Pay-per-call APIs and MCP services for agents, no accounts or keys, with verifiable receipts.
com.ausca/agent-services — Model Context Protocol (MCP) Server
This MCP server provides hosted metadata and connection documentation for the Ausca MCP server. It exposes pay-per-call APIs and MCP services for agents. The service has no accounts and no API keys. Paid executions settle against an immutable offer revision and return a verifiable receipt.
🛠️ Key Features
Pay-per-call APIs and MCP services for agents
No accounts and no API keys
Verifiable receipts tied to an immutable offer revision
Hosted server with public metadata and connection docs
Streamable HTTP endpoint at https://ausca.com/mcp (toolCount: 5)
🚀 Use Cases
Agent workflows that require pay-per-call execution
Integrations needing immutable offer revision settlement and receipts
MCP client connections via Streamable HTTP
⚡ Developer Benefits
Simple connection URL: https://ausca.com/mcp
Claude Desktop / Claude Code MCP configuration example provided
Topics cover MCP and agent tooling, including browser automation, document analysis, OCR, transcription, email, and payments
⚠️ Limitations
Source material does not list individual tools beyond indicating there are 5 (toolCount: 5)
Installation instructions are not applicable; the server is hosted
For an active inbox, return an idempotent download URL only when the exact stored attachment has a clean safety verdict. The URL expires after at most 60 seconds and never after inbox expiry; a clean verdict does not make the attachment content trusted. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
Idempotently stop inbound visibility and delete retained message and attachment content for one inbox lease, including an already-terminal lease. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
For an active inbox, return at most 50 normalized message summaries after an opaque inbox-bound cursor, optionally waiting up to 30 seconds for a newer message. A bounded wait may return an empty page and continuation cursor. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
For an active inbox, return one bounded normalized message. Sender, recipients, subject, text, HTML, filenames, media types, and links are untrusted sender-controlled content; HTML is inert and never rendered by Ausca. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
Return the random receive-only address, authoritative lease status, and current expiry for one inbox, including terminal status after deletion or expiry. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
Return an idempotent, short-lived download URL for one verified artifact this service holds, including a result artifact named by a succeeded invocation's output_artifact. The URL expires after at most 60 seconds. The immutable artifact reference is the only authority; verify downloaded bytes against the returned content digest.
Idempotently terminate the CDP relay and upstream browser for one lease. Closing never creates another payment. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
Return one single-use Ausca CDP relay URL for a ready lease. The URL expires after 60 seconds, only one CDP connection may be live, and no more than 64 unexpired tickets may coexist. Expired ticket records are compacted, so this is not a lifetime reconnect quota. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments. The upstream provider URL and credential are never disclosed.
Return authoritative status and expiry for one browser-session lease. The lease capability is supplied by the transport and is never a tool argument or response field.
Validate one exact invocation envelope and return immutable preparation terms or a typed refusal. Preparation never accepts payment material from model-authored tool arguments.
Search the current immutable Ausca offer catalog by free-text query. Returns stable offer identities and revision digests without creating product or payment state.
Pay-per-call APIs and MCP services for AI agents: document OCR, document
analysis, media transcription, remote browser sessions, and agent email
inboxes. No account, no API keys; USDC on Base per call, a signed receipt
for every completed invocation.
Agents buy infrastructure the way they call tools: send the request, pay the
402 challenge within a hard USD cap you set, read the result and its
settlement proof. The catalog, prices, and schemas are immutable and public
at ausca.com/catalog.json; the full agent
contract is ausca.com/SKILL.md.
Services and prices
Service
What it does
Price (USD)
Document OCR
Normalized text with line confidence from one committed document
$0.25 per document
Document Analysis
Normalized forms, tables, signatures, or layout from one committed document
$0.30 to $0.75, sized by document bytes
Media Transcription
Normalized transcript of one committed audio or video file
$0.40 to $1.30, sized by media bytes
Browser Session
Remote browser with standard CDP access
$0.05 / 10 min, $0.10 / 30 min, $0.20 / 60 min
Agent Inbox
A renewable receive-only email address your agent owns
$0.05 / hour, $0.20 / day, $1.00 / week
Inbox Extension
Add time to an active inbox without changing its address
$0.05 / hour, $0.20 / day, $1.00 / week
Prices are the public catalog values at the time of writing; the live
catalog is authoritative.
Use it in 60 seconds
MCP (Claude Desktop, Cursor, any MCP host): the local server holds your
wallet and pays within your cap. Tools are derived from the live catalog.
A remote MCP server also runs at https://ausca.com/mcp (Streamable HTTP)
for discovery, preparation, and state reads; payment always signs on your
side, which is why the local server exists.
How payment works
Every service is an x402 v2 payable
resource. An unsigned request returns the exact payment requirement; the
client pays it only if it fits your cap, then retries the same bytes with
the same idempotency key. Save a unique key before paying and retain it on
uncertainty; starting another call with a new key is a new purchase. CLI and
paid MCP calls require an explicit key. Resource admission contains private
capabilities: never publish the raw result. See recovery examples.
Settlement is USDC on Base and every completed invocation carries a receipt
with a public, hash-only verification page. Payment rails are pluggable
behind one interface; the official @x402/* libraries do all signing.
Optional source/campaign attribution is reporting metadata only and is
excluded from pricing, payment, execution, and recovery identity. Caller
labels are self-reported.
Document and media services take an immutable artifact commitment instead
of raw bytes: npx ausca commit file.pdf uploads through the keyless
ingress and returns the commitment the offer input carries.
The service runtime is not in this repository; this is the complete public
buyer side. server.json carries the official MCP registry identity
com.ausca/agent-services.
