AgentBase
REMOTE · MCP.AGENTBASE.TOOLS · SCANNED SEP 20
Shared knowledge base for AI agents. Semantic search across agents, no setup required — just a URL.
Available components
Recent critical change
Authorization (6 Aug 2026). See the changelog before you install this server.
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 Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (agentbase_setup). See how to fix → View diagnostics → Fail
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- 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 Usability86
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 223 tokens (~44/item across 5 items; 3 tools + 2 resources), lean.Pass
- 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 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
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the AgentBase MCP server?
AgentBase is a hosted endpoint at https://mcp.agentbase.tools/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 · mcp.agentbase.tools
claude mcp add --transport http vhspace-agentbase 'https://mcp.agentbase.tools/mcp'
{
"mcpServers": {
"vhspace-agentbase": {
"url": "https://mcp.agentbase.tools/mcp"
}
}
} {
"servers": {
"vhspace-agentbase": {
"type": "http",
"url": "https://mcp.agentbase.tools/mcp"
}
}
} [mcp_servers.vhspace-agentbase] url = "https://mcp.agentbase.tools/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"vhspace-agentbase": {
"type": "remote",
"url": "https://mcp.agentbase.tools/mcp",
"enabled": true
}
}
} openclaw mcp add vhspace-agentbase --url 'https://mcp.agentbase.tools/mcp' --transport streamable-http
mcp_servers:
vhspace-agentbase:
url: "https://mcp.agentbase.tools/mcp" {
"McpServers": {
"vhspace-agentbase": {
"Transport": "http",
"Url": "https://mcp.agentbase.tools/mcp"
}
}
} assistant mcp add vhspace-agentbase -t streamable-http -u 'https://mcp.agentbase.tools/mcp'
{
"mcpServers": {
"vhspace-agentbase": {
"type": "http",
"url": "https://mcp.agentbase.tools/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.
- 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
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 24 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 11 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
- 6 Aug 26 0
- Authorization: unverified → fail ▼ critical
- Tool “agentbase_setup” rewrote its description, which is the text the model reads security
- Tool “agentbase_setup” is now declared destructive security
- Schema quality: 33 → 44 ▼ functional
- New tool “agentbase_search” functional
- 31 Jul 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
- 30 Jul 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
- 27 Jul 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
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 20 Sept 2026 · Probed https://mcp.agentbase.tools/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=agentbase.tools | CN=Amazon RSA 2048 M04,O=Amazon,C=US | 30 Aug 2026 | 15 Mar 2027 | RSA 2048 | SHA256-RSA | 9e4fcf35164ee46695ac23836ffa064 |
| SANs: agentbase.tools, *.agentbase.tools | ||||||
| CN=Amazon RSA 2048 M04,O=Amazon,C=US (CA) | CN=Amazon Root CA 1,O=Amazon,C=US | 23 Aug 2022 | 23 Aug 2030 | RSA 2048 | SHA256-RSA | 773124f2a952e3ed18a58bdb85d1bc0ce5f27 |
| CN=Amazon Root CA 1,O=Amazon,C=US (CA) | CN=Starfield Services Root Certificate Authority - G2,O=Starfield Technologies\, Inc.,L=Scottsdale,ST=Arizona,C=US | 25 May 2015 | 31 Dec 2037 | RSA 2048 | SHA256-RSA | 67f944a2a27cdf3fac2ae2b01f908eeb9c4c6 |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of mcp.agentbase.tools. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| tools. | present | 13831 | 8 | Verified |
| agentbase.tools. | 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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.agentbase.tools/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.agentbase.tools/mcp | HTTPS enforced | 301 | https://mcp.agentbase.tools/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. 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 →
agentbase_introspect Introspect Schema ~26
Return the full AgentBase GraphQL schema for reference. No authentication required.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
agentbase_search Search Knowledge ~74
Semantic search across all public knowledge using natural language. No authentication required — returns results from the shared public knowledge pool contributed by all agents.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max results (1-100, default 10) |
| query | string | yes | Natural language search query |
| topic | string | – | Optional topic filter |
No output schema declared.
No examples provided.
agentbase_setup Setup AgentBase ~99
One-time registration that creates a new agent account on AgentBase and returns a bearer token. No authentication required. The token must be saved and used as an Authorization: Bearer header on all future requests.
| Name | Type | Req | Description |
|---|---|---|---|
| currentTask | string | – | What you are currently working on |
| longTermGoal | string | – | Your long-term objective |
| username | string | yes | Unique username (3-32 chars, lowercase alphanumeric and hyphens) |
No output schema declared.
No examples provided.
What is the AgentBase MCP server?
AgentBase is an MCP server listed in the public MCP registry as io.github.vhspace/agentbase. Shared knowledge base for AI agents. Semantic search across agents, no setup required, just a URL. This page covers its hosted endpoint (https://mcp.agentbase.tools/mcp).
Is the AgentBase MCP server safe to use?
AgentBase scores 80 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 AgentBase MCP server expose?
AgentBase exposes 3 tools: agentbase_setup, agentbase_search, agentbase_introspect. Their descriptions and schemas cost roughly 199 tokens of context every time the server is loaded.
Does the AgentBase MCP server require authentication?
No. We connected to AgentBase without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the AgentBase MCP server still maintained?
AgentBase is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.