ErrLookup › github/github-mcp-server

github/github-mcp-server

GitHub's official MCP Server · Go · 133 source files

Analyzed at 0ea1f775a7 on 2026-08-15. 291 documented errors.

Code / Message	Type	Severity	Tags
App not connected	exception	error	oauth, authentication, http, mcp, middleware
authentication required: set GITHUB_PERSONAL_ACCESS_TOKEN, c	validation	error	oauth, configuration, metadata, http, ghes
GitHub App authentication and GITHUB_PERSONAL_ACCESS_TOKEN a	validation	warning	go, json, serialization, defensive
GitHub App authentication and OAuth login (--oauth-client-id	validation	error	go, github, authentication, configuration
GitHub App authentication requires a private key: set GITHUB	validation	warning	go, network, io, transient
GitHub App ID or client ID is required (GITHUB_APP_ID)	validation	warning	go, json, serialization, defensive
GitHub App installation ID is required (GITHUB_APP_INSTALLAT	validation	error	go, github, authentication, configuration
GitHub App private key is required (GITHUB_APP_PRIVATE_KEY_P	validation	warning	go, network, io, transient
GitHub App REST base URL is required	validation	error	go, github, authentication, configuration
no PEM block found in private key	exception	warning	go, network, io, transient
installation token response did not contain a token	exception	error	go, pagination, base64, validation
installation token response did not contain an expiry	exception	error	go, pagination, validation, cursor-format
OAuth callback listener could not bind	exception	error	go, pagination, validation, cursor-format
authorization prompt has expired	exception	error	go, validation, user-input, blame
authorization did not complete	exception	error	go, validation, user-input, blame
provide either 'visible_fields' or 'visible_field_names', no	validation	error	go, validation, path-traversal, blame
response did not include the deleted project view	exception	error	go, validation, user-input, blame
owner is required	validation	error	go, graphql, authentication, configuration
repo is required	validation	warning	go, json, serialization, defensive
owner not specified	validation	error	go, github, authentication, configuration
failed to get repositories	exception	warning	github-api, search, completions, mcp, rate-limit
owner or repo not specified	validation	warning	completions, mcp, validation, argument-resolution
failed to get file tree	exception	warning	completions, mcp, git-tree, large-repos, github-api
bad request	error_code	error	http, authentication, authorization-header, token, sentinel-error
unknown tools specified in WithTools	validation	error	configuration, tool-names, builder, validation, inventory
failed to read docs file: %w	console	warning	codegen, docs, file-io, ci
failed to generate docs for %s: %w	console	warning	codegen, docs, ci, automation
failed to read README.md: %w	console	warning	codegen, docs, readme, file-io
failed to write README.md: %w	console	warning	codegen, docs, readme, file-io, permissions
failed to read docs file: %w	console	warning	codegen, docs, file-io, remote-server
markers not found: %s / %s	console	warning	codegen, docs, markers, markdown, ci
failed to write deprecated aliases docs: %w	console	warning	codegen, docs, file-io, permissions, tool-renaming
failed to unmarshal toolsets: %w	validation	error	configuration, viper, cli, type-mismatch, startup
failed to unmarshal tools: %w	validation	error	configuration, viper, cli, type-mismatch, startup
failed to build inventory: %w	validation	error	configuration, tool-names, inventory, cli, startup
failed to unmarshal toolsets: %w	validation	error
failed to unmarshal tools: %w	validation	error
failed to unmarshal exclude-tools: %w	validation	error
failed to unmarshal features: %w	validation	error
failed to unmarshal oauth-scopes: %w	validation	error
failed to parse host for GitHub App authentication: %w	validation	error
failed to resolve REST URL for GitHub App authentication: %w	validation	error
failed to configure GitHub App authentication: %w	validation	error
reading GitHub App private key file: %w	validation	error
--stdio-server-cmd is required	validation	error
failed to build JSON-RPC request: %w	console	error
error executing server command: %w	console	error
%s must be one of: %s	validation	error
error parsing JSON for %s: %w	validation	error
failed to generate random ID: %w	console	error
