Atlas entry
getcourier.dev
14 capabilities over MCP. The inventory is incomplete. First atlas observation.
14 tools. 7 only read. 5 change records, and 1 of those deletes or cancels. 2 send messages.◇
AI reading, beta. side-effects v1 on claude-haiku-5.5, calibrated on MCP (golden-3). Only readings above a measured precision count. Counts are tools, not calls: no tool was called.
AI summary · beta
7 capabilities are read as read-only: pricing, deposit_status, domain_status, wait_for_code, get_balance, list_messages and get_message.
4 capabilities are read as creating records: create_deposit, create_account, add_domain and create_inbox.
1 capability is read as deleting or cancelling records: delete_inbox.
2 capabilities are read as sending messages to people: verify_owner and send_message.
Written by claude-haiku-5.5 from the tool names and the readings on this page, then checked against them. It can still be wrong; it never lowers or hides a fact.
What an agent can do here
AI readings, beta · Readings on 14 of 14 MCP tools. 1 reads as deleting or cancelling, 2 read as sending messages.
Moves money
0
No tool read this way.
Deletes or cancels records
1 tool
delete_inbox0.89
Sends messages to people
2 tools
send_message0.90verify_owner0.84
Changes permissions
0
No tool read this way.
Runs code
0
No tool read this way.
Should ask a person first
0
No tool read this way.
What changed
First atlas observation. Atlas history
Look first
AI reading, beta: AI adds items here; it never removes one.
delete_inboxDeletes or cancels records · 0.89send_messageSends messages to people · 0.90verify_ownerSends messages to people · 0.84
Surfaces
5 protocols checked
| ARD | Not found | No document retrieved |
|---|---|---|
| A2A | invalid | 0 skills |
| MCP | Valid | 2025-06-18 · 14 tools · resources not advertised · prompts not advertised |
| OpenAPI | Not detected | 0 operations |
| WebMCP | Not detected | 0 declarative form tools · experimental |
Exact states and meaning
- ARDabsent
Exact state: not found · No document retrieved
The supported discovery location returned no matching document.
Not found does not prove the service exposes no such interface elsewhere.
Not observed / not fetched
- A2Afailed
Exact state: invalid · Revision 1.0 · 0 skills
InterfaceDelta retained the machine state “invalid” without assigning an additional meaning.
Not observed / not fetched
- MCPobserved
Exact state: valid · Revision 2025-06-18 · 14 tools · resources not advertised · prompts not advertised
A usable protocol document was retrieved and validated.
Directly observed
- OpenAPIabsent
Exact state: not detected · 0 operations
No endpoint was established from the evidence and scope that InterfaceDelta inspected.
Not detected does not prove that no endpoint exists.
Not observed / not fetched
- WebMCPabsent
Exact state: not detected · 0 declarative form tools · experimental
No named declarative WebMCP form tools were observed in the origin root HTML.
Script-registered tools and other pages are not observed, so this does not mean the site has no WebMCP tools.
Not observed / not fetched
Capabilities
Showing 14 of 14.
| Tool and inputs | ◇ AI reading, beta · confidence | ||||||
|---|---|---|---|---|---|---|---|
| Read as one of the six effects 3 AI only raises attention: these rows come first. | |||||||
| read_token | Deletes or cancels records 0.89 | Deletes or cancels records0.89 | |||||
| |||||||
| account_key, attachments, cc, html and 6 more | Sends messages to people 0.90 | Sends messages to people0.90 | |||||
| |||||||
| account_key, email* | Sends messages to people 0.84 | Sends messages to people0.84 | |||||
| |||||||
| Read as none of the six 11 Not a clearance. | |||||||
| account_key, domain* | Creates records0.84 | ||||||
| |||||||
| no inputs | Creates records0.89 | ||||||
| |||||||
| account_key, rail*, usd* | Creates records0.80 | ||||||
| |||||||
| account_key, alias, domain, local_part and 2 more | Creates records0.90 | ||||||
| |||||||
| account_key, deposit_id* | Reads only0.80 | ||||||
| |||||||
| account_key, domain* | Reads only0.85 | ||||||
| |||||||
| account_key | Reads only0.92 | ||||||
| |||||||
| message_id*, read_token | Reads only0.85 | ||||||
| |||||||
| after, limit, read_token | Reads only0.91 | ||||||
| |||||||
| no inputs | Reads only0.90 | ||||||
| |||||||
| after, read_token, timeout_seconds | Reads only0.82 | ||||||
| |||||||
Read as this effect No reading: unknown Not read as this effect◇ AI readings, beta. A zero is a count, not a clearance.
A2A skills 0+ observed
Inventory incomplete. The displayed count is a lower bound; missing items do not prove removal.
None recorded in this Passport.
Not observed in this Passport: MCP resources, MCP prompts, OpenAPI operations.
The atlas shows each capability by its plain identifier, inputs and declared sign-in. Publisher descriptions, paths, links and source evidence are not published here.
The comparison with the previous observation is shown only to the account that recorded it.
Atlas history
1 observation
- 14 capabilities · MCP 2025-06-18 · MCP endpoint validFirst observation
Fingerprint and versions
- Fingerprint
52eba836b65863670a8de3f5a88b9f3823df69891f69d3636bf05d008a8ff91c- Passport schema
- 0.5.0, passport-semantic-v4
- Consistency
- MCP_PROMPTS_ADVERTISEMENT_LIST: not applicable · MCP_RESOURCES_ADVERTISEMENT_LIST: not applicable · MCP_TOOLS_ADVERTISEMENT_LIST: match · OPENAPI_MCP_EXPLICIT_MAPPING: not applicable
Each class compares an observation with the previous atlas observation. Runs of unchanged observations are grouped. Struck values are what the previous observation recorded; inserted values are what this one recorded.
Declared and observed
No tools declare hints.
A disagreement is not a finding about the service: either side can be wrong. How we compare declarations and readings.
About this entry
dev.getcourier/getcourierListedOfficial MCP Registry · first listed 3 Nov 2026 · last listed 3 Nov 2026
Passive observations of a public interface listed in the Official MCP Registry. An observation does not verify security, ownership or compliance, and InterfaceDelta assigns no scores or rankings. Methodology · Report an inaccuracy · Ask for removal
Identity and snapshot
- Target key
sha256:d4ca41874f55b55bebf889e1deaf2b0d6a28678e62eb17d68bc07b6c296f9106- Locator SHA-256
562fb8e1c52d4ea6650fd1fa274bb65deba1bb94c71feb0552ea5a83ceaa29e4- Snapshot generated
- 6 Nov 2026, 03:03 UTC
The entry is one exact observed target, not a real-world service identity, and implies no ownership. Endpoint paths are not published; the locator hash lets an operator confirm their own URL.