catalog for current per-endpoint pricing.

Full documentation →

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Need enterprise or agent-scale access?

For custom usage envelopes, internal workflows, partner integrations, or agent-scale deployments, contact Stock Trends directly.

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