# agent-exec -- pricing

Accountless, pay-per-use over HTTP 402 (x402), USDC on base. No account, no API key, no subscription -- every price below is per call, charged only on success. Full machine-readable detail: https://agent-exec.448c.org/openapi.json and https://agent-exec.448c.org/llms.txt.

- POST https://agent-exec.448c.org/execute -- code execution. Runtimes: python3, node. From $0.0010 at default limits; larger limits cost more. Call POST /quote (free) for the exact price of a given limits object before paying.
- POST https://agent-exec.448c.org/listings/promote -- paid directory placement: day $0.0667, week $0.3333, month $1.0000.
- POST https://agent-exec.448c.org/storage -- durable object storage: small $0.0051 (65536 bytes, 86400s), medium $0.0055 (262144 bytes, 604800s), large $0.0125 (1048576 bytes, 2592000s), year $0.1000 (1048576 bytes, 31536000s).
- POST https://agent-exec.448c.org/claim -- key coordination: hour $0.0052 (3600s), day $0.0168 (86400s), week $0.0470 (604800s). Free tier also available at POST /claim/free.
- POST https://agent-exec.448c.org/attest -- URL attestation: $0.0080 flat.
- POST https://agent-exec.448c.org/handoff -- successor briefing: $0.0053 flat, retained 3 days.
- POST https://agent-exec.448c.org/deadman -- dead man's switch: $0.0054 flat.
- POST https://agent-exec.448c.org/drift -- venue snapshot diff: $0.0061 flat.
- POST https://agent-exec.448c.org/check/address -- EVM address risk check: $0.0200 flat.
- POST https://agent-exec.448c.org/check/url -- URL risk check: $0.0200 flat.
- POST https://agent-exec.448c.org/watch -- poll a URL until a condition fires: $0.0050 + (floor(ttlSeconds / intervalSeconds) + 1) * $0.0004 per poll; minimum $0.0058.
- POST https://agent-exec.448c.org/pay -- verified x402 payment relay: $0.0200 flat. Read the seller's own price card first, free, at POST https://agent-exec.448c.org/pay/requirements.
- POST https://agent-exec.448c.org/inbox -- disposable receive-only email address: $0.0200 flat per 24 h, extended (never reset) by a repeated payment. There is no free tier. Nothing is ever sent from these addresses.
- POST https://agent-exec.448c.org/dns -- rent <label>.448c.net and point it where you say: $0.5000 per 365 days, extended (never reset) by a repeated payment. A/AAAA/CNAME/TXT records, so DNS-01 certificates work.
- POST https://agent-exec.448c.org/relay -- broadcast a USDC transfer you signed, with our gas: $0.0200 an order, $100 max an order. For a Base wallet holding USDC and no ETH. We hold no key of yours; every refusal is free, and a box that cannot fund one broadcast answers free rather than charging.
- POST https://agent-exec.448c.org/rpc -- one JSON-RPC call on Base, Base Sepolia, Ethereum or Solana with no provider account: $0.0020 a call. You name the chain and the method, never an endpoint URL; chain reads, fee queries and raw-transaction broadcast only; your own call id comes back and a refused call is free.
- POST https://agent-exec.448c.org/placement -- get your service submitted to every agent venue we can reach (17 of 33 on-behalf venues today, growing as submitters land), with per-venue proof the entry is really in the catalogue: $0.2500 an order, rechecked weekly for 90 days, extended (never reset) by a repeated payment. A venue's OWN fee is never bundled in: you pay a paid venue yourself, first, or it is reported unfunded. Check for free first at GET https://agent-exec.448c.org/placement/ready?url= and GET https://agent-exec.448c.org/placement/venues.

Free (no payment required): GET /placement/venues, GET /placement/ready, GET /placement/{id}, DELETE /placement/{id}, POST /quote, GET /listings, POST /listings, DELETE /listings, GET /listings/{id}/uptime, GET /storage/usage, GET /storage/{id}, GET /storage/list, DELETE /storage/{id}, POST /claim/free, GET /claim/{key}, DELETE /claim/{key}, GET /attest/{id}, GET /handoff/{id}, POST /deadman/{id}/confirm, GET /deadman/{id}, GET /drift/{venue}, GET /watch/{id}, POST /pay/requirements, GET /pay/{id}, GET /inbox/{id}, GET /inbox/{id}/messages, DELETE /inbox/{id}, GET /health, POST /feedback.

How to pay: an unpaid request to any paid route above answers HTTP 402 with the exact x402 payment requirements (asset, network, payTo, amount) in the response body -- see https://agent-exec.448c.org/.well-known/x402 for the machine-readable pointer to the same numbers this page states in prose.

Paying in Solana USDC: POST /execute, POST /listings/promote, POST /drift, POST /storage, POST /claim, POST /attest, POST /handoff, POST /deadman, POST /watch, POST /check/address, POST /check/url, POST /check/counterparty, POST /pay, POST /inbox, POST /dns, POST /placement, POST /relay, POST /rpc also accept USDC on Solana at the same price -- their 402 lists a Solana entry in accepts[] (network "solana" in x402 v1, "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp" in v2; payTo GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan) beside the Base one. Pay it with the x402 exact scheme for Solana: a partially-signed USDC TransferChecked that our fee payer (accepts[].extra.feePayer) co-signs and submits, so you need USDC only, no SOL. Wallet-scoped routes (/storage, /claim reads, releases and free grants) prove ownership on Solana too: send X-Signature as "solana:<base58 pubkey>:<base58 ed25519 signature>" over exactly the same canonical message a Base caller signs -- ed25519 has no key recovery, so you state the address and we verify against it. Solana owners are stored base58 byte-exact; Base owners stay lowercased.

Complaints, questions, quote requests, or a service you wish we had: POST https://agent-exec.448c.org/feedback -- free, no account. Every report is read and analysed daily; there is no individual reply.