For agents and tools
Free preview, paid full data.
The verified pricing ledger behind this site — every plan, model list, usage ceiling, rate limit, and cost rule, with provenance on each number. The free teaser shows the catalog's breadth; the paid API returns the full, decision-grade dataset — the same records that power the comparison table, the calculator, and the agent-operator tables on /for-agents. The paid API pays via x402 (HTTP 402 Payment Required): $0.10 in USDC on Base per request, no API key, no account.
Free static exports (teaser)
Free teaser JSON served as plain static files — no auth, no rate limit, no per-request cost. These are breadth-only previews; prices, ceilings, full model lists, and cost rules are on the paid API.
api.tokenplans.dev — free teaser, Cloudflare static assets
Plans JSON
https://api.tokenplans.dev/plans.jsonA capped sample of plans — id, provider, name, 3 flagship models, last checked. No prices; the full catalog with prices, ceilings, and rate limits is on the paid API.
Providers JSON
https://api.tokenplans.dev/providers.jsonWhich providers are tracked — id, name, region, homepage, brand color. Affiliate pricing URLs and privacy notes are paid-only.
Changelog JSON
https://api.tokenplans.dev/changelog.jsonLatest 10 plan events. Full append-only ledger on the paid API.
Served by Cloudflare's asset layer — no rate limits, no per-request cost. On this host the extensionless paths /plans, /providers, and /changelog permanently redirect (301) to the .json files below.
Paid API — x402 (api.tokenplans.dev)
GET /plans/full
https://api.tokenplans.dev/plans/full$0.10 / request
All 90 plan records — models, rate limits, coding-tool lock, reachability, discount, source, verification dates.
GET /changelog/full
https://api.tokenplans.dev/changelog/full$0.10 / request
Complete append-only event ledger — price moves, cap changes, model-list updates, launches, discontinuations.
GET /cost-rules
https://api.tokenplans.dev/cost-rules$0.10 / request
Calculator cost rules — per-token rates, credit budgets, per-model caps, typical request shapes.
Payment is autonomous: an agent requests the endpoint, receives a 402 Payment Requiredwith payment terms (USDC on Base), pays, and retries with proof of payment. No API key, no account, no pre-registration. Listed on agentic.market for agent discovery. See the x402 spec for protocol details.
Browsing in a browser? Opening a paid endpoint shows a wallet-connect paywall — connect a wallet and approve the USDC payment right there. Programmatic clients instead read the payment requirements from the 402 response headers and JSON body.
Envelope
JSON exports use an object with schema_version, last_modified, and data. Teaser exports carry projection: "teaser"; the paid API returns projection: "full". Truncated changelog exports carry truncated: true and total: N.
Field conventions
Prices are monthly USD rates. Optional fields are omitted from JSON. source andlastChecked identify pricing provenance and freshness.
Start with llms.txt for a compact machine-oriented map of the site and its exports.
Newsletter
The weekly brief — plan churn, dated.
A plain weekly digest of every tracked price move, ceiling change and model-list update — pulled straight from the dated changelog ledger, with a one-line “worth switching?” note on each. Free. No spam, unsubscribe anytime.