TrimCarbon
REMOTE · MCP.TRIMCARBON.COM
CO₂ estimates for general-aviation flying: by aircraft and hours, by fleet, or by fuel.
Available components
Last scanned (2 hours ago)
Scores higher than 91% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Health and Science
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 Security80
- 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
- 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 Usability84
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1159 tokens (~105/item across 11 items; 10 tools + 1 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management67
- Stability observed for 20 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
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 10 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 12 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
- Supports UI / widget rendering.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.
- 5 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.
- 3 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Nov 26 0
- Resource “estimate-card” now points somewhere else: ui://trimcarbon/estimate-7b68c8b4.html → ui://trimcarbon/estimate-793198bb.html security
- The server rewrote its instructions, which are the text every model session reads security
- Server version: 1.2.0 → 1.3.0 functional
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 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 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.
- 25 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.
- 23 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
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://mcp.trimcarbon.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=*.trimcarbon.com | CN=YR2,O=Let's Encrypt,C=US | 12 Sept 2026 | 11 Dec 2026 | RSA 2048 | SHA256-RSA | 56625fa0ff9f4dcd322d168c11f4548f375 |
| SANs: *.trimcarbon.com, trimcarbon.com | ||||||
| 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 mcp.trimcarbon.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| trimcarbon.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 |
|---|---|
| strict-transport-security | max-age=63072000 |
| content-security-policy | frame-ancestors 'none'; object-src 'none'; base-uri 'self'; form-action 'self'; upgrade-insecure-requests |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=(), browsing-topics=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.trimcarbon.com/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.trimcarbon.com/mcp | HTTPS enforced | 308 | https://mcp.trimcarbon.com/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 →
estimate_flight_hours Estimate CO₂ from flight hours ~121
Estimates the CO₂ from flying hours in one or more aircraft types: one row for a pilot, several rows for a fleet (a school, club or operator). CO₂ = hours × the type’s kg of CO₂ per flight hour, from its fuel flow at about 75% power. Types match by name, ICAO type designator or page slug.
| Name | Type | Req | Description |
|---|---|---|---|
| flights | array | yes | One row per aircraft type |
| period | string | – | "year" when the hours are per year, "total" for a one-off total |
| Name | Type | Req | Description |
|---|---|---|---|
| dataUpdated | string | yes | When the aircraft figures last changed |
| period | string | yes | "year" when the hours are per year, "total" for a one-off total |
| rows | array | yes | – |
| tonnes | number | yes | – |
| totalHours | number | yes | – |
| totalKg | number | yes | kg of CO₂, rounded |
No examples provided.
estimate_fuel_burn Estimate CO₂ from fuel burned ~102
Estimates the CO₂ from burning an amount of aviation fuel: avgas 100LL, mogas (motor gasoline) or Jet A, in US gallons, liters or kg. Uses the US EPA factor per US gallon and the fuel’s density for liters and kg.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | number | yes | How much fuel, in `unit` |
| fuel | string | yes | The fuel burned |
| unit | string | yes | US gallons, liters or kg |
| Name | Type | Req | Description |
|---|---|---|---|
| amount | number | yes | – |
| dataUpdated | string | yes | When the fuel figures last changed |
| fuel | string | yes | – |
| kg | number | yes | kg of CO₂, rounded |
| kgCo2PerUsGal | number | yes | – |
| pageUrl | string | yes | The page that explains the factor |
| tonnes | number | yes | – |
| unit | string | yes | – |
No examples provided.
get_api_impact Show my offset API impact ~61
For a company that uses the TrimCarbon offset API: how much CO₂ it has offset through the API, in total, in the last 30 days and by month, and its API access status. Needs the user to connect their TrimCarbon account.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| apiUrl | string|null | yes | – |
| kg | number | yes | kg of CO₂ bought through the API, live mode |
| kgLast30Days | number | yes | – |
| lastPurchase | string|null | yes | YYYY-MM-DD |
| months | array | yes | The last 12 months with purchases, newest first |
| purchases | number | yes | – |
| status | string | yes | – |
| testPurchases | number | yes | Simulated test-mode purchases, not counted |
No examples provided.
get_certificate Show one of my offset certificates ~111
Shows one of the signed-in user’s TrimCarbon certificates: kg of CO₂, holder, dates, projects with their registries and retirement serial numbers, and links to the public certificate and its PDF. Takes the certificate number (TC-7K2M-9QXF-4HJD) that list_my_offsets returns. Needs the user to connect their TrimCarbon account.
| Name | Type | Req | Description |
|---|---|---|---|
| certificate | string | yes | Certificate number, such as TC-7K2M-9QXF-4HJD |
| Name | Type | Req | Description |
|---|---|---|---|
| holder | string | yes | – |
| issuedOn | string|null | yes | YYYY-MM-DD |
| kg | number | yes | – |
| number | string | yes | – |
| pdfUrl | string|null | yes | – |
| placedOn | string | yes | YYYY-MM-DD |
| projects | array | yes | – |
| source | string | yes | – |
| status | string | yes | – |
| url | string|null | yes | The public certificate page |
No examples provided.