github authorization failed: %w	exception	error
failed to get base REST URL: %w	exception	error
failed to get upload URL: %w	exception	error
failed to get GraphQL URL: %w	exception	error
failed to get Raw URL: %w	exception	error
failed to create REST client: %w	exception	error
failed to create raw client: %w	exception	error
failed to parse API host: %w	exception	error
failed to classify API host: %w	exception	error
failed to create GitHub clients: %w	exception	error
failed to create observability exporters: %w	exception	error
failed to build inventory: %w	exception	error
failed to create GitHub MCP server: %w	exception	error
choose exactly one authentication mode: a static Token, OAut	validation	error
failed to open log file: %w	exception	error
failed to create MCP server: %w	exception	error
error running server: %w	exception	error
parsing private key (want PKCS#1 or PKCS#8 RSA): %w	validation	error
private key is %T, want an RSA key	validation	error	crypto, rsa, github-app, configuration, startup
signing JWT: %w	exception	error	crypto, jwt, rsa, environment, rare
building installation token URL: %w	exception	error	configuration, url, github-enterprise, startup
creating installation token request: %w	exception	error	configuration, url, validation, startup
requesting installation token: %w	http	error	network, proxy, tls, timeout, github-enterprise
installation token request failed: %s (reading response: %w)	http	error	network, proxy, http, truncated-response, rare
installation token request failed: %s: %s	http	error	github-api, authentication, configuration, http-status
decoding installation token response: %w	http	error	proxy, json, network, github-enterprise, http
invalid GitHub App private key: %w	validation	error	configuration, pem, github-app, startup, secrets
starting callback listener on %s: %w	exception	error	network, port, configuration, startup, oauth
callback server: %w	exception	error	http-server, network, file-descriptors, rare, oauth
authorization failed: %s	http	warning	oauth, authorization, user-action, github-api
state mismatch (possible CSRF)	validation	error	oauth, csrf, security, state, user-action
no authorization code in callback	validation	warning	oauth, callback, user-action, http
unsupported platform: %s	validation	warning	platform, browser, oauth, portability
OAuth callback port %d is not available; another process may	validation	error	oauth, port, security, configuration, startup
%w: %w	exception	warning	oauth, port, fallback, network, internals
exchanging authorization code: %w	http	error	oauth, pkce, token-exchange, configuration, user-action
requesting device code: %w	http	error	oauth, device-flow, network, configuration, github-enterprise
awaiting device authorization: %w	http	error	oauth, device-flow, user-action, timeout, token-exchange
failed to read log content: %w	http	error	network, streaming, io, ring-buffer, go
%s: %w	http	error	github-api, rest, error-wrapping, auth, go
unexpected status %d: %s	http	error	http-status, github-api, proxy, go
failed to marshal response: %w	exception	error	json, serialization, github-actions, logs, go
failed to get job logs for job %d: %w	exception	error	github-actions, logs, permissions, rate-limit, go
failed to download log content for job %d: %w	exception	error	network, download, signed-url, logs, go
failed to download logs: %w	exception	error	network, http, proxy, tls, go
failed to download logs: HTTP %d	http	error	http-status, signed-url, expiry, logs, go
failed to process log content: %w	exception	error	io, streaming, retry, logs, go
failed to get GitHub client: %w	exception	error	configuration, auth, token, ghes, go
failed to marshal workflow: %w	exception	error	json, serialization, workflow, go
failed to marshal workflow run: %w	exception	error	json, serialization, workflow-run, go
failed to marshal workflow job: %w	exception	error	json, serialization, workflow-job, go
failed to marshal workflows: %w	exception	error	json, serialization, workflow, pagination, go
failed to marshal workflow runs: %w	exception	error	go, json, serialization, github-actions, workflow-runs
failed to marshal workflow jobs: %w	exception	error	go, json, serialization, github-actions, workflow-jobs
failed to get GitHub client: %w	exception	error	go, authentication, graphql, copilot, configuration
failed to update issue with agent assignment: %w	exception	error	graphql, copilot, permissions, issues, github-api
