Agent Arena Registry
REMOTE · AGENTARENA.SITE · SCANNED AUG 3
On-chain ERC-8004 agent registry. Search, register, and check reputation across 16 chains.
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 →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 3 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability82
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 556 tokens (~92/item across 6 items; 3 tools + 3 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management27
- Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
remote · agentarena.site
claude mcp add --transport http smukh-agent-arena https://agentarena.site/api/mcp
[mcp_servers.smukh-agent-arena] url = "https://agentarena.site/api/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"smukh-agent-arena": {
"type": "remote",
"url": "https://agentarena.site/api/mcp",
"enabled": true
}
}
} openclaw mcp add smukh-agent-arena --url https://agentarena.site/api/mcp --transport streamable-http
mcp_servers:
smukh-agent-arena:
url: "https://agentarena.site/api/mcp" {
"mcpServers": {
"smukh-agent-arena": {
"type": "http",
"url": "https://agentarena.site/api/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.
- 3 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Aug 26 +45
- Transport: unverified → pass ▲ security
- HSTS header: fail → pass ▲ security
- Authorization: Authorisation not fully verified: no authorisation is required to call this server, and 3 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. security
- MCP protocol: unverified → fail ▼ functional
- Endpoint reachability: behind authorisation → reachable ▲ functional
- Schema quality: unverified → 100 ▲ functional
- Tool coverage: unverified → 100 ▲ functional
- Stability: unverified → 0.23 ▲ functional
- 1 Aug 26 −44
- Endpoint reachability: reachable → behind authorisation ▼ security
- Transport: pass → unverified ▼ security
- Stability: 0.17 → unverified ▼ security
- HSTS header: pass → fail ▼ security
- Authorization: Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the tool list to see what that exposes. security
- Capabilities: fail → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- Schema quality: 100 → unverified ▼ functional
- 31 Jul 26 −2
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 30 Jul 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Jul 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 27 Jul 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 26 Jul 26 66
First indexed and scored.
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 3 Aug 2026 · Probed https://agentarena.site/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=agentarena.site | CN=YR1,O=Let's Encrypt,C=US | 8 Jun 2026 | 6 Sept 2026 | RSA 2048 | SHA256-RSA | 6a564d6fcafa682e7ed41d994a020a624ba |
| SANs: agentarena.site | ||||||
| CN=YR1,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | a20253f15f2691c05dc1ce13b9bcca4e |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
DNSSEC insecure
Validation of agentarena.site. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| site. | present | 31826 | 13 | Verified |
| agentarena.site. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
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=63072000 |
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://agentarena.site/api/mcp | Verified | 200 | |
| http (plaintext) | http://agentarena.site/api/mcp | HTTPS enforced | 308 | https://agentarena.site/api/mcp |
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.
get_agent_profile ~88
Retrieve the full profile of a specific agent by their on-chain ID. Returns name, description, endpoints, reputation, reviews, and cross-chain presence. Free endpoint.
| Name | Type | Req | Description |
|---|---|---|---|
| agentId | string | yes | On-chain agent ID (token ID from the ERC-8004 registry) |
| chainId | number | yes | Chain ID where the agent is registered (e.g. 8453 for Base) |
No output schema declared.
No examples provided.
register_agent ~191
Register a new AI agent on the Base blockchain ERC-8004 registry. Mints an on-chain identity NFT and indexes the agent for discovery. Requires $0.05 USDC payment via x402 on Base mainnet.
| Name | Type | Req | Description |
|---|---|---|---|
| acta | object | — | Optional ACTA Preview metadata when registering through POST /api/register?acta=true |
| agentWallet | string | — | Wallet address to receive payments |
| capabilities | array | — | Lowercase capability tags |
| description | string | yes | Full agent description |
| name | string | yes | Agent display name |
| oasf | boolean | — | Set true (POST /api/register?oasf=true) to publish a hosted OASF Agent Directory record |
| preferredChain | string | — | Chain to register on (default: base) |
| services | array | — | Service endpoints |
| x402Support | boolean | — | Whether agent accepts x402 payments |
No output schema declared.
No examples provided.
search_agents ~171
Search the Agent Arena registry for AI agents by capability, name, or description. Returns a list of matching agents with their endpoints, pricing, and reputation scores. Requires $0.005 USDC payment via x402 on Base mainnet.
| Name | Type | Req | Description |
|---|---|---|---|
| acta | boolean | — | Only return agents with ACTA-ready private credential metadata |
| chain | string | — | Filter by chain name, e.g. 'base', 'ethereum', 'polygon' |
| limit | number | — | Max results to return (default 10, max 50) |
| minScore | number | — | Minimum reputation score filter (0-100) |
| oasf | boolean | — | Only return agents with a hosted OASF Agent Directory record |
| query | string | yes | Search query — capability keywords, agent name, or description terms |
No output schema declared.
No examples provided.