io.github.spfunctions/simplefunctions
REMOTE · SIMPLEFUNCTIONS.DEV · 2 COMPONENTS · SCANNED SEP 24
Calibrated world model for AI agents. 40 tools: world state, markets, trading. Kalshi + Polymarket.
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 108 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 Usability78
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 9728 tokens (~90/item across 108 items; 108 tools + 0 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 Coverage95
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 86% of tool parameters carry a description.Partial
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; "close_position" implies "delete" 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 108 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 io.github.spfunctions/simplefunctions MCP server?
io.github.spfunctions/simplefunctions is a hosted endpoint at https://simplefunctions.dev/api/mcp/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 · simplefunctions.dev
claude mcp add --transport http spfunctions-simplefunctions 'https://simplefunctions.dev/api/mcp/mcp'
{
"mcpServers": {
"spfunctions-simplefunctions": {
"url": "https://simplefunctions.dev/api/mcp/mcp"
}
}
} {
"servers": {
"spfunctions-simplefunctions": {
"type": "http",
"url": "https://simplefunctions.dev/api/mcp/mcp"
}
}
} [mcp_servers.spfunctions-simplefunctions] url = "https://simplefunctions.dev/api/mcp/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"spfunctions-simplefunctions": {
"type": "remote",
"url": "https://simplefunctions.dev/api/mcp/mcp",
"enabled": true
}
}
} openclaw mcp add spfunctions-simplefunctions --url 'https://simplefunctions.dev/api/mcp/mcp' --transport streamable-http
mcp_servers:
spfunctions-simplefunctions:
url: "https://simplefunctions.dev/api/mcp/mcp" {
"McpServers": {
"spfunctions-simplefunctions": {
"Transport": "http",
"Url": "https://simplefunctions.dev/api/mcp/mcp"
}
}
} assistant mcp add spfunctions-simplefunctions -t streamable-http -u 'https://simplefunctions.dev/api/mcp/mcp'
{
"mcpServers": {
"spfunctions-simplefunctions": {
"type": "http",
"url": "https://simplefunctions.dev/api/mcp/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.
- 23 Sept 26 +40
- Injection markers: unverified → pass ▲ security
- Stability: fail → pass ▲ security
- Authorization: Authorisation not fully verified: no authorisation is required to call this server, and 108 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
- Schema quality: unverified → fail ▼ functional
- Schema quality: unverified → excellent ▲ functional
- Tool coverage: unverified → 100 ▲ functional
- Schema quality: unverified → pass ▲ functional
- This server's schema is too large to store in full, so we cannot compare its tools day to day functional
- 22 Sept 26 −40
- Tool safety: pass → unverified ▼ security
- Stability: 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
- Schema quality: excellent → unverified ▼ functional
- Schema quality: fail → unverified ▼ functional
- Schema quality: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- This server's schema is too large to store in full, so we cannot compare its tools day to day functional
- 26 Aug 26 79
- 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
- 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
- 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
- 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
- 26 Jul 26 0
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 24 Sept 2026 · Probed https://simplefunctions.dev/api/mcp/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=simplefunctions.dev | CN=YR2,O=Let's Encrypt,C=US | 20 Sept 2026 | 19 Dec 2026 | RSA 2048 | SHA256-RSA | 64c621fac10c74d37c33bfe4db25c2243aa |
| SANs: simplefunctions.dev | ||||||
| CN=YR2,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | 4ebd24947e24d394802d84a52fd5b319 |
| 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 |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of simplefunctions.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| simplefunctions.dev. | 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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://simplefunctions.dev/api/mcp/mcp | Verified | 200 | |
| http (plaintext) | http://simplefunctions.dev/api/mcp/mcp | HTTPS enforced | 308 | https://simplefunctions.dev/api/mcp/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 →
update_nodes ~146
Directly update causal tree node probabilities — zero LLM cost, instant. Use when the agent observes a confirmed fact (e.g. "CPI came in at 3.2%") and wants to reflect it immediately. Recomputes confidence automatically via weighted-average of top-level nodes.
| Name | Type | Req | Description |
|---|---|---|---|
| apiKey | string | yes | SimpleFunctions API key. Get one at https://simplefunctions.dev/dashboard/keys |
| lock | array | – | Advisory pin — tells future evaluations that these nodes are well-supported. Evidence can still revise them; pinning no longer makes a node permanent. |
| thesisId | string | yes | Thesis ID |
| updates | array | yes | Node updates to apply |
No output schema declared.