failed to unmarshal JSON text: %w	exception	error	go, json, csv, output-format, encoding
failed to write CSV header: %w	exception	info	go, csv, encoding, defensive-code, memory
failed to write CSV row: %w	exception	info	go, csv, encoding, defensive-code, memory
failed to flush CSV: %w	exception	info	go, csv, encoding, defensive-code, memory
no token info in context	exception	critical	go, authentication, context, configuration, server-setup
failed to get base REST URL: %w	exception	error	go, configuration, dependency-injection, github-api, url-parsing
failed to get upload URL: %w	exception	error	go, configuration, dependency-injection, uploads, github-api
failed to create REST client: %w	exception	error	go, url-parsing, go-github, client-construction
failed to get GraphQL URL: %w	exception	error	go, configuration, graphql, dependency-injection
failed to get Raw URL: %w	exception	error	go, configuration, raw-content, dependency-injection
failed to create raw client: %w	exception	error	go, url-parsing, raw-content, client-construction
failed to marshal discussions: %w	exception	warning	go, json-marshal, defensive-code, discussions
failed to marshal discussion: %w	exception	warning	go, json-marshal, defensive-code, discussions
failed to marshal comments: %w	exception	warning	go, json-marshal, defensive-code, discussions
failed to marshal comment: %w	exception	warning	go, json-marshal, defensive-code, discussions, mutations
commentNodeID cannot be blank	validation	warning	go, input-validation, discussions, tool-parameters
failed to marshal discussion categories: %w	exception	warning	go, json-marshal, defensive-code, discussions
failed to marshal response: %w	exception	warning	go, json-marshal, defensive-code, git, trees
failed to read response body: %w	exception	error	go, network, http, transient, issue-dependencies
failed to get issue ID: %w	exception	error	go, graphql, github-api, auth, rate-limit
each issue_fields item must be an object	validation	error	go, validation, issue-fields, mcp
issue_fields must be an array	validation	error	go, validation, issue-fields, mcp
field_name is required for each issue_fields item	validation	error	go, validation, issue-fields, mcp
value cannot be null for field %q	validation	error	go, validation, issue-fields, json, mcp
issue field %q cannot specify 'delete' together with 'value'	validation	error	go, validation, issue-fields, mcp
issue field %q cannot specify both value and field_option_na	validation	error	go, validation, issue-fields, mcp
issue field %q must specify either value or field_option_nam	validation	error	go, validation, issue-fields, mcp
failed to query issue fields metadata: %w	exception	error	go, graphql, issue-fields, auth, rate-limit
issue field %q was not found in %s/%s	validation	error	go, graphql, issue-fields, validation
issue field %q is missing fullDatabaseId	exception	error	go, graphql, issue-fields, schema-drift
issue field %q is %q, so field_option_name cannot be used	validation	error	go, graphql, issue-fields, validation
issue field option %q was not found for field %q	validation	error	go, graphql, issue-fields, validation
failed to fetch existing issue field values: %w	exception	error	go, graphql, issue-fields, rate-limit
failed to get repo access cache: %w	exception	error	go, lockdown-mode, auth, configuration
failed to get issue: %w	exception	error	go, github-api, auth, rate-limit, network
failed to read response body: %w	exception	error	network, http, response-body, issues
failed to get issue comments: %w	exception	error	api, auth, network, issues, comments
lockdown cache is not configured	exception	error	config, lockdown, internal, fail-fast
failed to marshal response: %w	exception	warning	serialization, json, sub-issues, unreachable
invalid issue URL %q: %w	validation	error	validation, url-parsing, comments, issues
duplicate_of must be provided when state_reason is 'duplicat	validation	error	validation, issues, duplicate, update-issue
each field_filters entry must be an object	validation	error	validation, field-filters, issues, input-shape
field_filters must be an array	validation	error	validation, field-filters, issues, input-shape
field_filters entry: %s	validation	error	validation, field-filters, required-param, issues
field_filters entry %q: %s	validation	error	validation, field-filters, required-param, issues
