Agent Verification Utility
REMOTE · AGENT-ECONOMY.KGNINJA.DEV · SCANNED OCT 4
Deterministic JSON checks with signed evidence and x402-paid execution
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security71
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability67
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 963 tokens (~192/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage89
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 67% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
How do I install the Agent Verification Utility MCP server?
Agent Verification Utility is a hosted endpoint at https://agent-economy.kgninja.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · agent-economy.kgninja.dev
claude mcp add --transport http dev-kgninja-agent-economy-agent-verification-uti 'https://agent-economy.kgninja.dev/mcp'
{
"mcpServers": {
"dev-kgninja-agent-economy-agent-verification-uti": {
"url": "https://agent-economy.kgninja.dev/mcp"
}
}
} {
"servers": {
"dev-kgninja-agent-economy-agent-verification-uti": {
"type": "http",
"url": "https://agent-economy.kgninja.dev/mcp"
}
}
} [mcp_servers.dev-kgninja-agent-economy-agent-verification-uti] url = "https://agent-economy.kgninja.dev/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"dev-kgninja-agent-economy-agent-verification-uti": {
"type": "remote",
"url": "https://agent-economy.kgninja.dev/mcp",
"enabled": true
}
}
} openclaw mcp add dev-kgninja-agent-economy-agent-verification-uti --url 'https://agent-economy.kgninja.dev/mcp' --transport streamable-http
mcp_servers:
dev-kgninja-agent-economy-agent-verification-uti:
url: "https://agent-economy.kgninja.dev/mcp" {
"McpServers": {
"dev-kgninja-agent-economy-agent-verification-uti": {
"Transport": "http",
"Url": "https://agent-economy.kgninja.dev/mcp"
}
}
} assistant mcp add dev-kgninja-agent-economy-agent-verification-uti -t streamable-http -u 'https://agent-economy.kgninja.dev/mcp'
{
"mcpServers": {
"dev-kgninja-agent-economy-agent-verification-uti": {
"type": "http",
"url": "https://agent-economy.kgninja.dev/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 2 Oct 26 +2
- Tool “prepare_verify_evidence_purchase” rewrote its description, which is the text the model reads security
- Tool “quote_verify_evidence” rewrote its description, which is the text the model reads security
- Schema quality: pass → fail ▼ functional
- Tool coverage: 0% → 67% ▲ functional
- Schema quality: good → excellent functional
- “prepare_verify_evidence_purchase” reworded the description of “idempotency_key” cosmetic
- “prepare_verify_evidence_purchase” reworded the description of “intent” cosmetic
- “quote_verify_evidence” reworded the description of “idempotency_key” cosmetic
- “quote_verify_evidence” reworded the description of “intent” cosmetic
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 10 Sept 26 +1
- Stability: 0.97 → pass security
- 8 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 6 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 14 Aug 26 0
- Server version: 0.4.2 → 0.4.3 functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 6 Oct 2026 · Probed https://agent-economy.kgninja.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=kgninja.dev | CN=WE1,O=Google Trust Services,C=US | 6 Oct 2026 | 4 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | a2cda14fa9fe35ba133d37c56999fadd |
| SANs: kgninja.dev, agent-economy.kgninja.dev, *.agent-economy.kgninja.dev | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of agent-economy.kgninja.dev. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| kgninja.dev. | present | 2371 | 13 | Verified |
| agent-economy.kgninja.dev. | Verified address RRset verified with the apex keys |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000 |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | no-referrer |
| permissions-policy | camera=(), microphone=(), geolocation=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://agent-economy.kgninja.dev/mcp | Verified | 200 | |
| http (plaintext) | http://agent-economy.kgninja.dev/mcp | Inconclusive | 405 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
describe_verify_evidence Describe Agent Verification Utility ~37
Describe when deterministic verification is useful, when it is not, free request validation, recipes, limits, and the explicit paid MCP path.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_revenue_goal_status Get Revenue Goal Status ~43
Read the active revenue goal, measured funnel, contribution margin, and the next bounded improvement recommendation. This tool never changes price, spends funds, or sends messages.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
prepare_verify_evidence_purchase Prepare HTTP Purchase ~425