No examples provided.
update_position ~132
Update a position: current price, edge, size, status (open→closed). Use to mark positions as closed or update tracking data.
| Name | Type | Req | Description |
|---|---|---|---|
| apiKey | string | yes | SimpleFunctions API key. Get one at https://simplefunctions.dev/dashboard/keys |
| currentPrice | number | – | Current market price in cents |
| edge | number | – | Current edge in cents |
| positionId | string | yes | Position ID |
| rationale | string | – | Updated rationale |
| size | number | – | Updated size |
| status | string | – | open or closed |
| thesisId | string | yes | Thesis ID |
No output schema declared.
No examples provided.
update_strategy ~178
Advanced: Update a trading strategy (stop loss, take profit, status).
| Name | Type | Req | Description |
|---|---|---|---|
| apiKey | string | yes | SimpleFunctions API key. Get one at https://simplefunctions.dev/dashboard/keys |
| entryAbove | number | – | New entry above trigger (cents) |
| entryBelow | number | – | New entry below trigger (cents) |
| priority | number | – | New priority |
| rationale | string | – | Updated rationale |
| softConditions | string | – | Updated soft conditions |
| status | string | – | New status: active|watching|executed|cancelled|review |
| stopLoss | number | – | New stop loss (cents) |
| strategyId | string | yes | Strategy ID (UUID) |
| takeProfit | number | – | New take profit (cents) |
| thesisId | string | yes | Thesis ID |
No output schema declared.
No examples provided.
update_thesis ~118
Update thesis metadata: title, lifecycle status (active/paused/archived), webhookUrl. Use configure_heartbeat.paused for runtime heartbeat pause/resume.
| Name | Type | Req | Description |
|---|---|---|---|
| apiKey | string | yes | SimpleFunctions API key. Get one at https://simplefunctions.dev/dashboard/keys |
| status | string | – | New status: active, paused, archived |
| thesisId | string | yes | Thesis ID |
| title | string | – | New thesis title |
| webhookUrl | string | – | Webhook URL for confidence change notifications (HTTPS only) |
No output schema declared.
No examples provided.
what_if ~104
Scenario analysis: "what if OPEC cuts production?" Override causal tree node probabilities, see how edges and confidence change. Zero LLM cost, instant.
| Name | Type | Req | Description |
|---|---|---|---|
| apiKey | string | yes | SimpleFunctions API key. Get one at https://simplefunctions.dev/dashboard/keys |
| overrides | object | yes | Node probability overrides, e.g. {"n1": 0.1, "n3": 0.2} |
| thesisId | string | yes | Thesis ID |
No output schema declared.
No examples provided.
x_account ~86
Advanced: Recent posts from a specific X/Twitter account.
| Name | Type | Req | Description |
|---|---|---|---|
| apiKey | string | yes | SimpleFunctions API key. Get one at https://simplefunctions.dev/dashboard/keys |
| hours | number | – | Hours to look back (default 24) |
| limit | number | – | Max posts (default 20) |
| username | string | yes | X/Twitter username (without @) |
No output schema declared.
No examples provided.
x_news ~72
Advanced: X/Twitter news stories with headlines, summaries, and related tickers.
| Name | Type | Req | Description |
|---|---|---|---|
| apiKey | string | yes | SimpleFunctions API key. Get one at https://simplefunctions.dev/dashboard/keys |
| limit | number | – | Max stories (default 10) |
| query | string | yes | News search query |
No output schema declared.
No examples provided.
x_volume ~85
Advanced: X/Twitter discussion volume trend — timeseries, velocity, peak activity.
| Name | Type | Req | Description |
|---|---|---|---|
| apiKey | string | yes | SimpleFunctions API key. Get one at https://simplefunctions.dev/dashboard/keys |
| granularity | string | – | Timeseries granularity |
| hours | number | – | Hours to look back (default 72) |
| query | string | yes | Search query |
No output schema declared.
No examples provided.
What is the io.github.spfunctions/simplefunctions MCP server?
io.github.spfunctions/simplefunctions is an MCP server listed in the public MCP registry as io.github.spfunctions/simplefunctions. Calibrated world model for AI agents. 40 tools: world state, markets, trading. Kalshi + Polymarket. This page covers its hosted endpoint (https://simplefunctions.dev/api/mcp/mcp).
Is the io.github.spfunctions/simplefunctions MCP server safe to use?
io.github.spfunctions/simplefunctions scores 79 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 io.github.spfunctions/simplefunctions MCP server expose?
io.github.spfunctions/simplefunctions exposes 108 tools: get_context, list_theses, inject_signal, trigger_evaluation, scan_markets, and 103 more. Their descriptions and schemas cost roughly 9,728 tokens of context every time the server is loaded.
Does the io.github.spfunctions/simplefunctions MCP server require authentication?
No. We connected to io.github.spfunctions/simplefunctions without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the io.github.spfunctions/simplefunctions MCP server still maintained?
io.github.spfunctions/simplefunctions is still listed as active in the MCP registry. We last reached this channel on 24 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.