field_filters: unknown field %q. Known fields: %s	validation	error	validation, field-filters, issues, unknown-field
field_filters: %q is not a valid option for %q. Valid option	validation	error	validation, field-filters, single-select, issues
field_filters: %q is not a valid date for %q (expected YYYY-	validation	error	validation, field-filters, date, issues
field_filters: %q is not a valid number for %q: %s	validation	error	validation, field-filters, number, issues
field_filters: field %q has unsupported data_type %q	validation	error	validation, field-filters, unsupported-type, issues
empty timestamp	validation	error	validation, timestamp, issues, empty-value
invalid ISO 8601 timestamp: %s (supported formats: YYYY-MM-D	validation	error	validation, timestamp, iso8601, issues
failed to get GitHub client: %w	exception	error	auth, configuration, graphql-client, labels
failed to marshal label: %w	exception	info	json, serialization, labels, defensive
failed to marshal labels: %w	exception	info	json, serialization, labels, defensive
label '%s' not found in %s/%s	validation	error	labels, not-found, case-sensitivity, graphql
lockdown cache is not configured	exception	critical	lockdown, configuration, security, fail-closed, server-setup
invalid detail %q: must be one of "none", "stats", "full_pat	validation	error	validation, enum, commits, mcp-tool, argument-parsing
parameter %s is not of type %T, is %T	validation	error	validation, type-mismatch, argument-parsing, json, mcp-tool
parameter %s is not of type string or null, is %T	validation	error	validation, type-mismatch, nullable, argument-parsing, mcp-tool
parameter %s must not be empty	validation	error	validation, empty-string, nullable, argument-parsing, mcp-tool
invalid numeric value: %s	validation	error	validation, numeric, string-parsing, argument-parsing, mcp-tool
expected number, got %T	validation	error	validation, type-mismatch, numeric, argument-parsing, mcp-tool
non-finite numeric value	validation	error	validation, numeric, non-finite, argument-parsing, mcp-tool
non-integer numeric value: %v	validation	error	validation, numeric, fractional, argument-parsing, mcp-tool
numeric value out of int range: %v	validation	error	validation, numeric, overflow, argument-parsing, mcp-tool
numeric value %v is too large to fit in int64	validation	error	validation, numeric, precision-loss, bigint, json
missing required parameter: %s	validation	error	validation, missing-parameter, argument-parsing, mcp-tool
parameter %s is not of type %T	validation	error	validation, type-mismatch, argument-parsing, mcp-tool
parameter %s is not a valid number: %w	validation	error	validation, numeric, argument-parsing, wrapped-error, mcp-tool
parameter %s is not of type string, is %T	validation	error	go, mcp, type-assertion, arrays, parameter-validation
parameter %s could not be coerced to []string, is %T	validation	error	go, mcp, arrays, shape-mismatch, parameter-validation
failed to convert element %d (%s) to int64: %w	validation	error	go, mcp, type-conversion, arrays, strconv
failed to convert string %s to int64: %w	validation	error	go, strconv, type-conversion, parameter-validation
parameter %s: failed to convert element %d (%s) to int64: %w	validation	error	go, mcp, arrays, strconv, type-conversion
parameter %s could not be coerced to []int64, is %T	validation	error	go, mcp, arrays, shape-mismatch, parameter-validation
perPage value %d exceeds maximum of 100	validation	error	go, github-api, graphql, pagination, validation
perPage value %d cannot be negative	validation	error	go, github-api, graphql, pagination, validation
failed to marshal response: %w	exception	info	go, json, internal, unreachable-in-practice
failed to read response body: %w	exception	warning	go, network, github-api, response-body, transient
failed to resolve project ID: %w	exception	error
invalid %s %q: must be YYYY-MM-DD format	validation	error
invalid layout %q: must be \"table\", \"board\", or \"roadma	validation	error
project field database ID %d was not found on project %s#%d	validation	error
project field %q is included more than once	validation	error	projects, validation, duplicates, graphql
`mutation_unconfirmed` mutation response did not include every item	exception	error	github-api, graphql, batch-mutation, ambiguous-state, retry
each item requires exactly one of node_id, item_id, or item_	validation	error	github-projects, batch, input-validation, items
