Paid API Access services

Payable paid api access endpoints for agents, ranked by measured reliability.

cheaptokens.ai

cheaptokens.ai

77
score

OpenAI-compatible LLM inference and chat completions via discounted Venice API credits. Pay USDC to receive a live Venice.ai API key for /api/v1 models, chat, images, audio, video, and embeddings. Same-Day credits are 30–90% below Venice direct and expire at 23:59 UTC; Prepaid API Keys support recurring agent jobs.

USDC Base

agent402.tools

agent402.tools

75
score

Ask a typed question about any content and get an answer your code can branch on, not prose to parse. Send state (the content, a string or object) and questions (your own ids mapped to question objects); get back answers keyed by those ids. Three question types: choice (pick one of your named options: returns choice, probabilities per option and confidence), score (a position on levels you describe, lowest first: returns score as a fractional level index, probabilities per level index.

USDC algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=ArbitrumBaseoptimismOther EVMPolygonSolanastellar:pubnet

dripstack.xyz

dripstack.xyz

71
score

Paid JSON for stock-picker calls from financial newsletters and investing articles. Query params: optional `date=YYYY-MM-DD` for one UTC effective day, optional `limit`. Default (omit `date`) returns the latest UTC effective day with picks. Rows missing publication timestamps may use extractedAt for the effective day. Returns 404 when no picks exist for the day. USDC `exact` x402 on Base or Solana; amount is based on distinct attributed source posts returned.

USDC BaseSolana

dripstack.com

dripstack.com

70
score

Paid JSON for stock-picker calls from financial newsletters and investing articles. Query params: optional `date=YYYY-MM-DD` for one UTC effective day, optional `limit`. Default (omit `date`) returns the latest UTC effective day with picks. Rows missing publication timestamps may use extractedAt for the effective day. Returns 404 when no picks exist for the day. USDC `exact` x402 on Base or Solana; amount is the flat stock-picks unit price times distinct attributed source posts returned (call GET /api/v1/stock-picks/quote for the exact total).

USDC BaseSolana

www.getbags.app

www.getbags.app

68
score

BAGS Agent API index — machine-readable directory of the agentic payment API, MCP server, and x402 payment surface.

USDC Base

dokimo.augaster.com

dokimo.augaster.com

67
score

Dokimo Verify API (GET) - scheme demo: recomputes a sample dokimo-merkle-v1 proof to its root. For real caller verification, POST /paid/verify (recompute + on-chain anchor check). Scheme: /merkle-spec.html.

USDC Base

x402.aubr.ai

x402.aubr.ai

66
score

Send a question about longevity, aging, or lifespan science. Returns a request ID to poll for the AI-generated answer from Aubrai, VitaDAO's decentralized co-scientist.

USDC Base

x402-api.aubr.ai

x402-api.aubr.ai

66
score

Send a question about longevity, aging, or lifespan science. Returns a request ID to poll for the AI-generated answer from Aubrai, VitaDAO's decentralized co-scientist.

USDC Base

chat.gedx402.com

chat.gedx402.com

66
score

Multi-model chat completions. POST messages[] and set model to any LLM id from GET /v1/models; dynamic USDC pricing scales with model and token usage. Hero: GET /heroes/chat-completions.

USDC ArbitrumBaseOther EVMPolygonSolana

api.metalend.tech

api.metalend.tech

66
score

Returns MetaLend API services directory with a one-line summary of each RebalancerResource endpoint plus links to API docs.

USDC Base

api.moltalyzer.xyz/api/moltbook/digests

api.moltalyzer.xyz

65
score

Historical hourly AI intelligence digests (1-24 hours lookback). Track how AI agent sentiment, topics, and narratives evolve over time. Each digest contains full analysis of that hour's agent activity.

BTCUSDC BaseLightning

api.strale.io

api.strale.io

64
score

Generate a realistic mock API response with proper headers, status codes, and schema-matching body data.

USDC Base

api.strale.io

api.strale.io

64
score

Test an API endpoint: send request, validate response status and schema. Integration testing as a service.

USDC Base

api.strale.io

api.strale.io

64
score

Look up known vulnerabilities for a package+version via OSV API. Supports npm, PyPI, Maven, Go, Cargo, NuGet. Returns CVEs with severity and fix versions.

USDC Base

ozmium.org

ozmium.org

64
score

The Ozmium machine API front door: pays back the full priced catalog (every /v1 resource with live pricing, discovery links, OpenAPI, MCP tools). The same catalog is free at GET /v1- this priced alias exists because agents and x402 scanners probe /api expecting the 402 handshake. GET /api.

USDC Base

netintel.dev

netintel.dev

64
score

OpenAI-compatible chat completions gateway (alias of /v1/chat/completions for api/v1-style base URLs) — standard request shape, model chosen in the body: any gpt-* chat model (not Claude/embeddings), each at its own price. Priced per model, $0.005–$0.65 per call in USDC via x402, no API key: POST unpaid and the 402 quotes your model's exact price. Supports response_format json_object. Free model catalog: GET /v1/models.

USDC BaseSolana

netintel.dev

netintel.dev

64
score

OpenAI-compatible text embeddings API (alias of /v1/embeddings for api/v1-style base URLs) — input as a string or batch of up to 128 strings, model text-embedding-3-small (default) or text-embedding-3-large. Flat $0.005 per call in USDC via x402, no OpenAI account or API key.

USDC BaseSolana

api.webbersites.com

api.webbersites.com

64
score

ANTHROPIC-COMPATIBLE /v1/messages — Claude Haiku 4.5 through the exact Anthropic API dialect: same request/response shape, no Anthropic account, the x402 payment IS the auth. Point an Anthropic SDK's base_url at https://api.webbersites.com and pay per call. Caps: 16,000 input chars, 1,024 output tokens (max_tokens clamped), text-only, no streaming.

USDC Base

api.delx.ai

api.delx.ai

64
score

TLS certificate inspection API for agents: inspect issuer, subject, SANs, and expiry for one HTTPS host for $0.01 USDC before an agent trusts the channel. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

USDC BaseSolana

api.delx.ai

api.delx.ai

64
score

Score how ready an API is for agent integration using health, OpenAPI, auth hints, x402 signals, and login surface checks for $0.01 USDC. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

USDC BaseSolana

api.delx.ai

api.delx.ai

64
score

Open Graph metadata API for agents: extract Open Graph and Twitter card fields from a public URL for $0.01 USDC so agents can unfurl links and preview how a page renders in feeds. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

USDC BaseSolana

api.delx.ai

api.delx.ai

64
score

List object keys. Call when you introspect agent-held JSON objects. Returns keys and count for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

USDC BaseSolana

api.delx.ai

api.delx.ai

64
score

Inspect URL reachability, status, latency, and key headers for $0.001 USDC. Call when you need a cheap uptime preflight before paying a heavier fetch—not a full page extract and not a crawl. Returns status and timing via x402. No API key, no subscription.

USDC BaseSolana

api.delx.ai

api.delx.ai

64
score

Extract issue/issuewild hosts from CAA record texts. Call when inventorying allowed CAs from CAA answers. Returns hosts list as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

USDC BaseSolana