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Sats4AI - Bitcoin-Powered AI Tools

by io.github.cnghockey
OverviewDiscussionsAdmin

list_models

Read-onlyIdempotent

Discover available AI models with numeric IDs, tier labels, capabilities, and per-call pricing in sats. Call this before create_payment to find the right modelId for your task. Returns JSON array: [{ id, name, tier, description, price, isDefault, category }]. Models marked isDefault=true are used when you omit modelId from create_payment. Filter by category to narrow results to a specific tool. This tool is free, requires no payment, and is idempotent — safe to call repeatedly.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
categoryNoFilter by service category (matches tool names)

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / properties / category / enum
      Previous value: -[
-  "generate_text",
-  "generate_image",
-  "generate_video",
-  "animate_image",
-  "generate_music",
-  "text_to_speech",
-  "transcribe_audio",
-  "analyze_image",
-  "generate_3d_model",
-  "extract_document",
-  "convert_file",
-  "send_sms",
-  "place_call",
-  "ai_call",
-  "send_email",
-  "clone_voice",
-  "edit_image",
-  "merge_pdfs",
-  "convert_html_to_pdf",
-  "translate_text",
-  "extract_receipt",
-  "epub_to_audiobook",
-  "remove_background",
-  "upscale_image",
-  "restore_face",
-  "detect_nsfw",
-  "detect_objects",
-  "remove_object",
-  "colorize_image",
-  "deblur_image",
-  "estimate_depth"
-]New value: +[
+  "generate_text",
+  "generate_image",
+  "generate_video",
+  "animate_image",
+  "generate_music",
+  "text_to_speech",
+  "transcribe_audio",
+  "analyze_image",
+  "generate_3d_model",
+  "extract_document",
+  "convert_file",
+  "send_sms",
+  "place_call",
+  "ai_call",
+  "send_email",
+  "clone_voice",
+  "edit_image",
+  "merge_pdfs",
+  "convert_html_to_pdf",
+  "render_card",
+  "translate_text",
+  "extract_receipt",
+  "epub_to_audiobook",
+  "remove_background",
+  "upscale_image",
+  "restore_face",
+  "detect_nsfw",
+  "detect_objects",
+  "remove_object",
+  "colorize_image",
+  "deblur_image",
+  "estimate_depth"
+]
  2. Changed1 schema field changed
    • changedInput schema / properties / category / enum
      Previous value: -[
-  "generate_text",
-  "generate_image",
-  "generate_video",
-  "animate_image",
-  "generate_music",
-  "text_to_speech",
-  "transcribe_audio",
-  "analyze_image",
-  "generate_3d_model",
-  "extract_document",
-  "convert_file",
-  "send_sms",
-  "place_call",
-  "ai_call",
-  "send_email",
-  "clone_voice",
-  "edit_image",
-  "merge_pdfs",
-  "convert_html_to_pdf",
-  "translate_text",
-  "extract_receipt",
-  "epub_to_audiobook",
-  "remove_background",
-  "upscale_image",
-  "restore_face",
-  "detect_nsfw",
-  "detect_objects",
-  "remove_object",
-  "colorize_image",
-  "deblur_image",
-  "estimate_depth",
-  "style_transfer"
-]New value: +[
+  "generate_text",
+  "generate_image",
+  "generate_video",
+  "animate_image",
+  "generate_music",
+  "text_to_speech",
+  "transcribe_audio",
+  "analyze_image",
+  "generate_3d_model",
+  "extract_document",
+  "convert_file",
+  "send_sms",
+  "place_call",
+  "ai_call",
+  "send_email",
+  "clone_voice",
+  "edit_image",
+  "merge_pdfs",
+  "convert_html_to_pdf",
+  "translate_text",
+  "extract_receipt",
+  "epub_to_audiobook",
+  "remove_background",
+  "upscale_image",
+  "restore_face",
+  "detect_nsfw",
+  "detect_objects",
+  "remove_object",
+  "colorize_image",
+  "deblur_image",
+  "estimate_depth"
+]
  3. Changed1 schema field changed
    • changedInput schema / properties / category / enum
      Previous value: -[
-  "generate_text",
-  "generate_image",
-  "generate_video",
-  "animate_image",
-  "generate_music",
-  "text_to_speech",
-  "transcribe_audio",
-  "analyze_image",
-  "generate_3d_model",
-  "extract_document",
-  "convert_file",
-  "send_sms",
-  "place_call",
-  "ai_call",
-  "send_email",
-  "clone_voice",
-  "edit_image",
-  "merge_pdfs",
-  "convert_html_to_pdf",
-  "translate_text",
-  "extract_receipt",
-  "epub_to_audiobook",
-  "remove_background",
-  "upscale_image",
-  "restore_face",
-  "detect_nsfw",
-  "detect_objects",
-  "remove_object",
-  "colorize_image",
-  "deblur_image",
-  "estimate_depth"
-]New value: +[
+  "generate_text",
+  "generate_image",
+  "generate_video",
+  "animate_image",
+  "generate_music",
+  "text_to_speech",
+  "transcribe_audio",
+  "analyze_image",
+  "generate_3d_model",
+  "extract_document",
+  "convert_file",
+  "send_sms",
+  "place_call",
+  "ai_call",
+  "send_email",
+  "clone_voice",
+  "edit_image",
+  "merge_pdfs",
+  "convert_html_to_pdf",
+  "translate_text",
+  "extract_receipt",
+  "epub_to_audiobook",
+  "remove_background",
+  "upscale_image",
+  "restore_face",
+  "detect_nsfw",
+  "detect_objects",
+  "remove_object",
+  "colorize_image",
+  "deblur_image",
+  "estimate_depth",
+  "style_transfer"
+]
  4. Changed1 schema field changed
    • changedInput schema / properties / category / enum
      Previous value: -[
-  "generate_text",
-  "generate_image",
-  "generate_video",
-  "animate_image",
-  "generate_music",
-  "text_to_speech",
-  "transcribe_audio",
-  "analyze_image",
-  "generate_3d_model",
-  "extract_document",
-  "convert_file",
-  "send_sms",
-  "place_call",
-  "ai_call",
-  "send_email",
-  "clone_voice",
-  "edit_image",
-  "merge_pdfs",
-  "convert_html_to_pdf",
-  "translate_text",
-  "extract_receipt",
-  "epub_to_audiobook",
-  "remove_background",
-  "upscale_image",
-  "restore_face",
-  "detect_nsfw",
-  "detect_objects",
-  "remove_object",
-  "colorize_image",
-  "deblur_image"
-]New value: +[
+  "generate_text",
+  "generate_image",
+  "generate_video",
+  "animate_image",
+  "generate_music",
+  "text_to_speech",
+  "transcribe_audio",
+  "analyze_image",
+  "generate_3d_model",
+  "extract_document",
+  "convert_file",
+  "send_sms",
+  "place_call",
+  "ai_call",
+  "send_email",
+  "clone_voice",
+  "edit_image",
+  "merge_pdfs",
+  "convert_html_to_pdf",
+  "translate_text",
+  "extract_receipt",
+  "epub_to_audiobook",
+  "remove_background",
+  "upscale_image",
+  "restore_face",
+  "detect_nsfw",
+  "detect_objects",
+  "remove_object",
+  "colorize_image",
+  "deblur_image",
+  "estimate_depth"
+]
  5. First observed