each item must set exactly one of node_id, item_id, or item_	validation	error	github-projects, batch, input-validation, conflicting-input
node_id must be a non-empty string	validation	error	github-projects, batch, input-validation, type-mismatch, node-id
item_id: %w	validation	error	github-projects, batch, input-validation, type-mismatch, item-id
item_owner, item_repo, and issue_number must all be provided	validation	error	github-projects, batch, input-validation, issue-ref
missing %s	validation	error	github-projects, batch, input-validation, issue-ref, missing-key
%s must be a non-empty string	validation	error	github-projects, batch, input-validation, type-mismatch, issue-ref
%s must be a positive integer: %w	validation	error	github-projects, batch, input-validation, type-mismatch, issue-ref
%s exceeds the GraphQL Int maximum of %d	validation	error	github-projects, batch, input-validation, range, issue-ref
value must be greater than zero (got %d)	validation	error	github-projects, batch, input-validation, positive-int
updated_field must be an object	validation	error	github-projects, batch, input-validation, updated-field
updated_field.value is required	validation	error	github-projects, batch, input-validation, updated-field, missing-key
updated_field must set either id or name, not both	validation	error	github-projects, batch, input-validation, conflicting-input, updated-field
updated_field requires either id or name	validation	error	github-projects, batch, input-validation, missing-key, updated-field
updated_field.id: %w	validation	error	github-projects, batch, input-validation, type-mismatch, updated-field
updated_field.name must be a non-empty string	validation	error	github-projects, batch, input-validation, type-mismatch, updated-field
field %q is TEXT; value must be a string	validation	error	github-projects, batch, input-validation, type-mismatch, field-value
field %q is NUMBER; value must be a number	validation	error	github-projects, batch, input-validation, type-mismatch, field-value, number
field %q is DATE; value must be a YYYY-MM-DD string	validation	error
field %q is DATE; value %q is not in YYYY-MM-DD format: %w	validation	error
field %q is SINGLE_SELECT; value must be a non-empty string	validation	error
field %q is ITERATION; value must be a non-empty iteration I	validation	error
field %q has unsupported data type %q for update_project_ite	validation	error
project item %d: %w	exception	error
project item %d: response did not include a node id	exception	error
failed to list project fields: %w	exception	error
field name must not be empty	validation	error
failed to query project Issue Field metadata: %w	exception	error
failed to resolve project item for %s/%s#%d: %w	exception	error
project item ID %q is not an integer: %w	exception	error
update_project_item requires either item_id, or item_owner +	validation	error
resolved field %q has non-numeric ID %q; pass it via '%s' in	validation	error
failed to get repo access cache: %w	exception	error
failed to read response body: %w	exception	error
failed to marshal response: %w	exception	warning	go, json, mcp, serialization, defensive-code
lockdown cache is not configured	exception	error	go, mcp, lockdown-mode, configuration, feature-flags
failed to check lockdown mode: %w	exception	error	go, mcp, lockdown-mode, graphql, authentication, network
failed to get GitHub client: %w	exception	error	go, github-api, mcp, authentication, configuration, ghes
failed to read response body: %w	exception	error	go, github-api, mcp, network, io, commits
failed to marshal response: %w	exception	warning	go, json, mcp, serialization, defensive-code
failed to get branch reference: %w	exception	error	github-mcp-server, go, git-refs, github-api
failed to list releases: %w	exception	error	go, github-api, http, rate-limit, releases
failed to get latest release: %w	exception	error	go, github-api, releases, http, not-found
failed to marshal starred repositories: %w	exception	error
after cursor is invalid	validation	error
path must not be empty	validation	error
path must be relative to the repository root (no leading '/'	validation	error
path must not contain '..' segments	validation	error
path must not contain control characters	validation	error
failed to get GitHub GraphQL client: %w	exception	error
failed to read file content: %w	exception	error	go, mcp, github-api, network, io, resource
