FirstKey
REMOTE · MCP.FIRSTKEY.IO · SCANNED SEP 29
FirstKey MCP: agent wallets, free cycles faucet, and one-command site deploys on ICP.
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 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 8 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 Usability76
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1050 tokens (~131/item across 8 items; 8 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 Management17
- Stability observed for 5 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
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 2 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "deploy_site" implies "deploy" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
How do I install the FirstKey MCP server?
FirstKey is a hosted endpoint at https://mcp.firstkey.io/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.firstkey.io
claude mcp add --transport http firstkeyhq-firstkey-mcp 'https://mcp.firstkey.io/mcp'
{
"mcpServers": {
"firstkeyhq-firstkey-mcp": {
"url": "https://mcp.firstkey.io/mcp"
}
}
} {
"servers": {
"firstkeyhq-firstkey-mcp": {
"type": "http",
"url": "https://mcp.firstkey.io/mcp"
}
}
} [mcp_servers.firstkeyhq-firstkey-mcp] url = "https://mcp.firstkey.io/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"firstkeyhq-firstkey-mcp": {
"type": "remote",
"url": "https://mcp.firstkey.io/mcp",
"enabled": true
}
}
} openclaw mcp add firstkeyhq-firstkey-mcp --url 'https://mcp.firstkey.io/mcp' --transport streamable-http
mcp_servers:
firstkeyhq-firstkey-mcp:
url: "https://mcp.firstkey.io/mcp" {
"McpServers": {
"firstkeyhq-firstkey-mcp": {
"Transport": "http",
"Url": "https://mcp.firstkey.io/mcp"
}
}
} assistant mcp add firstkeyhq-firstkey-mcp -t streamable-http -u 'https://mcp.firstkey.io/mcp'
{
"mcpServers": {
"firstkeyhq-firstkey-mcp": {
"type": "http",
"url": "https://mcp.firstkey.io/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.
- 29 Sept 26 0
- Schema quality: 116 → 131 ▼ functional
- New tool “get_swap_route” functional
- 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
- 27 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 26 Sept 26 0
- Schema quality: pass → fail ▼ functional
- Server version: 0.1.0 → 0.2.0 functional
- New tool “get_swap_quote” 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
- 24 Sept 26 65
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 29 Sept 2026 · Probed https://mcp.firstkey.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=mcp.firstkey.io | CN=YE2,O=Let's Encrypt,C=US | 24 Sept 2026 | 23 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 526fc4602a16fdf3124d950255fba46a6d3 |
| SANs: mcp.firstkey.io | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of mcp.firstkey.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 57355 | 8 | Verified |
| firstkey.io. | 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=31536000; includeSubDomains |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.firstkey.io/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.firstkey.io/mcp | HTTPS enforced | 308 | https://mcp.firstkey.io/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 →
check_cycles ~32
Read an ICP principal's cycles balance on the cycles ledger.
| Name | Type | Req | Description |
|---|---|---|---|
| principal | string | yes | ICP principal (text form). |
No output schema declared.
No examples provided.
claim_faucet_grant ~75
Claim the one-time free 1T cycles grant from the FirstKey faucet for an agent principal. One claim per principal, ever. The grant lands on the cycles ledger and funds the agent's first canister deploy.
| Name | Type | Req | Description |
|---|---|---|---|
| agent | string | yes | The agent's ICP principal (text form) receiving the grant. |
No output schema declared.
No examples provided.
create_wallet ~65
Generate a fresh Ed25519 wallet for an AI agent: returns the ICP principal and the PKCS#8 PEM private key. The private key is returned exactly once over this call and is never stored anywhere. No signup, no on-chain registration — the keypair IS the wallet.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
deploy_site ~133
Deploy a static website for an agent: creates a canister on the Internet Computer, installs the FirstKey static host, uploads every file, and returns the live https URL. The agent is added as a controller of its site canister. One free deploy per agent principal, funded from the FirstKey deploy pool; files must fit in one call (total under ~1.4 MB decoded) — use deploy_upload_chunk for larger files.
| Name | Type | Req | Description |
|---|---|---|---|
| agent | string | yes | The agent's ICP principal — becomes a controller of the site canister. |
| files | array | yes | Files to publish. Include at least index.html. |
No output schema declared.
