haggl.ai: tool descriptions scored ai.haggl/haggl

tools/list taken: 2026-11-02 (UTC)
From: Official MCP Registry
Connected to: https://www.haggl.ai/api/mcp
Homepage: www.haggl.ai/protocol
Scoring rules: v2
Removal: support@forecall.dev

Scores, issues and names only

This page shows how haggl.ai (ai.haggl/haggl)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since.

servers/ai.haggl/haggl

Average score: 66.9 / 100Cloudy
Tools: 17
Near-identical descriptions: 0

Across the server

Minor
The server's instructions are 4294 characters. Claude Code reads only the first 2,048 by default (Codex 0.154.0 reads them whole). Put what the server is for first.instructions_long

Tools

haggl_hotel_cashback_add_trip

50 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 18 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Required identifiers whose description does not say where the value comes from: haggl_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_hotel_cashback_get

50 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 18 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
String arguments with no constraint or example: claim_id.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: haggl_id, claim_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_hotel_cashback_stay

55 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 18 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Minor
The description mentions none of its 3 or more arguments.params_not_in_description
Minor
Required identifiers whose description does not say where the value comes from: haggl_id, claim_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_get_my_offers

58 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 18 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Minor
Required identifiers whose description does not say where the value comes from: haggl_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_get_negotiation

58 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 18 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Minor
Required identifiers whose description does not say where the value comes from: session_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_hotel_cashback

62 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 25 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

No issues.

haggl_delete_haggl_id

63 / 100Cloudy

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Minor
Required identifiers whose description does not say where the value comes from: haggl_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_search_catalog

65 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 18 / 25
Return value: 15 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
String arguments with no constraint or example: vendor_id.loose_string_param
Minor
The description mentions none of its 3 or more arguments.params_not_in_description
Minor
Required identifiers whose description does not say where the value comes from: vendor_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_start_negotiation

65 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 18 / 25
Return value: 15 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
The description mentions none of its 3 or more arguments.params_not_in_description
Minor
Required identifiers whose description does not say where the value comes from: vendor_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_submit_offer

68 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 18 / 25
Return value: 15 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Required identifiers whose description does not say where the value comes from: session_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_request_haggl_id_confirmation

70 / 100Clear

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 25 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

No issues.

haggl_get_bids

72 / 100Clear

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 18 / 25
Return value: 15 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

Minor
Required identifiers whose description does not say where the value comes from: haggl_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_accept_offer

75 / 100Clear

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 15 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Minor
The description mentions none of its 3 or more arguments.params_not_in_description
Minor
Required identifiers whose description does not say where the value comes from: session_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_hotel_cashback_claim

77 / 100Clear

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 20 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

Minor
String arguments with no constraint or example: terms_version.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: haggl_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

haggl_list_vendors

80 / 100Clear

Purpose: 20 / 20
When to use: 20 / 20
Arguments: 25 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

No issues.

haggl_create_haggl_id

85 / 100Clear

Purpose: 20 / 20
When to use: 20 / 20
Arguments: 17 / 25
Return value: 8 / 15
Constraints and side effects: 10 / 10
Examples: 10 / 10

Minor
The description is long (491 words). It helps selection but costs steps and tokens.too_long
Minor
No `required` list, so every argument is optional.no_required

haggl_search_discounts

85 / 100Clear

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 18 / 25
Return value: 15 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

No issues.

What static scoring cannot tell

This score reads only the text of each description and schema: it says what is written, not what a model will do. Short tools whose names already say what they do, such as browser_close, score low here even when models use them well, and in our measurements current models chose the right tool in one step even from one-line descriptions, as long as the names and schemas differed. What the text cannot show, such as what happens over several steps and whether an added sentence helps or misleads, is what an evaluation measures, on the Pro and Team plans.

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