failed to base64 encode content: %w	exception	info	go, base64, resource, dead-code
failed to close base64 encoder: %w	exception	info	go, base64, resource, dead-code
failed to read response body: %w	exception	error	go, mcp, network, io, resource, http
failed to fetch raw content: %s	http	error	go, mcp, github-api, auth, rate-limit, resource, http
failed to get GitHub client: %w	exception	error	go, mcp, auth, configuration, secret-scanning
failed to read response body: %w	exception	error	go, mcp, network, io, secret-scanning, http
failed to marshal alert: %w	exception	info	go, json, secret-scanning, dead-code
failed to marshal alerts: %w	exception	info	go, json, secret-scanning, dead-code
failed to get GitHub client: %w	exception	error	go, mcp, auth, configuration, security-advisory
failed to list global security advisories: %w	exception	error	go, mcp, github-api, rate-limit, security-advisory, validation
failed to read response body: %w	exception	error	go, mcp, network, io, security-advisory, http
failed to marshal advisories: %w	exception	info	go, json, security-advisory, dead-code
failed to list repository security advisories: %w	exception	error	go, mcp, github-api, not-found, rate-limit, security-advisory
failed to get advisory: %w	exception	error	github-api, network, security-advisory, mcp-tool
failed to marshal advisory: %w	exception	warning	json, serialization, security-advisory
failed to list organization repository security advisories:	exception	error	github-api, security-advisory, authorization, mcp-tool
missing required parameter: ref	validation	warning	mcp, protocol, validation
unsupported resource URI: %s	validation	info	mcp, resources, validation
unsupported ref type: %s	validation	info	mcp, protocol, type-guard
failed to get GitHub client: %w	exception	error	authentication, graphql, configuration
failed to marshal labels: %w	exception	warning	json, serialization, graphql
failed to create default API host: %w	exception	warning	configuration, oauth, url-parsing
failed to open log file: %w	exception	error	filesystem, configuration, logging
failed to parse API host: %w	exception	error	configuration, url-parsing
failed to classify API host: %w	exception	error	configuration, url-parsing
failed to create observability exporters: %w	exception	warning	observability, validation, configuration
failed to initialize tool scope map: %w	exception	error	tooling, validation, startup
failed to create OAuth handler: %w	exception	warning	oauth, configuration, startup
HTTP server error: %w	exception	critical	network, startup, configuration
failed to build inventory for tool scope map: %w	exception	critical	go, startup, inventory, host-type, configuration
unknown tools specified in WithTools: %s	http	error	go, inventory, validation, toolsets, configuration
failed to query viewer login: %w	exception	error	go, graphql, lockdown, authentication, network
viewer login returned empty	exception	error	go, graphql, lockdown, github-app, authentication
failed to query repository metadata: %w	exception	error	go, graphql, lockdown, github-api, not-found
failed to get user permission level: %w	exception	error	go, rest, lockdown, github-api, permissions
error creating file: %v	exception	error	go, filesystem, translations, containers, shutdown
error writing to file: %v	exception	error	go, filesystem, disk-full, translations
could not parse host as URL: %s	validation	error	go, configuration, url, validation, docker
host must have a scheme (http or https): %s	validation	error	go, configuration, ghes, url, host
host must use https to avoid sending credentials over cleart	validation	error	go, security, tls, ghes, configuration
%w: missing required Authorization header	validation	error	http, authentication, mcp, middleware, oauth
%w: Authorization header is badly formatted	validation	error	http, authentication, token, middleware, configuration
internal error	http	warning	go, oauth, html-template, http, client-disconnect
Forbidden: insufficient scopes	http	error	http, oauth, scopes, authorization, mcp
bad request: Authorization header is badly formatted	http	error	http, authentication, token, middleware, configuration
bad request: unsupported Authorization header	http	error	http, authentication, token, middleware, scheme
Unauthorized	http	error
failed to resolve authorization server URL: %v	http	error