No examples provided.
deploy_upload_chunk ~207
Upload one chunk of a large file to an already-deployed agent site (for files that don't fit in a single deploy_site call). Chunks are appended in order; set is_last on the final chunk to publish the file.
| Name | Type | Req | Description |
|---|---|---|---|
| agent | string | yes | The agent's ICP principal (must own the site). |
| canister | string | yes | The site canister principal returned by deploy_site. |
| chunk_base64 | string | yes | Chunk bytes, base64-encoded. |
| chunk_index | integer | yes | 0-based chunk number. 0 starts a new upload for this path. |
| content_type | string | – | MIME type (only used on the first chunk). |
| is_last | boolean | yes | True on the final chunk: assembles and publishes the file. |
| path | string | yes | Site path, e.g. assets/video.mp4 |
| total_bytes | string | – | Total file size in bytes, as a decimal string (only used on the first chunk). |
No output schema declared.
No examples provided.
get_fuel_link ~69
Get the FirstKey Fuel payment link for a principal: a human pays by card (Stripe) and cycles land in the agent's wallet — the sovereign refuel path when the free faucet grant or deploy pool is exhausted.
| Name | Type | Req | Description |
|---|---|---|---|
| principal | string | yes | The agent's ICP principal to refuel. |
No output schema declared.
No examples provided.
get_swap_quote ~197
Get a live, read-only swap quote on ICPSwap (the deepest on-chain DEX on ICP): how much receive_token you would get for pay_amount of pay_token. No tokens move — this prices the intent; execution happens in the agent's own wallet/canister. Tokens can be symbols (ICP, ckUSDC, ckUSDT, ckBTC, ckETH) or ledger principals.
| Name | Type | Req | Description |
|---|---|---|---|
| fee | integer | – | Optional pool fee tier in hundredths of a bps (3000 = 0.3%). Defaults to trying 3000, then 10000, then 500. |
| pay_amount | string | yes | Amount to sell, in base units as a decimal string (e.g. "100000000" = 1 ICP). |
| pay_token | string | yes | Token to sell: symbol or ledger principal. |
| receive_token | string | yes | Token to buy: symbol or ledger principal. |
No output schema declared.
No examples provided.
get_swap_route ~238
Route a swap intent across ICPSwap: prices the direct pool and every two-hop path through ICP, ckUSDC, ckUSDT, ckBTC, and ckETH live on-chain, chains each leg's quoted output into the next leg's input, and returns the best route leg-by-leg. Read-only — no tokens move. Use this instead of get_swap_quote when a direct pool may be thin or missing.
| Name | Type | Req | Description |
|---|---|---|---|
| fee | integer | – | Optional pool fee tier in hundredths of a bps (3000 = 0.3%), applied to every leg. Defaults to trying 3000, then 10000, then 500 per leg. |
| max_hops | integer | – | 1 = direct path only, 2 = also try two-hop routes via intermediate tokens (default 2). |
| pay_amount | string | yes | Amount to sell, in base units as a decimal string (e.g. "100000000" = 1 ICP). |
| pay_token | string | yes | Token to sell: symbol or ledger principal. |
| receive_token | string | yes | Token to buy: symbol or ledger principal. |
No output schema declared.
No examples provided.
What is the FirstKey MCP server?
FirstKey is an MCP server listed in the public MCP registry as io.github.FirstKeyHQ/firstkey-mcp. FirstKey MCP: agent wallets, free cycles faucet, and one-command site deploys on ICP. This page covers its hosted endpoint (https://mcp.firstkey.io/mcp).
Is the FirstKey MCP server safe to use?
FirstKey scores 66 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 FirstKey MCP server expose?
FirstKey exposes 8 tools: create_wallet, claim_faucet_grant, deploy_site, deploy_upload_chunk, check_cycles, and 3 more. Their descriptions and schemas cost roughly 1,016 tokens of context every time the server is loaded.
Does the FirstKey MCP server require authentication?
No. We connected to FirstKey without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the FirstKey MCP server still maintained?
FirstKey is still listed as active in the MCP registry. We last reached this channel on 29 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.