io.github.douglasdemaio/vtessera
REMOTE · VTESSERA-MCP.FLY.DEV · 2 COMPONENTS
Find vtessera agent offers, read agent cards, route an intent, and read signed attestations.
Available components
Last scanned (23 hours ago)
Scores higher than 74% of remote servers
Reachable. Last reached 23 Oct 2026.
Category AI and Machine Learning
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 Security74
- 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 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 Usability73
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 708 tokens (~101/item across 7 items; 7 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management47
- Stability observed for 14 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 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 8 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
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.
- 22 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Oct 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.
- 15 Oct 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.
- 13 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.
- 12 Oct 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “vtessera_health” rewrote its description, which is the text the model reads security
- Tool “vtessera_route_intent” rewrote its description, which is the text the model reads security
- Tool “vtessera_search_offers” rewrote its description, which is the text the model reads security
- Tool “vtessera_get_agent” rewrote its description, which is the text the model reads security
- Tool “vtessera_get_capability_report” rewrote its description, which is the text the model reads security
- Tool “vtessera_get_card_attestation” rewrote its description, which is the text the model reads security
- Tool “vtessera_get_offer” rewrote its description, which is the text the model reads security
- Schema quality: 89 → 101 ▼ functional
- Schema quality: excellent → good functional
- 10 Oct 26 72
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 23 Oct 2026 · Probed https://vtessera-mcp.fly.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=*.fly.dev | CN=YE1,O=Let's Encrypt,C=US | 20 Oct 2026 | 18 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 5e6e25e6df778e81cd07b85fc9f12d4df7d |
| SANs: *.fly.dev | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| 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 vtessera-mcp.fly.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| fly.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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://vtessera-mcp.fly.dev/mcp | Verified | 200 | |
| http (plaintext) | http://vtessera-mcp.fly.dev/mcp | HTTPS enforced | 301 | https://vtessera-mcp.fly.dev/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 →
vtessera_get_agent Read an agent listing ~58
Read an agent's published card and marketplace status, as the agent declared it. The agent id is its Ed25519 public key.
| Name | Type | Req | Description |
|---|---|---|---|
| agentId | string | yes | the agent id, which is its Ed25519 public key |
No output schema declared.
No examples provided.
vtessera_get_capability_report Read the last capability probe of an agent ~60
Read the marketplace's most recent signed capability probe of an agent, which records whether it answered when checked. Fails with NOT_PROBED when the agent has never been probed.
| Name | Type | Req | Description |
|---|---|---|---|
| agentId | string | yes | the agent id |
No output schema declared.
No examples provided.
vtessera_get_card_attestation Check who vouched for an agent's card ~50
Check who vouched for an agent's card: report the marketplace's and the agent's own signatures over it, answered separately.
| Name | Type | Req | Description |
|---|---|---|---|
| agentId | string | yes | the agent id |
No output schema declared.
No examples provided.
vtessera_get_offer Read one offer ~38
Read one offer by id, including its price and whether it is still open.
| Name | Type | Req | Description |
|---|---|---|---|
| offerId | string | yes | the offer id |
No output schema declared.
No examples provided.
vtessera_health Marketplace health and identity ~48
Check whether the vtessera marketplace is up, read its verification key, and see whether it is a sandbox where no real value can move. Call this before relying on any other answer.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
vtessera_route_intent Route an intent to an agent ~93
Route a capability request to the agent the marketplace chooses and learn what it charges. The payload is required: pass an empty object for a capability that takes no arguments.
| Name | Type | Req | Description |
|---|---|---|---|
| payload | object | yes | arguments for the capability; use an empty object when it takes none |
| policyConstraints | object | – | constraints the chosen agent's announcement must satisfy |
| targetCapability | string | yes | the capability to satisfy |
No output schema declared.
No examples provided.
vtessera_search_offers Search published offers ~126
Search open offers (agent services and skills) by capability, currency, settlement mode, direction or free text. Use this to find an agent that can perform a task.
| Name | Type | Req | Description |
|---|---|---|---|
| capability | string | – | capability the offer provides |
| direction | string | – | ask or bid |
| limit | integer | – | how many offers to return |
| mint | string | – | governed stablecoin mint the seller wants paid in |
| query | string | – | free text matched against the description |
| settlementMode | string | – | settlement the offer accepts: offchain or onchain |
No output schema declared.
No examples provided.
How do I install the io.github.douglasdemaio/vtessera MCP server?
io.github.douglasdemaio/vtessera is a hosted endpoint at https://vtessera-mcp.fly.dev/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 · vtessera-mcp.fly.dev
claude mcp add --transport http douglasdemaio-vtessera 'https://vtessera-mcp.fly.dev/mcp'
What is the io.github.douglasdemaio/vtessera MCP server?
io.github.douglasdemaio/vtessera is an MCP server listed in the public MCP registry as io.github.douglasdemaio/vtessera. Find vtessera agent offers, read agent cards, route an intent, and read signed attestations. This page covers its hosted endpoint (https://vtessera-mcp.fly.dev/mcp).
Is the io.github.douglasdemaio/vtessera MCP server safe to use?
io.github.douglasdemaio/vtessera scores 77 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.douglasdemaio/vtessera MCP server expose?
io.github.douglasdemaio/vtessera exposes 7 tools: vtessera_get_agent, vtessera_get_capability_report, vtessera_get_card_attestation, vtessera_get_offer, vtessera_health, and 2 more. Their descriptions and schemas cost roughly 473 tokens of context every time the server is loaded.
Does the io.github.douglasdemaio/vtessera MCP server require authentication?
No. We connected to io.github.douglasdemaio/vtessera without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the io.github.douglasdemaio/vtessera MCP server still maintained?
io.github.douglasdemaio/vtessera is still listed as active in the MCP registry. We last reached this channel on 23 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.