get_my_account Show my TrimCarbon account ~52
Shows the signed-in TrimCarbon account: email, current offset plan (monthly or yearly, kg of CO₂ per period, renewal date) and offset API access. Needs the user to connect their TrimCarbon account.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| accountUrl | string | yes | – |
| apiAccess | – | yes | – |
| string | yes | – | |
| language | string | yes | – |
| name | string|null | yes | – |
| plan | – | yes | – |
No examples provided.
get_my_impact Show my offset impact ~63
Shows how much CO₂ the signed-in user has offset with TrimCarbon: the total, what is still being processed, by source (one-time, subscription, offset API), by year, and the projects funded. Needs the user to connect their TrimCarbon account.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| byKind | array | yes | – |
| byYear | array | yes | – |
| firstOffset | string|null | yes | YYYY-MM-DD |
| impactUrl | string|null | yes | – |
| kgOffset | number | yes | kg of CO₂ in placed or certified orders |
| kgProcessing | number | yes | kg of CO₂ paid for and not yet ordered |
| lastOffset | string|null | yes | YYYY-MM-DD |
| orders | number | yes | Placed or certified orders |
| projects | array | yes | Projects of the issued certificates, most kg first |
No examples provided.
import_logbook Import a pilot logbook ~83
Opens a card where the user picks a logbook export from ForeFlight, Garmin Pilot or LogTen. The card reads the file on the user’s device, uploads nothing, and shows the flight hours and CO₂ by aircraft type. The user can then share those totals with this conversation. Use it when someone wants the CO₂ of their flying from their logbook.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| formats | array | yes | – |
| importerUrl | string|null | yes | The same importer on trimcarbon.com |
| methodUrl | string | yes | How the CO₂ per hour is worked out |
| mode | string | yes | – |
No examples provided.
list_my_offsets List my offsets ~66
Lists the signed-in user’s TrimCarbon offset orders, newest first: date, source, kg of CO₂, status and the public certificate link once issued. Needs the user to connect their TrimCarbon account.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | How many orders to list, newest first |
| Name | Type | Req | Description |
|---|---|---|---|
| offsets | array | yes | – |
| ordersUrl | string | yes | – |
| total | number | yes | All the user’s orders |
No examples provided.
quote_offset Price an offset ~156
Returns what TrimCarbon charges to offset an amount of CO₂: a one-time purchase in whole tonnes, and for yearly amounts the monthly and yearly plans. Each option has a link to continue on trimcarbon.com, where the user signs up and pays. This tool does not buy anything. It is for when the user asks what offsetting costs.
| Name | Type | Req | Description |
|---|---|---|---|
| aircraft | string | – | The main aircraft type, to prefill sign-up |
| hours | number | – | Hours per year, to prefill sign-up |
| kg | integer | yes | kg of CO₂ to offset, usually from an estimate tool |
| period | string | – | "year" for yearly CO₂ (plans apply), "total" for a one-off amount |
| Name | Type | Req | Description |
|---|---|---|---|
| contactUrl | string | yes | For amounts above the caps |
| currency | string | yes | – |
| kg | number | yes | – |
| monthly | – | yes | – |
| oneTime | object | yes | – |
| period | string | yes | – |
| yearly | – | yes | – |
No examples provided.
search_aircraft Search aircraft types ~124
Finds the aircraft types TrimCarbon has figures for, by name (e.g. "Cessna 172", "Skyhawk"), ICAO type designator (e.g. "C172", "PA28") or page slug. Returns each type with its kg of CO₂ per flight hour. The list covers about 60 general-aviation types, plus a few airliners (per passenger) and business jets.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Most types to return |
| query | string | yes | A name, ICAO type designator or page slug |
| Name | Type | Req | Description |
|---|---|---|---|
| aircraft | array | yes | – |
No examples provided.
How do I install the TrimCarbon MCP server?
TrimCarbon is a hosted endpoint at https://mcp.trimcarbon.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 · mcp.trimcarbon.com
claude mcp add --transport http com-trimcarbon-flight-emissions 'https://mcp.trimcarbon.com/mcp'
What is the TrimCarbon MCP server?
TrimCarbon is an MCP server listed in the public MCP registry as com.trimcarbon/flight-emissions. CO₂ estimates for general-aviation flying: by aircraft and hours, by fleet, or by fuel. This page covers its hosted endpoint (https://mcp.trimcarbon.com/mcp).
Is the TrimCarbon MCP server safe to use?
TrimCarbon scores 85 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 TrimCarbon MCP server expose?
TrimCarbon exposes 10 tools: search_aircraft, estimate_flight_hours, estimate_fuel_burn, import_logbook, quote_offset, and 5 more. Their descriptions and schemas cost roughly 939 tokens of context every time the server is loaded.
Does the TrimCarbon MCP server require authentication?
No. We connected to TrimCarbon without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the TrimCarbon MCP server still maintained?
TrimCarbon 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.