Prepare an HTTP purchase request for deterministic JSON verification after a successful free precheck; a prior quote tool call is optional. After a successful free precheck at POST /validate-request, supply the unchanged intent and its precheck_receipt.receipt_digest. Creates or reuses a persisted quote and records observability events; no payment, signing or paid verification is performed. The bound quote ties request/evidence digests, precheck digest, spend policy, quoted amount, network, asset, recipient and expiry together. Server availability, fresh cost basis and conservative contribution-margin thresholds must pass. Returns JSON text and structuredContent containing quote, request (POST /verify-evidence, content-type and X-Quote-ID headers, unchanged intent body), expected_first_status=402 and expected_payment_header=PAYMENT-REQUIRED. It does not send this request. Application failures return isError=true with JSON error.code, message, retryable and optional details (for example PRECHECK_STALE, PRICE_CAP_EXCEEDED, IDEMPOTENCY_KEY_CONFLICT, IDEMPOTENCY_KEY_EXPIRED or UNPROFITABLE_TRANSACTION); invalid argument shapes are rejected by MCP schema validation. Re-run precheck after request/policy changes; do not pay on refusal. Next send the returned request to obtain a challenge, check binding, amount, network, asset, payTo and expiry against local policy, then authorize payment separately. Use quote_verify_evidence when only quote terms are needed.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotency_key | string | yes | Required 16-128 characters from A-Z, a-z, 0-9, underscore or hyphen. Reuse with the unchanged intent to reuse an unexpired quote; changed bindings return IDEMPOTENCY_KEY_CONFLICT. An expired key retu… |
| intent | object | yes | Required prechecked purchase intent: request, spend_policy and precheck_receipt_digest are all required, with no defaults or optional fields. Preserve the request and policy used in the successful fr… |
No output schema declared.
No examples provided.
quote_verify_evidence Quote Verification ~397
Obtain a free bound quote for deterministic checks on supplied JSON before deciding to purchase. After a successful free precheck at POST /validate-request, supply the unchanged intent and its precheck_receipt.receipt_digest. Creates or reuses a persisted quote and records observability events; no payment, signing or paid verification is performed. The bound quote ties request/evidence digests, precheck digest, spend policy, quoted amount, network, asset, recipient and expiry together. Server availability, fresh cost basis and conservative contribution-margin thresholds must pass. Returns the quote as JSON text and structuredContent: quote_id, request_hash, price (atomic USDC, 6 decimals), expires_at, economic_guard, purchase instructions and paid_verification_binding in state quoted, not a paid receipt. Application failures return isError=true with JSON error.code, message, retryable and optional details (for example PRECHECK_STALE, PRICE_CAP_EXCEEDED, IDEMPOTENCY_KEY_CONFLICT, IDEMPOTENCY_KEY_EXPIRED or UNPROFITABLE_TRANSACTION); invalid argument shapes are rejected by MCP schema validation. Re-run precheck after request/policy changes; do not pay on refusal. Next use prepare_verify_evidence_purchase with the same key and intent for the HTTP purchase request, or explicitly authorize the separate paid verify_evidence flow.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotency_key | string | yes | Required 16-128 characters from A-Z, a-z, 0-9, underscore or hyphen. Reuse with the unchanged intent to reuse an unexpired quote; changed bindings return IDEMPOTENCY_KEY_CONFLICT. An expired key retu… |
| intent | object | yes | Required prechecked purchase intent: request, spend_policy and precheck_receipt_digest are all required, with no defaults or optional fields. Preserve the request and policy used in the successful fr… |
No output schema declared.
No examples provided.
verify_evidence Verify Evidence (paid) ~61
Run deterministic checks and return Ed25519-signed evidence after one explicitly authorized x402 payment. A free precheck receipt and a matching bound payment requirement are required before signing.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotency_key | string | yes | – |
| intent | object | yes | – |
No output schema declared.
No examples provided.
What is the Agent Verification Utility MCP server?
Agent Verification Utility is an MCP server listed in the public MCP registry as dev.kgninja.agent-economy/agent-verification-utility. Deterministic JSON checks with signed evidence and x402-paid execution. This page covers its hosted endpoint (https://agent-economy.kgninja.dev/mcp).
Is the Agent Verification Utility MCP server safe to use?
Agent Verification Utility scores 82 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Agent Verification Utility MCP server expose?
Agent Verification Utility exposes 5 tools: describe_verify_evidence, get_revenue_goal_status, quote_verify_evidence, prepare_verify_evidence_purchase, verify_evidence. Their descriptions and schemas cost roughly 963 tokens of context every time the server is loaded.
Does the Agent Verification Utility MCP server require authentication?
No. We connected to Agent Verification Utility without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Agent Verification Utility MCP server still maintained?
Agent Verification Utility is still listed as active in the MCP registry. We last reached this channel on 4 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.