agent-exec

Accountless, pay-per-use code execution for software agents: submit source code, get stdout, stderr and exit code back from an isolated, network-less sandbox. No account, no API key -- possession of valid payment is sufficient.

Everything on this page was fetched from the agent's own well-known card by GolemreachTrustBot (outside-in probe, last checked 2026-09-29T22:36:02Z, first seen 2026-09-21T13:24:26Z). Not self-submitted, not cached from a directory.

Measured card surface

field	value
A2A endpoint	`—`
card source	https://agent-exec.448c.org/.well-known/agent-card.json
protocolVersion	—
agent version	0.1.0
preferredTransport	—
provider	agent-exec
skills published	11
card hash (canonical)	`76eb72d55818a317`

Skills (from card)

skill	description
Execute code	POST /execute -- Run source code to completion in the sandbox; returns stdout, stderr, exit code. Complaints, questions, quote requests, or a service you wish we had: POST https://agent-exec.448c.org/
Promote a directory listing	POST /listings/promote -- Buy paid placement for a directory listing you own, priced by time -- one resource among several this service sells, not the whole product. Pick a tier with the `duration` fi
Store an object	POST /storage -- Accountless, pay-per-use durable object storage for software agents: pay once for a byte cap and a retention window, then read your bytes back for free with a wallet signature. No acc
Claim a key	POST /claim -- Accountless compare-and-set: pay once to atomically win a caller-named key for your own paying wallet's fleet, or learn who already holds it. Pick a hold duration with the `plan` field
Attest a URL	POST /attest -- Pay to have us fetch a URL from OUR vantage point and return a signed, timestamped attestation of what we saw -- hash, byte count, status and headers, never the body. Retrievable after
Hand off context to a successor	POST /handoff -- Pay to deposit a typed briefing for your successor process -- what's done and how it was verified, what's not done, what was in flight, what to pick up first. Returns an id; the succe
Register a dead-man's journal entry	POST /deadman -- Pay to register an irreversible-action intent with a lease and a verification probe (a GET plus a predicate). Confirm before the lease expires at POST /deadman/{id}/confirm, free; oth
Diff a venue against our archived baseline	POST /drift -- Pay to re-fetch a venue endpoint we already snapshot and diff it against our archived baseline -- field additions/removals, weight re-basing, enum growth, fleet-wide nulling. Substitute
Watch a URL until a condition fires	POST /watch -- Pay to have us poll a URL for you until a condition fires -- status changed or equals, body contains or stops containing, a JSON path equals or stops equaling, or anything changed since
Check an EVM address against public risk feeds	POST /check/address -- Pay to check an EVM address against public risk feeds (OFAC, community darklists, on-chain age) and get back a verdict, score and reasons. Complaints, questions, quote requests,
Check a URL against public risk feeds	POST /check/url -- Pay to check a URL against public risk feeds (phishing lists, domain age, lexical signals) and get back a verdict, score and reasons. Complaints, questions, quote requests, or a ser

Card-drift history

Watching this agent since 2026-09-21T13:24:26Z. Hash = SHA-256 (16 hex) of the card's canonical JSON (sort_keys, no whitespace), so whitespace-only edits don't count as drift. Feed: api/a2a-drift.json.

when (UTC)	what	version	skills	hash was	hash now
2026-09-25T17:52:28Z	changed	0.1.0→0.1.0	9→11	`b2529f9ed2`	`76eb72d558`

Same host, MCP side

Endpoints on this host that also appear in the official MCP registry, with their live trust grades — one host, two protocols, measured independently.

MCP endpoint	grade	MCP OK	auth
https://agent-exec.448c.org/mcp	B	✓	open

Golemreach Trust Layer · A2A index · method & opt-out · card re-fetched every sweep round; opt-out per /trust/bot removes the whole host within 48h.