Paddle

paddle-rest-v1restprimary

77% coverage

Offload Valuejudged · weight 15 · Oct 5, 2026

Paddle is a merchant-of-record payments/billing API: it performs real side effects (charging customers, creating transactions, subscriptions, refunds/adjustments, credit notes, PDF invoices) and handles proprietary/compliance work an agent cannot simulate — tax-inclusive pricing previews, country/currency data, subscription proration previews, MRR and revenue metrics. None of this is reproducible via inference; it moves money and produces legally binding documents.

• https://developer.paddle.com/api-reference/overview

  Create a one-time charge for a subscription Pause a subscription Resume a paused subscription Preview an update to a subscription

• https://developer.paddle.com/api-reference/overview

  Create a one-time charge for a subscription Pause a subscription Resume a paused subscription Preview an update to a subscription

• https://developer.paddle.com/api-reference/overview

  Create a one-time charge for a subscription Pause a subscription Resume a paused subscription Preview an update to a subscription

Interaction Costmeasured · weight 15

How many tokens does it cost me just to TALK to this API to complete its category's canonical task?

Error Recoverabilityprobed · weight 15 · Oct 5, 2026

unknown_endpoint → HTTP 404, clarity 60/100 (field named: no, allowed values: yes, RFC 9457: no) · wrong_type → HTTP 400, clarity 80/100 (field named: yes, allowed values: yes, RFC 9457: no) · hallucinated_enum → HTTP 400, clarity 55/100 (field named: no, allowed values: yes, RFC 9457: no) · unknown_field → HTTP 200, clarity 65/100 (field named: yes, allowed values: no, RFC 9457: no) · missing_required_param → HTTP 400, clarity 55/100 (field named: no, allowed values: yes, RFC 9457: no) · idempotency_replay → HTTP 201, clarity 30/100 (field named: no, allowed values: no, RFC 9457: no)

• https://sandbox-api.paddle.com/products

  HTTP 403: {"error":{"type":"request_error","code":"forbidden","detail":"You aren't permitted to perform this request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/forbidden"},"meta":{"req

• https://sandbox-api.paddle.com/products/nonexistent_resource_xyz

  HTTP 404: {"error":{"type":"request_error","code":"invalid_url","detail":"URL called is invalid.","documentation_url":"https://developer.paddle.com/v1/errors/shared/invalid_url"},"meta":{"request_id":"947b5a91-

• https://sandbox-api.paddle.com/products?per_page=not_a_number

  HTTP 400: {"error":{"type":"request_error","code":"bad_request","detail":"Invalid request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/bad_request","errors":[{"field":"per_page","message

• https://sandbox-api.paddle.com/products?status=nonexistent_status

  HTTP 400: {"error":{"type":"request_error","code":"bad_request","detail":"Invalid request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/bad_request","errors":[{"field":"status[0]","messag

Doc Legibilitymeasured · weight 12 · Oct 5, 2026

text/markup ratio 3.3% (weight 30) · rendering without JavaScript undetermined (excluded from the calculation) (weight 25) · machine-readable spec: none found (weight 25) · llms.txt: https://developer.paddle.com/llms.txt (weight 10) · 0 runnable example(s) (weight 10). Weighted average over 75 points of available sub-criteria.

• https://developer.paddle.com/api-reference/
• https://developer.paddle.com/llms.txt

Auth Frictionmeasured · weight 10 · Oct 5, 2026

Authorization: Bearer <key>, verified by a successful call. One header, no ceremony.

• https://sandbox-api.paddle.com/products

  HTTP 403: {"error":{"type":"request_error","code":"forbidden","detail":"You aren't permitted to perform this request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/forbidden"},"meta":{"req

• https://sandbox-api.paddle.com/products/nonexistent_resource_xyz

  HTTP 404: {"error":{"type":"request_error","code":"invalid_url","detail":"URL called is invalid.","documentation_url":"https://developer.paddle.com/v1/errors/shared/invalid_url"},"meta":{"request_id":"947b5a91-

• https://sandbox-api.paddle.com/products?per_page=not_a_number

  HTTP 400: {"error":{"type":"request_error","code":"bad_request","detail":"Invalid request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/bad_request","errors":[{"field":"per_page","message

• https://sandbox-api.paddle.com/products?status=nonexistent_status

  HTTP 400: {"error":{"type":"request_error","code":"bad_request","detail":"Invalid request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/bad_request","errors":[{"field":"status[0]","messag

Safety & Reversibilityprobed · weight 10 · Oct 5, 2026

Two identical POSTs with the same Idempotency-Key header created TWO distinct resources (pro_01m45zrckjdjs4w0c66n58x0j1 then pro_01m45zrdj9vf5s2wd83xkr89pj). Every network timeout becomes a duplicate. (weight 35) · Isolated test environment available. (weight 25). Weighted average over 60 points of measured sub-criteria.