TDQS

A4.4/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Even with readOnlyHint and idempotentHint annotations already present, the description adds meaningful behavioral facts: it is free and requires no payment, it returns a JSON array with a specific shape, and models with isDefault=true affect create_payment when modelId is omitted. It also reassures that repeated calls are safe, extending the idempotent hint with practical guidance. No annotation is contradicted.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is densely informative with a clear front-loaded purpose and a logical flow: what it returns, when to call it, how the default flag behaves, how to filter, and cost/safety notes. Each sentence contributes value, though 'free' and 'requires no payment' are mildly redundant and the default-model detail could be considered extra context for create_payment rather than list_models itself.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple read-only tool with one optional parameter and no output schema, the description covers everything an agent needs: return format, exact fields, meaning of isDefault, category filtering, and cost/ree behavior. It fully prepares the agent to call correctly and interpret results, making further documentation unnecessary.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and the single optional category parameter is already described as a filter matching tool names. The description adds only a slight clarification that filtering narrows results to a specific tool, which is a near paraphrase rather than substantive new semantics. The schema carries the parameter heavy lifting, so a baseline of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a specific verb ('Discover') with a clear resource ('available AI models') and enumerates the exact attributes returned: numeric IDs, tier labels, capabilities, and per-call pricing. It distinguishes itself from siblings like get_model_pricing by framing the tool as the discovery/preparation step for create_payment. An agent can confidently understand what this tool does without ambiguity.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly says to call this before create_payment to find the right modelId, and explains filtering by category to narrow results to a specific tool. It provides clear usage context but does not explicitly contrast with overlapping siblings such as get_model_pricing, so it stops short of a full when/when-not alternatives statement.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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