Flowsimp
REMOTE · FLOWSIMP.COM
Turn Mermaid or an indented outline into an editable flowchart link. Completely free, no API key.
Available components
Last scanned (3 hours ago)
Scores higher than 54% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Design and Media
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
- 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
- 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 Usability78
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 401 tokens (~200/item across 2 items; 2 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 Management33
- Stability observed for 10 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 Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 2 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities40
- Spec-recency check failed: implements MCP spec 2025-03-26; the latest is 2026-07-28. See how to fix → Fail
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 Nov 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.
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 30 Oct 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.
- 29 Oct 26 +8
- Authorization: unverified → partial ▲ security
- Tool “create_flowchart” rewrote its description, which is the text the model reads security
- Tool “list_templates” rewrote its description, which is the text the model reads security
- Schema quality: pass → fail ▼ functional
- Schema quality: good → excellent functional
- “create_flowchart” reworded the description of “mode” cosmetic
- “create_flowchart” reworded the description of “text” cosmetic
- “create_flowchart” reworded the description of “title” cosmetic
- Tool “create_flowchart” changed its title: Create flowchart cosmetic
- Tool “list_templates” changed its title: List templates cosmetic
- 28 Oct 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 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 26 Oct 26 57
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 5 Nov 2026 · Probed https://flowsimp.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=flowsimp.com | CN=WE1,O=Google Trust Services,C=US | 22 Oct 2026 | 20 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | b6c82c74c77f2fab13457383bd292dfd |
| SANs: flowsimp.com, www.flowsimp.com, *.www.flowsimp.com | ||||||
| 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 insecure
Validation of flowsimp.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| flowsimp.com. | 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 |
|---|---|
| content-security-policy | frame-ancestors 'self' |
| x-frame-options | SAMEORIGIN |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://flowsimp.com/mcp | Verified | 200 | |
| http (plaintext) | http://flowsimp.com/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 →
create_flowchart Create flowchart ~286
Turn Mermaid flowchart or graph syntax, or an indented outline, into FlowSimp links. Use it when the steps already exist as text and someone needs a diagram they can view or edit. Returns JSON with shareUrl (a read-only /view# link), editUrl (opens the editor at /?board=), nodeCount, and connectionCount. An optional title is echoed in that JSON; it is not drawn on a shape. The diagram is compressed into the link, so nothing is stored and the call does not write to a database. Only flowchart and graph syntax are accepted. Other Mermaid types are refused. Text is limited to 16,000 characters and about 80 shapes.
| Name | Type | Req | Description |
|---|---|---|---|
| mode | string | – | Editor mode stored in the link. flowchart is the default. network opens the network editor instead. Parsing does not change with the mode. |
| text | string | yes | Diagram source. A Mermaid flowchart or graph (flowchart TD, rectangles in [], diamonds in {}, edge labels such as -->|Yes|), or an indented outline with one step per line. A trailing question mark be… |
| title | string | – | Optional label echoed in the JSON result. It is not placed on a shape and it is not stored. |
No output schema declared.
No examples provided.
list_templates List templates ~115
List every built-in FlowSimp template. Use it when a starter diagram is a better fit than generating one from text. Takes no arguments. Returns JSON with a templates array of id, label, and editUrl. The ids are swimlane, decision-tree, user-flow, org-chart, flowchart, process, network, mind-map, data-flow, algorithm, bpmn, onboarding, and approval. Each editUrl opens that template in the editor. The list is fixed, and the call does not store or change anything.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the Flowsimp MCP server?
Flowsimp is a hosted endpoint at https://flowsimp.com/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 · flowsimp.com
claude mcp add --transport http com-flowsimp-flowsimp 'https://flowsimp.com/mcp'
What is the Flowsimp MCP server?
Flowsimp is an MCP server listed in the public MCP registry as com.flowsimp/flowsimp. Turn Mermaid or an indented outline into an editable flowchart link. Completely free, no API key. This page covers its hosted endpoint (https://flowsimp.com/mcp).
Is the Flowsimp MCP server safe to use?
Flowsimp scores 69 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 Flowsimp MCP server expose?
Flowsimp exposes 2 tools: create_flowchart, list_templates. Their descriptions and schemas cost roughly 401 tokens of context every time the server is loaded.
Does the Flowsimp MCP server require authentication?
No. We connected to Flowsimp without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Flowsimp MCP server still maintained?
Flowsimp is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.