• https://sandbox-api.paddle.com/products

  HTTP 403: {"error":{"type":"request_error","code":"forbidden","detail":"You aren't permitted to perform this request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/forbidden"},"meta":{"req

• https://sandbox-api.paddle.com/products/nonexistent_resource_xyz

  HTTP 404: {"error":{"type":"request_error","code":"invalid_url","detail":"URL called is invalid.","documentation_url":"https://developer.paddle.com/v1/errors/shared/invalid_url"},"meta":{"request_id":"947b5a91-

• https://sandbox-api.paddle.com/products?per_page=not_a_number

  HTTP 400: {"error":{"type":"request_error","code":"bad_request","detail":"Invalid request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/bad_request","errors":[{"field":"per_page","message

• https://sandbox-api.paddle.com/products?status=nonexistent_status

  HTTP 400: {"error":{"type":"request_error","code":"bad_request","detail":"Invalid request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/bad_request","errors":[{"field":"status[0]","messag

Payload Efficiencyprobed · weight 8 · Oct 5, 2026

No discoverable field selection (tested fields, select, _fields, expand, properties): the agent swallows the whole resource. (weight 35) · 284 bytes per returned object (2 object(s) in the control response). (weight 25) · Cursor pagination detected ("has_more"). (weight 20) · One list envelope, standard. (weight 10) · No ETag. (Compression is not measurable: the runtime decompresses it and strips the header.) (weight 10). Weighted average over 100 points of measured sub-criteria.

• https://sandbox-api.paddle.com/products

  HTTP 403: {"error":{"type":"request_error","code":"forbidden","detail":"You aren't permitted to perform this request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/forbidden"},"meta":{"req

• https://sandbox-api.paddle.com/products/nonexistent_resource_xyz

  HTTP 404: {"error":{"type":"request_error","code":"invalid_url","detail":"URL called is invalid.","documentation_url":"https://developer.paddle.com/v1/errors/shared/invalid_url"},"meta":{"request_id":"947b5a91-

• https://sandbox-api.paddle.com/products?per_page=not_a_number

  HTTP 400: {"error":{"type":"request_error","code":"bad_request","detail":"Invalid request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/bad_request","errors":[{"field":"per_page","message

• https://sandbox-api.paddle.com/products?status=nonexistent_status

  HTTP 400: {"error":{"type":"request_error","code":"bad_request","detail":"Invalid request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/bad_request","errors":[{"field":"status[0]","messag

Task Atomicitymeasured · weight 6

How many calls for a single business intent?

Prior Knowledge Coveragemeasured · weight 5 · Oct 5, 2026

No successful run (0/2): interaction cost not measurable. Cold, without documentation: 0/1 succeeded.

Async Compatibilityprobed · weight 2 · Oct 5, 2026

POST /products returns an identifier, and GET /products/{id} reads it back (HTTP 200): the result can be retrieved by polling, with no server to host. Long-polling / SSE not probed, excluded from the weighting.

• https://sandbox-api.paddle.com/products

  HTTP 403: {"error":{"type":"request_error","code":"forbidden","detail":"You aren't permitted to perform this request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/forbidden"},"meta":{"req

• https://sandbox-api.paddle.com/products/nonexistent_resource_xyz

  HTTP 404: {"error":{"type":"request_error","code":"invalid_url","detail":"URL called is invalid.","documentation_url":"https://developer.paddle.com/v1/errors/shared/invalid_url"},"meta":{"request_id":"947b5a91-

• https://sandbox-api.paddle.com/products?per_page=not_a_number

  HTTP 400: {"error":{"type":"request_error","code":"bad_request","detail":"Invalid request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/bad_request","errors":[{"field":"per_page","message

• https://sandbox-api.paddle.com/products?status=nonexistent_status

  HTTP 400: {"error":{"type":"request_error","code":"bad_request","detail":"Invalid request.","documentation_url":"https://developer.paddle.com/v1/errors/shared/bad_request","errors":[{"field":"status[0]","messag

Tool-Native (MCP)binary · weight 2

Does the vendor publish an official, maintained MCP server?